feat: epub bookmarks (#1337)

Co-authored-by: vedi0boy <nate@origin8publishing.com>
Co-authored-by: Uri Tauber <uritaube@gmail.com>

USER_GUIDE.md

@@ -35,6 +35,7 @@ Welcome to the **CrossPoint** firmware. This guide outlines the hardware control
     - [Supported Languages](#supported-languages)
   - [5. Reader Menu](#5-reader-menu)
     - [5.1 Chapter Selection](#51-chapter-selection)
+    - [5.2. Bookmarks](#52-bookmarks)
   - [6. Current Limitations \& Roadmap](#6-current-limitations--roadmap)
   - [7. Troubleshooting Issues \& Escaping Bootloop](#7-troubleshooting-issues--escaping-bootloop)
 
@@ -502,7 +503,17 @@ Accessible by selecting **Chapters** from the Reader Menu.
 
 ---
 
-## 6. Current Limitations & Roadmap
+### 5.2 Bookmarks
+
+Bookmarks can be created to quickly save and restore your place in a book.
+
+To create a bookmark, hold **Confirm** for 1 second while inside a book. A popup will appear letting you know a bookmark was created. The popup message will automatically disappear in a couple of seconds.
+
+To open bookmarks, press **Confirm** while inside a book. Then navigate to the **Bookmarks** menu. Bookmarks can be opened by navigating to them and pressing **Confirm**, which will redirect you to that place in the book. You can delete bookmarks by holding **Confirm** for 1 second, and then pressing **Confirm** again to confirm deletion, or **Back** to cancel.
+
+Bookmarks are stored in the `.crosspoint/bookmarks` folder in the JSON format.
+
+## 7. Current Limitations & Roadmap
 
 Please note that this firmware is currently in active development. The following features are **not yet supported** but are planned for future updates:
 
@@ -514,7 +525,7 @@ Please note that this firmware is currently in active development. The following
 
 ---
 
-## 7. Troubleshooting Issues & Escaping Bootloop
+## 8. Troubleshooting Issues & Escaping Bootloop
 
 If an issue or crash is encountered while using Crosspoint, feel free to raise an issue ticket and attach the logs.
 

lib/Epub/Epub/Section.cpp

@@ -329,6 +329,43 @@ std::unique_ptr<Page> Section::loadPageFromSectionFile() {
   return page;
 }
 
+std::string Section::getTextFromSectionFile() {
+  std::string fullText;
+  auto p = this->loadPageFromSectionFile();
+  if (p) {
+    for (const auto& el : p->elements) {
+      if (el->getTag() == TAG_PageLine) {
+        const auto& line = static_cast<const PageLine&>(*el);
+        if (line.getBlock()) {
+          const auto& words = line.getBlock()->getWords();
+          for (const auto& w : words) {
+            if (!fullText.empty()) fullText += " ";
+            fullText += w;
+          }
+        }
+      }
+    }
+  }
+  return fullText;
+}
+
+std::optional<uint16_t> Section::getCachedPageCount() const {
+  HalFile f;
+  if (!Storage.openFileForRead("SCT", filePath, f)) {
+    return std::nullopt;
+  }
+
+  const uint32_t fileSize = f.size();
+  if (fileSize < HEADER_SIZE) {
+    return std::nullopt;
+  }
+
+  f.seek(HEADER_SIZE - sizeof(uint32_t) * 4 - sizeof(uint16_t));
+  uint16_t count;
+  serialization::readPod(f, count);
+  return count;
+}
+
 std::optional<uint16_t> Section::getPageForAnchor(const std::string& anchor) const {
   HalFile f;
   if (!Storage.openFileForRead("SCT", filePath, f)) {

lib/Epub/Epub/Section.h

@@ -40,10 +40,14 @@ class Section {
                          uint8_t imageRendering, bool focusReadingEnabled,
                          const std::function<void()>& popupFn = nullptr);
   std::unique_ptr<Page> loadPageFromSectionFile();
+  std::string getTextFromSectionFile();
 
   // Look up the page number for an anchor id from the section cache file.
   std::optional<uint16_t> getPageForAnchor(const std::string& anchor) const;
 
+  // Get the page count from the section cache file without fully loading it.
+  std::optional<uint16_t> getCachedPageCount() const;
+
   // Look up the page number for a synthetic paragraph index from XPath p[N].
   std::optional<uint16_t> getPageForParagraphIndex(uint16_t pIndex) const;
 

lib/I18n/translations/english.yaml

@@ -182,6 +182,8 @@ STR_DOWNLOADING: "Downloading..."
 STR_DOWNLOAD_FAILED: "Download failed"
 STR_ERROR_MSG: "Error:"
 STR_UNNAMED: "Unnamed"
+STR_HOLD_CONFIRM_TO_DELETE: "Hold Confirm to Delete"
+STR_BOOKMARK_INSTRUCTIONS: "Hold Confirm from the reader to create a bookmark."
 STR_NO_SERVER_URL: "No server URL configured"
 STR_FETCH_FEED_FAILED: "Failed to fetch feed"
 STR_PARSE_FEED_FAILED: "Failed to parse feed"
@@ -259,6 +261,8 @@ STR_THEME_ROUNDEDRAFF: "RoundedRaff"
 STR_THEME_LYRA_EXTENDED: "Lyra Extended"
 STR_SUNLIGHT_FADING_FIX: "Sunlight Fading Fix"
 STR_REMAP_FRONT_BUTTONS: "Remap Front Buttons"
+STR_BOOKMARKS: "Bookmarks"
+STR_BOOKMARK_ADDED: "Bookmark added."
 STR_OPDS_BROWSER: "OPDS Browser"
 STR_SEARCH: "Search"
 STR_COVER_CUSTOM: "Cover + Custom"
@@ -288,6 +292,7 @@ STR_GO_HOME_BUTTON: "Go Home"
 STR_SYNC_PROGRESS: "Sync Progress"
 STR_DELETE_CACHE: "Delete Book Cache"
 STR_DELETE: "Delete"
+STR_CONFIRM_DELETE_BOOKMARK: "Delete this bookmark?"
 STR_DISPLAY_QR: "Show page as QR"
 STR_CHAPTER_PREFIX: "Chapter: "
 STR_PAGES_SEPARATOR: " pages  |  "

lib/KOReaderSync/ProgressMapper.cpp

@@ -1,5 +1,6 @@
 #include "ProgressMapper.h"
 
+#include <GfxRenderer.h>
 #include <Logging.h>
 
 #include <algorithm>
@@ -7,6 +8,7 @@
 #include <cstring>
 
 #include "ChapterXPathResolver.h"
+#include "Epub/Section.h"
 #include "Epub/htmlEntities.h"
 #include "Utf8.h"
 
@@ -506,8 +508,9 @@ bool streamSpine(const std::shared_ptr<Epub>& epub, int spineIndex, ParagraphStr
 }
 }  // namespace
 
-KOReaderPosition ProgressMapper::toKOReader(const std::shared_ptr<Epub>& epub, const CrossPointPosition& pos) {
-  KOReaderPosition result;
+SavedProgressPosition ProgressMapper::toSavedProgress(const std::shared_ptr<Epub>& epub,
+                                                      const CrossPointPosition& pos) {
+  SavedProgressPosition result;
   float intra =
       (pos.totalPages > 1) ? static_cast<float>(pos.pageNumber) / static_cast<float>(pos.totalPages - 1) : 0.0f;
   result.percentage = epub->calculateProgress(pos.spineIndex, intra);
@@ -520,13 +523,14 @@ KOReaderPosition ProgressMapper::toKOReader(const std::shared_ptr<Epub>& epub, c
   if (result.xpath.empty()) {
     result.xpath = generateXPath(epub, pos.spineIndex, intra);
   }
-  LOG_DBG("PM", "-> KO: spine=%d page=%d/%d %.2f%% %s", pos.spineIndex, pos.pageNumber, pos.totalPages,
+  LOG_DBG("PM", "-> Progress: spine=%d page=%d/%d %.2f%% %s", pos.spineIndex, pos.pageNumber, pos.totalPages,
           result.percentage * 100, result.xpath.c_str());
   return result;
 }
 
-CrossPointPosition ProgressMapper::toCrossPoint(const std::shared_ptr<Epub>& epub, const KOReaderPosition& koPos,
-                                                int currentSpineIndex, int totalPagesInCurrentSpine) {
+CrossPointPosition ProgressMapper::toCrossPoint(const std::shared_ptr<Epub>& epub, const SavedProgressPosition& koPos,
+                                                GfxRenderer& renderer, int currentSpineIndex,
+                                                int totalPagesInCurrentSpine, int fallbackTotalPages) {
   CrossPointPosition result{};
   const size_t bookSize = epub->getBookSize();
   if (bookSize == 0) return result;
@@ -556,7 +560,6 @@ CrossPointPosition ProgressMapper::toCrossPoint(const std::shared_ptr<Epub>& epu
       }
     }
   }
-  if (result.spineIndex >= spineCount) return result;
 
   const size_t prevCum = (result.spineIndex > 0) ? epub->getCumulativeSpineItemSize(result.spineIndex - 1) : 0;
   const size_t spineSize = epub->getCumulativeSpineItemSize(result.spineIndex) - prevCum;
@@ -570,7 +573,17 @@ CrossPointPosition ProgressMapper::toCrossPoint(const std::shared_ptr<Epub>& epu
       result.totalPages = std::max(
           1, static_cast<int>(totalPagesInCurrentSpine * static_cast<float>(spineSize) / static_cast<float>(cs)));
   }
-  if (spineSize == 0 || result.totalPages == 0) return result;
+
+  if (result.totalPages <= 0) {
+    Section tempSection(epub, result.spineIndex, renderer);
+    if (auto cachedCount = tempSection.getCachedPageCount()) {
+      result.totalPages = *cachedCount;
+    } else if (fallbackTotalPages > 0) {
+      result.totalPages = fallbackTotalPages;
+    } else {
+      result.totalPages = 1;  // Prevent division by zero and give a fallback
+    }
+  }
 
   float intra = 0.0f;
   if (useAncestry) {
@@ -613,8 +626,60 @@ CrossPointPosition ProgressMapper::toCrossPoint(const std::shared_ptr<Epub>& epu
 
   result.pageNumber = std::max(
       0, std::min(static_cast<int>(intra * static_cast<float>(result.totalPages - 1) + 0.5f), result.totalPages - 1));
-  LOG_DBG("PM", "<- KO: %.2f%% %s -> spine=%d page=%d/%d", koPos.percentage * 100, koPos.xpath.c_str(),
+  LOG_DBG("PM", "<- Progress: %.2f%% %s -> spine=%d page=%d/%d", koPos.percentage * 100, koPos.xpath.c_str(),
           result.spineIndex, result.pageNumber, result.totalPages);
+
+  // Refine page using section cache LUTs: li index, anchor, or paragraph index.
+  if (result.hasLiIndex || result.xpathAnchorId[0] != '\0' || result.hasParagraphIndex) {
+    Section tempSection(epub, result.spineIndex, renderer);
+    bool refined = false;
+    if (result.hasLiIndex) {
+      const auto liPage = tempSection.getPageForListItemIndex(result.liIndex);
+      if (liPage.has_value()) {
+        LOG_DBG("PM", "Li index %u -> page %d (was %d)", result.liIndex, *liPage, result.pageNumber);
+        result.pageNumber = *liPage;
+        refined = true;
+      } else {
+        LOG_DBG("PM", "Li index %u not found in section LUT", result.liIndex);
+      }
+    }
+    if (!refined && result.xpathAnchorId[0] != '\0') {
+      const auto anchorPage = tempSection.getPageForAnchor(std::string(result.xpathAnchorId));
+      if (anchorPage.has_value()) {
+        LOG_DBG("PM", "Anchor '%s' -> page %d (was %d)", result.xpathAnchorId, *anchorPage, result.pageNumber);
+        result.pageNumber = *anchorPage;
+        refined = true;
+      } else {
+        LOG_DBG("PM", "Anchor '%s' not found in section cache", result.xpathAnchorId);
+      }
+    }
+    if (!refined && result.hasParagraphIndex) {
+      const auto paragraphPage = tempSection.getPageForParagraphIndex(result.paragraphIndex);
+      const auto nextParagraphPage = tempSection.getPageForParagraphIndex(result.paragraphIndex + 1);
+      if (paragraphPage.has_value()) {
+        int refinedPage = std::max(result.pageNumber, static_cast<int>(*paragraphPage));
+        if (nextParagraphPage.has_value()) {
+          const int lutSpan = static_cast<int>(*nextParagraphPage) - static_cast<int>(*paragraphPage);
+          // Only cap when the LUT span is >1. A span of 1 means the LUT granularity is too
+          // coarse to trust over the intra-spine position (e.g. a stale cache where the paragraph
+          // occupies different pages than at build time).
+          if (lutSpan > 1 && refinedPage >= static_cast<int>(*nextParagraphPage)) {
+            refinedPage = static_cast<int>(*nextParagraphPage) - 1;
+          }
+        }
+        char nextParaBuf[8];
+        if (nextParagraphPage.has_value())
+          snprintf(nextParaBuf, sizeof(nextParaBuf), "%d", *nextParagraphPage);
+        else
+          snprintf(nextParaBuf, sizeof(nextParaBuf), "none");
+        LOG_DBG("PM", "Paragraph %u -> LUT page %d, nextPara page %s, intra page %d, using %d", result.paragraphIndex,
+                *paragraphPage, nextParaBuf, result.pageNumber, refinedPage);
+        result.pageNumber = refinedPage;
+      } else {
+        LOG_DBG("PM", "Paragraph %u not found in section LUT", result.paragraphIndex);
+      }
+    }
+  }
   return result;
 }
 

lib/KOReaderSync/ProgressMapper.h

@@ -1,5 +1,6 @@
 #pragma once
 #include <Epub.h>
+#include <GfxRenderer.h>
 
 #include <memory>
 #include <string>
@@ -19,18 +20,18 @@ struct CrossPointPosition {
 };
 
 /**
- * KOReader position representation.
+ * Progress position representation.
  */
-struct KOReaderPosition {
+struct SavedProgressPosition {
   std::string xpath;  // XPath-like progress string
   float percentage;   // Progress percentage (0.0 to 1.0)
 };
 
 /**
- * Maps between CrossPoint and KOReader position formats.
+ * Maps between CrossPoint and SavedProgress position formats, such as those used by KOReader.
  *
  * CrossPoint tracks position as (spineIndex, pageNumber).
- * KOReader uses XPath-like strings + percentage.
+ * SavedProgress uses XPath-like strings + percentage.
  *
  * Since CrossPoint discards HTML structure during parsing, we generate
  * synthetic XPath strings based on spine index, using percentage as the
@@ -39,28 +40,30 @@ struct KOReaderPosition {
 class ProgressMapper {
  public:
   /**
-   * Convert CrossPoint position to KOReader format.
+   * Convert CrossPoint position to SavedProgress format.
    *
    * @param epub The EPUB book
    * @param pos CrossPoint position
-   * @return KOReader position
+   * @return SavedProgress position
    */
-  static KOReaderPosition toKOReader(const std::shared_ptr<Epub>& epub, const CrossPointPosition& pos);
+  static SavedProgressPosition toSavedProgress(const std::shared_ptr<Epub>& epub, const CrossPointPosition& pos);
 
   /**
-   * Convert KOReader position to CrossPoint format.
+   * Convert SavedProgress position to CrossPoint format.
    *
    * Note: The returned pageNumber may be approximate since different
    * rendering settings produce different page counts.
    *
    * @param epub The EPUB book
-   * @param koPos KOReader position
+   * @param savedPos SavedProgress position
+   * @param renderer GfxRenderer for page count estimation
    * @param currentSpineIndex Index of the currently open spine item (for density estimation)
    * @param totalPagesInCurrentSpine Total pages in the current spine item (for density estimation)
    * @return CrossPoint position
    */
-  static CrossPointPosition toCrossPoint(const std::shared_ptr<Epub>& epub, const KOReaderPosition& koPos,
-                                         int currentSpineIndex = -1, int totalPagesInCurrentSpine = 0);
+  static CrossPointPosition toCrossPoint(const std::shared_ptr<Epub>& epub, const SavedProgressPosition& savedPos,
+                                         GfxRenderer& renderer, int currentSpineIndex = -1,
+                                         int totalPagesInCurrentSpine = 0, int fallbackTotalPages = 0);
 
  private:
   /**

src/BookmarkEntry.h

@@ -0,0 +1,14 @@
+#pragma once
+#include <cstdint>
+#include <string>
+
+// A single bookmark entry — a position in a book.
+struct BookmarkEntry {
+  std::string xpath;    // XPath-like progress string
+  std::string summary;  // First few words of a page to help identify it
+  float percentage;     // Progress percentage (0.0 to 1.0)
+
+  uint16_t computedSpineIndex = 0;        // Spine index at the time of bookmarking
+  uint16_t computedChapterPageCount = 0;  // Total page count of the chapter at the time of bookmarking
+  uint16_t computedChapterProgress = 0;   // Number of pages into the chapter at the time of bookmarking
+};

src/JsonSettingsIO.cpp

@@ -8,6 +8,7 @@
 #include <cstring>
 #include <string>
 
+#include "BookmarkEntry.h"
 #include "CrossPointSettings.h"
 #include "CrossPointState.h"
 #include "OpdsServerStore.h"
@@ -394,3 +395,44 @@ bool JsonSettingsIO::loadOpds(OpdsServerStore& store, const char* json, bool* ne
   LOG_DBG("OPS", "Loaded %zu OPDS servers from file", store.servers.size());
   return true;
 }
+
+// ---- Bookmarks ----
+
+bool JsonSettingsIO::saveBookmarks(const std::vector<BookmarkEntry>& bookmarks, const char* path) {
+  JsonDocument doc;
+  JsonArray arr = doc["bookmarks"].to<JsonArray>();
+  LOG_DBG("BKM", "Saving %zu bookmarks to file", bookmarks.size());
+  for (const auto& bookmark : bookmarks) {
+    JsonObject obj = arr.add<JsonObject>();
+    obj["xpath"] = bookmark.xpath;
+    obj["percentage"] = bookmark.percentage;
+    obj["summary"] = bookmark.summary;
+  }
+
+  String json;
+  serializeJson(doc, json);
+  return Storage.writeFile(path, json);
+}
+
+bool JsonSettingsIO::loadBookmarks(std::vector<BookmarkEntry>& bookmarks, const char* json) {
+  JsonDocument doc;
+  auto error = deserializeJson(doc, json);
+  if (error) {
+    LOG_ERR("BKM", "JSON parse error: %s", error.c_str());
+    return false;
+  }
+
+  JsonArray arr = doc["bookmarks"].as<JsonArray>();
+  bookmarks.clear();
+  bookmarks.reserve(arr.size());
+  for (JsonObject obj : arr) {
+    bookmarks.emplace_back();
+    auto& bookmark = bookmarks.back();
+    bookmark.xpath = obj["xpath"] | std::string("");
+    bookmark.percentage = obj["percentage"] | static_cast<float>(0);
+    bookmark.summary = obj["summary"] | std::string("");
+  }
+
+  LOG_DBG("BKM", "Loaded %zu bookmarks from file", bookmarks.size());
+  return true;
+}

src/JsonSettingsIO.h

@@ -1,10 +1,13 @@
 #pragma once
 
+#include <vector>
+
 class CrossPointSettings;
 class CrossPointState;
 class WifiCredentialStore;
 class RecentBooksStore;
 class OpdsServerStore;
+struct BookmarkEntry;
 
 namespace JsonSettingsIO {
 
@@ -28,4 +31,8 @@ bool loadRecentBooks(RecentBooksStore& store, const char* json);
 bool saveOpds(const OpdsServerStore& store, const char* path);
 bool loadOpds(OpdsServerStore& store, const char* json, bool* needsResave = nullptr);
 
+// Bookmarks
+bool saveBookmarks(const std::vector<BookmarkEntry>& bookmarks, const char* path);
+bool loadBookmarks(std::vector<BookmarkEntry>& bookmarks, const char* json);
+
 }  // namespace JsonSettingsIO

src/activities/ActivityResult.h

@@ -36,7 +36,7 @@ struct PageResult {
   uint32_t page = 0;
 };
 
-struct SyncResult {
+struct ProgressChangeResult {
   int spineIndex = 0;
   int page = 0;
 };
@@ -56,7 +56,7 @@ struct FilePathResult {
 };
 
 using ResultVariant = std::variant<std::monostate, WifiResult, KeyboardResult, MenuResult, ChapterResult, PercentResult,
-                                   PageResult, SyncResult, NetworkModeResult, FootnoteResult, FilePathResult>;
+                                   PageResult, ProgressChangeResult, NetworkModeResult, FootnoteResult, FilePathResult>;
 
 struct ActivityResult {
   bool isCancelled = false;

src/activities/reader/EpubReaderActivity.cpp

@@ -7,16 +7,20 @@
 #include <GfxRenderer.h>
 #include <HalStorage.h>
 #include <I18n.h>
+#include <JsonSettingsIO.h>
 #include <Logging.h>
 #include <Memory.h>
 #include <esp_system.h>
 
+#include <algorithm>
 #include <functional>
 #include <iterator>
 #include <limits>
 
+#include "BookmarkEntry.h"
 #include "CrossPointSettings.h"
 #include "CrossPointState.h"
+#include "EpubReaderBookmarksActivity.h"
 #include "EpubReaderChapterSelectionActivity.h"
 #include "EpubReaderFootnotesActivity.h"
 #include "EpubReaderPercentSelectionActivity.h"
@@ -30,6 +34,7 @@
 #include "RecentBooksStore.h"
 #include "components/UITheme.h"
 #include "fontIds.h"
+#include "util/BookmarkUtil.h"
 #include "util/ScreenshotUtil.h"
 
 namespace {
@@ -246,28 +251,48 @@ void EpubReaderActivity::loop() {
     }
   }
 
+  if (showBookmarkMessage && (millis() - bookmarkMessageTime) >= ReaderUtils::BOOKMARK_MESSAGE_DURATION_MS) {
+    showBookmarkMessage = false;
+    requestUpdate();
+  }
+
   // Enter reader menu activity.
   if (mappedInput.wasReleased(MappedInputManager::Button::Confirm)) {
-    const int currentPage = section ? section->currentPage + 1 : 0;
-    const int totalPages = section ? section->pageCount : 0;
-    float bookProgress = 0.0f;
-    if (epub->getBookSize() > 0 && section && section->pageCount > 0) {
-      const float chapterProgress = static_cast<float>(section->currentPage) / static_cast<float>(section->pageCount);
-      bookProgress = epub->calculateProgress(currentSpineIndex, chapterProgress) * 100.0f;
+    if (ignoreNextConfirmRelease) {
+      ignoreNextConfirmRelease = false;
+    } else {
+      const int currentPage = section ? section->currentPage + 1 : 0;
+      const int totalPages = section ? section->pageCount : 0;
+      float bookProgress = 0.0f;
+      if (epub->getBookSize() > 0 && section && section->pageCount > 0) {
+        const float chapterProgress = static_cast<float>(section->currentPage) / static_cast<float>(section->pageCount);
+        bookProgress = epub->calculateProgress(currentSpineIndex, chapterProgress) * 100.0f;
+      }
+      const int bookProgressPercent = clampPercent(static_cast<int>(bookProgress + 0.5f));
+      startActivityForResult(std::make_unique<EpubReaderMenuActivity>(
+                                 renderer, mappedInput, epub->getTitle(), currentPage, totalPages, bookProgressPercent,
+                                 SETTINGS.orientation, !currentPageFootnotes.empty()),
+                             [this](const ActivityResult& result) {
+                               // Always apply orientation change even if the menu was cancelled
+                               const auto& menu = std::get<MenuResult>(result.data);
+                               applyOrientation(menu.orientation);
+                               toggleAutoPageTurn(menu.pageTurnOption);
+                               if (!result.isCancelled) {
+                                 onReaderMenuConfirm(static_cast<EpubReaderMenuActivity::MenuAction>(menu.action));
+                               }
+                             });
+    }
+  }
+
+  if (mappedInput.isPressed(MappedInputManager::Button::Confirm) &&
+      mappedInput.getHeldTime() >= ReaderUtils::BOOKMARK_HOLD_MS) {
+    if (!showBookmarkMessage) {
+      addBookmark();
+      showBookmarkMessage = true;
+      ignoreNextConfirmRelease = true;  // Prevent accidental menu open after adding bookmark
+      bookmarkMessageTime = millis();
+      requestUpdate();
     }
-    const int bookProgressPercent = clampPercent(static_cast<int>(bookProgress + 0.5f));
-    startActivityForResult(std::make_unique<EpubReaderMenuActivity>(
-                               renderer, mappedInput, epub->getTitle(), currentPage, totalPages, bookProgressPercent,
-                               SETTINGS.orientation, !currentPageFootnotes.empty()),
-                           [this](const ActivityResult& result) {
-                             // Always apply orientation change even if the menu was cancelled
-                             const auto& menu = std::get<MenuResult>(result.data);
-                             applyOrientation(menu.orientation);
-                             toggleAutoPageTurn(menu.pageTurnOption);
-                             if (!result.isCancelled) {
-                               onReaderMenuConfirm(static_cast<EpubReaderMenuActivity::MenuAction>(menu.action));
-                             }
-                           });
   }
 
   // Long press BACK (1s+) goes to file selection
@@ -410,6 +435,18 @@ void EpubReaderActivity::jumpToPercent(int percent) {
 }
 
 void EpubReaderActivity::onReaderMenuConfirm(EpubReaderMenuActivity::MenuAction action) {
+  auto progressChangeResultHandler = [this](const ActivityResult& result) {
+    if (!result.isCancelled) {
+      const auto& sync = std::get<ProgressChangeResult>(result.data);
+      if (currentSpineIndex != sync.spineIndex || (section && section->currentPage != sync.page)) {
+        RenderLock lock(*this);
+        currentSpineIndex = sync.spineIndex;
+        nextPageNumber = sync.page;
+        section.reset();
+      }
+    }
+  };
+
   switch (action) {
     case EpubReaderMenuActivity::MenuAction::SELECT_CHAPTER: {
       const int spineIdx = currentSpineIndex;
@@ -463,26 +500,11 @@ void EpubReaderActivity::onReaderMenuConfirm(EpubReaderMenuActivity::MenuAction
     }
     case EpubReaderMenuActivity::MenuAction::DISPLAY_QR: {
       if (section && section->currentPage >= 0 && section->currentPage < section->pageCount) {
-        auto p = section->loadPageFromSectionFile();
-        if (p) {
-          std::string fullText;
-          for (const auto& el : p->elements) {
-            if (el->getTag() == TAG_PageLine) {
-              const auto& line = static_cast<const PageLine&>(*el);
-              if (line.getBlock()) {
-                const auto& words = line.getBlock()->getWords();
-                for (const auto& w : words) {
-                  if (!fullText.empty()) fullText += " ";
-                  fullText += w;
-                }
-              }
-            }
-          }
-          if (!fullText.empty()) {
-            startActivityForResult(std::make_unique<QrDisplayActivity>(renderer, mappedInput, fullText),
-                                   [this](const ActivityResult& result) {});
-            break;
-          }
+        std::string fullText = section->getTextFromSectionFile();
+        if (!fullText.empty()) {
+          startActivityForResult(std::make_unique<QrDisplayActivity>(renderer, mappedInput, fullText),
+                                 [this](const ActivityResult& result) {});
+          break;
         }
       }
       // If no text or page loading failed, just close menu
@@ -533,12 +555,8 @@ void EpubReaderActivity::onReaderMenuConfirm(EpubReaderMenuActivity::MenuAction
         }
 
         // Pre-compute local KO position and chapter name while Epub is still in RAM.
-        CrossPointPosition localPos = {currentSpineIndex, currentPage, totalPages};
-        if (paragraphIndex.has_value()) {
-          localPos.paragraphIndex = *paragraphIndex;
-          localPos.hasParagraphIndex = true;
-        }
-        KOReaderPosition localKoPos = ProgressMapper::toKOReader(epub, localPos);
+        CrossPointPosition localPos = getCurrentPosition();
+        SavedProgressPosition localKoPos = ProgressMapper::toSavedProgress(epub, localPos);
         const int tocIdx = epub->getTocIndexForSpineIndex(currentSpineIndex);
         std::string localChapterName = (tocIdx >= 0) ? epub->getTocItem(tocIdx).title : "";
         const std::string savedEpubPath = epub->getPath();
@@ -570,6 +588,12 @@ void EpubReaderActivity::onReaderMenuConfirm(EpubReaderMenuActivity::MenuAction
       }
       break;
     }
+    case EpubReaderMenuActivity::MenuAction::BOOKMARKS: {
+      startActivityForResult(
+          std::make_unique<EpubReaderBookmarksActivity>(renderer, mappedInput, epub, epub->getPath()),
+          progressChangeResultHandler);
+      break;
+    }
   }
 }
 
@@ -838,6 +862,10 @@ void EpubReaderActivity::render(RenderLock&& lock) {
     pendingScreenshot = false;
     ScreenshotUtil::takeScreenshot(renderer);
   }
+
+  if (showBookmarkMessage) {
+    GUI.drawPopup(renderer, tr(STR_BOOKMARK_ADDED));
+  }
 }
 
 void EpubReaderActivity::silentIndexNextChapterIfNeeded(const uint16_t viewportWidth, const uint16_t viewportHeight) {
@@ -1116,6 +1144,58 @@ void EpubReaderActivity::restoreSavedPosition() {
   requestUpdate();
 }
 
+void EpubReaderActivity::addBookmark() {
+  if (!section || !epub) {
+    return;
+  }
+  LOG_DBG("ERS", "Adding bookmark at spine %d, page %d", currentSpineIndex, section ? section->currentPage : -1);
+  int currentPage;
+  int pageCount;
+  {
+    RenderLock lock(*this);
+    pageCount = section->pageCount;
+    currentPage = section->currentPage;
+  }
+
+  std::string pageText;
+  if (currentPage >= 0 && currentPage < pageCount) {
+    pageText = section->getTextFromSectionFile();
+  }
+
+  SavedProgressPosition progress = ProgressMapper::toSavedProgress(epub, getCurrentPosition());
+
+  BookmarkEntry entry;
+  entry.percentage = progress.percentage;
+  entry.xpath = progress.xpath;
+  entry.summary = BookmarkUtil::sanitizeBookmarkSummary(pageText);
+
+  // Add bookmark
+  const std::string path = BookmarkUtil::getBookmarkPath(epub->getPath());
+  LOG_DBG("ERS", "Bookmark path: %s", path.c_str());
+  const std::string bookmarksDir = BookmarkUtil::getBookmarksDir();
+  Storage.mkdir(bookmarksDir.c_str());
+  std::vector<BookmarkEntry> bookmarks;
+  if (Storage.exists(path.c_str())) {
+    LOG_DBG("ERS", "Existing bookmark file found, loading bookmarks");
+    String json = Storage.readFile(path.c_str());
+    if (!json.isEmpty()) {
+      JsonSettingsIO::loadBookmarks(bookmarks, json.c_str());
+    }
+  } else {
+    LOG_DBG("ERS", "No existing bookmark file, starting with empty bookmark list");
+  }
+  bookmarks.insert(bookmarks.begin(), entry);
+  LOG_DBG("ERS", "Saving bookmark to file: %s", path.c_str());
+  const bool ok = JsonSettingsIO::saveBookmarks(bookmarks, path.c_str());
+  if (ok) {
+    showBookmarkMessage = true;
+  } else {
+    LOG_ERR("ERS", "Failed to save bookmark to: %s", path.c_str());
+  }
+
+  requestUpdate();
+}
+
 ScreenshotInfo EpubReaderActivity::getScreenshotInfo() const {
   ScreenshotInfo info;
   info.readerType = ScreenshotInfo::ReaderType::Epub;
@@ -1136,3 +1216,23 @@ ScreenshotInfo EpubReaderActivity::getScreenshotInfo() const {
   }
   return info;
 }
+
+CrossPointPosition EpubReaderActivity::getCurrentPosition() const {
+  const int currentPage = section ? section->currentPage : nextPageNumber;
+  const int totalPages = section ? section->pageCount : cachedChapterTotalPageCount;
+  std::optional<uint16_t> paragraphIndex;
+  if (section && currentPage >= 0 && currentPage < section->pageCount) {
+    const uint16_t paragraphPage =
+        currentPage > 0 ? static_cast<uint16_t>(currentPage - 1) : static_cast<uint16_t>(currentPage);
+    if (const auto pIdx = section->getParagraphIndexForPage(paragraphPage)) {
+      paragraphIndex = *pIdx;
+    }
+  }
+
+  CrossPointPosition localPos = {currentSpineIndex, currentPage, totalPages};
+  if (paragraphIndex.has_value()) {
+    localPos.paragraphIndex = *paragraphIndex;
+    localPos.hasParagraphIndex = true;
+  }
+  return localPos;
+}

src/activities/reader/EpubReaderActivity.h

@@ -6,6 +6,7 @@
 #include <optional>
 
 #include "EpubReaderMenuActivity.h"
+#include "ProgressMapper.h"
 #include "activities/Activity.h"
 
 class EpubReaderActivity final : public Activity {
@@ -31,9 +32,12 @@ class EpubReaderActivity final : public Activity {
   bool pendingSyncSaveError = false;
   bool skipNextButtonCheck = false;  // Skip button processing for one frame after subactivity exit
   bool automaticPageTurnActive = false;
+  bool showBookmarkMessage = false;
+  bool ignoreNextConfirmRelease = false;
   // Tracks whether this book is currently removed from Recent Books by the
   // removeReadBooksFromRecents feature (set at End-of-Book, cleared if paged back in).
   bool recentsEntryRemoved = false;
+  unsigned long bookmarkMessageTime = 0UL;
   // Set when the reader is left at end-of-book and SETTINGS.moveFinishedToReadFolder is on.
   // Consumed in onExit() to relocate the finished book into /Read/.
   bool pendingReadFolderMove = false;
@@ -59,6 +63,7 @@ class EpubReaderActivity final : public Activity {
   void applyOrientation(uint8_t orientation);
   void toggleAutoPageTurn(uint8_t selectedPageTurnOption);
   void pageTurn(bool isForwardTurn);
+  void addBookmark();
 
   // Footnote navigation
   void navigateToHref(const std::string& href, bool savePosition = false);
@@ -73,4 +78,5 @@ class EpubReaderActivity final : public Activity {
   void render(RenderLock&& lock) override;
   bool isReaderActivity() const override { return true; }
   ScreenshotInfo getScreenshotInfo() const override;
+  CrossPointPosition getCurrentPosition() const;
 };

src/activities/reader/EpubReaderBookmarksActivity.cpp

@@ -0,0 +1,224 @@
+#include "EpubReaderBookmarksActivity.h"
+
+#include <GfxRenderer.h>
+#include <HalStorage.h>
+#include <I18n.h>
+#include <JsonSettingsIO.h>
+#include <util/BookmarkUtil.h>
+
+#include <algorithm>
+
+#include "MappedInputManager.h"
+#include "ProgressMapper.h"
+#include "components/UITheme.h"
+#include "fontIds.h"
+
+namespace {
+constexpr int ENTER_DELETE_MODE_MS = 700;
+constexpr int DELETE_MODE_OFF = 0;
+constexpr int DELETE_MODE_DISPLAY = 1;
+constexpr int DELETE_MODE_CONFIRM = 2;
+
+// Layout constants used in renderScreen
+constexpr int LINE_HEIGHT = 60;
+}  // namespace
+
+void EpubReaderBookmarksActivity::onEnter() {
+  Activity::onEnter();
+
+  if (!epub) {
+    return;
+  }
+
+  const std::string path = BookmarkUtil::getBookmarkPath(epubPath);
+  if (Storage.exists(path.c_str())) {
+    String json = Storage.readFile(path.c_str());
+    if (json.isEmpty()) {
+      LOG_ERR("EPB", "Failed to load bookmarks from %s. Empty bookmark file", path.c_str());
+      bookmarks.clear();
+      bookmarks.shrink_to_fit();
+    } else {
+      JsonSettingsIO::loadBookmarks(bookmarks, json.c_str());
+
+      // pre-compute bookmark page values for quicker rendering
+      for (auto& bookmark : bookmarks) {
+        CrossPointPosition pos = ProgressMapper::toCrossPoint(epub, {bookmark.xpath, bookmark.percentage}, renderer);
+        bookmark.computedSpineIndex = pos.spineIndex;
+        bookmark.computedChapterPageCount = pos.totalPages;
+        bookmark.computedChapterProgress = pos.pageNumber;
+      }
+    }
+  } else {
+    LOG_DBG("EPB", "No bookmark file found at %s, starting with empty bookmarks", path.c_str());
+    bookmarks.clear();
+    bookmarks.shrink_to_fit();
+  }
+  LOG_DBG("EPB", "Loaded %d bookmarks for book: %s", static_cast<int>(bookmarks.size()), epubPath.c_str());
+
+  // Trigger first update
+  requestUpdate();
+}
+
+void EpubReaderBookmarksActivity::onExit() { Activity::onExit(); }
+
+int EpubReaderBookmarksActivity::getGutterBottom(const GfxRenderer& renderer) {
+  const auto orientation = renderer.getOrientation();
+  const bool isPortrait = orientation == GfxRenderer::Orientation::Portrait;
+  return isPortrait ? 75 : 40;  // Reserve vertical space for button hints at the bottom
+}
+
+int EpubReaderBookmarksActivity::getListHeight(const GfxRenderer& renderer) {
+  const auto pageHeight = renderer.getScreenHeight();
+  return pageHeight - getGutterBottom(renderer) - LINE_HEIGHT;  // Reserve vertical space for title and button hints
+}
+
+void EpubReaderBookmarksActivity::loop() {
+  // Delete confirmation mode
+  if (confirmingDelete >= DELETE_MODE_DISPLAY) {
+    if (mappedInput.wasReleased(MappedInputManager::Button::Confirm)) {
+      if (confirmingDelete == DELETE_MODE_DISPLAY) {
+        confirmingDelete = DELETE_MODE_CONFIRM;  // first confirmation, update text
+        requestUpdate();
+        return;
+      }
+      bookmarks.erase(bookmarks.begin() + selectorIndex);
+      const std::string path = BookmarkUtil::getBookmarkPath(epubPath);
+      Storage.mkdir(BookmarkUtil::getBookmarksDir().c_str());
+      if (!JsonSettingsIO::saveBookmarks(bookmarks, path.c_str())) {
+        LOG_ERR("EPB", "Failed to save bookmarks after delete");
+      }
+
+      // Move selector up if we deleted the last item
+      if (selectorIndex >= bookmarks.size() && selectorIndex > 0) {
+        selectorIndex--;
+      }
+
+      requestUpdate();
+      confirmingDelete = DELETE_MODE_OFF;
+      return;
+    } else if (mappedInput.wasReleased(MappedInputManager::Button::Back)) {
+      requestUpdate();
+      confirmingDelete = DELETE_MODE_OFF;
+      return;
+    }
+  }
+
+  if (mappedInput.wasReleased(MappedInputManager::Button::Confirm)) {  // Open
+    if (bookmarks.empty()) {
+      return;
+    }
+    auto bookmark = bookmarks.at(selectorIndex);
+    CrossPointPosition pos = ProgressMapper::toCrossPoint(epub, {bookmark.xpath, bookmark.percentage}, renderer);
+    setResult(ProgressChangeResult{pos.spineIndex, pos.pageNumber});
+    finish();
+    return;
+  } else if (mappedInput.wasReleased(MappedInputManager::Button::Back)) {
+    ActivityResult result;
+    result.isCancelled = true;
+    setResult(std::move(result));
+    finish();
+    return;
+  }
+
+  if (mappedInput.isPressed(MappedInputManager::Button::Confirm) && mappedInput.getHeldTime() > ENTER_DELETE_MODE_MS) {
+    if (bookmarks.empty()) {
+      return;
+    }
+    confirmingDelete = DELETE_MODE_DISPLAY;
+    requestUpdate();
+  }
+
+  buttonNavigator.onNextRelease([this] {
+    selectorIndex = ButtonNavigator::nextIndex(selectorIndex, bookmarks.size());
+    requestUpdate();
+  });
+
+  buttonNavigator.onPreviousRelease([this] {
+    selectorIndex = ButtonNavigator::previousIndex(selectorIndex, bookmarks.size());
+    requestUpdate();
+  });
+
+  buttonNavigator.onNextContinuous([this] {
+    selectorIndex = ButtonNavigator::nextPageIndex(selectorIndex, bookmarks.size(),
+                                                   GUI.getListPageItems(getListHeight(renderer), true));
+    requestUpdate();
+  });
+
+  buttonNavigator.onPreviousContinuous([this] {
+    selectorIndex = ButtonNavigator::previousPageIndex(selectorIndex, bookmarks.size(),
+                                                       GUI.getListPageItems(getListHeight(renderer), true));
+    requestUpdate();
+  });
+}
+
+void EpubReaderBookmarksActivity::render(RenderLock&&) {
+  renderer.clearScreen();
+
+  const auto pageWidth = renderer.getScreenWidth();
+  const auto pageHeight = renderer.getScreenHeight();
+  const auto orientation = renderer.getOrientation();
+  // Landscape orientation: reserve a horizontal gutter for button hints.
+  const bool isLandscapeCw = orientation == GfxRenderer::Orientation::LandscapeClockwise;
+  const bool isLandscapeCcw = orientation == GfxRenderer::Orientation::LandscapeCounterClockwise;
+  // Inverted portrait: reserve vertical space for hints at the top.
+  const bool isPortraitInverted = orientation == GfxRenderer::Orientation::PortraitInverted;
+  const bool isPortrait = orientation == GfxRenderer::Orientation::Portrait;
+  const int hintGutterWidth = (isLandscapeCw || isLandscapeCcw) ? 40 : 0;
+  // Landscape CW places hints on the left edge; CCW keeps them on the right.
+  const int contentX = isLandscapeCw ? hintGutterWidth : 0;
+  const int contentWidth = pageWidth - hintGutterWidth;
+  const int hintGutterHeight = isPortraitInverted ? 50 : 0;
+  const int hintGutterBottom = getGutterBottom(renderer);
+  const int contentY = hintGutterHeight;
+  const int listY = contentY + LINE_HEIGHT;  // Reserve vertical space for title
+  const int listHeight = getListHeight(renderer);
+  const int numBookmarks = bookmarks.size();
+
+  // Manual centering to honor content gutters.
+  const int titleX =
+      contentX + (contentWidth - renderer.getTextWidth(UI_12_FONT_ID, tr(STR_BOOKMARKS), EpdFontFamily::BOLD)) / 2;
+  renderer.drawText(UI_12_FONT_ID, titleX, 15 + contentY, tr(STR_BOOKMARKS), true, EpdFontFamily::BOLD);
+
+  const auto getBookmarkTitle = [this](int index) {
+    return bookmarks.at(confirmingDelete >= DELETE_MODE_DISPLAY ? selectorIndex : index).summary;
+  };
+  const auto getBookmarkSubtitle = [this](int index) {
+    auto bookmark = bookmarks.at(confirmingDelete >= DELETE_MODE_DISPLAY ? selectorIndex : index);
+    auto tocIndex = epub->getTocIndexForSpineIndex(bookmark.computedSpineIndex);
+    auto tocTitle = (tocIndex >= 0) ? (epub->getTocItem(tocIndex)).title : tr(STR_UNNAMED);
+    return std::to_string((int)bookmark.percentage) + "% - " + std::to_string(bookmark.computedChapterProgress) + "/" +
+           std::to_string(bookmark.computedChapterPageCount) + " - " + tocTitle;
+  };
+  const auto getBookmarkIcon = [isPortrait](int index) {
+    // only enabled icon in portrait mode due to limitation with rotating icons for other orientations
+    return isPortrait ? UIIcon::Bookmark : UIIcon::None;
+  };
+
+  if (numBookmarks > 0) {
+    if (confirmingDelete >= DELETE_MODE_DISPLAY) {
+      GUI.drawHelpText(renderer, Rect{0, pageHeight / 2 - LINE_HEIGHT * 2, contentWidth, LINE_HEIGHT},
+                       tr(STR_CONFIRM_DELETE_BOOKMARK));
+
+      // render list with just the selected item for the user to confirm to delete
+      GUI.drawList(renderer, Rect{contentX, pageHeight / 2, contentWidth, LINE_HEIGHT}, 1, 0, getBookmarkTitle,
+                   getBookmarkSubtitle, getBookmarkIcon);
+    } else {
+      GUI.drawList(renderer, Rect{contentX, listY, contentWidth, listHeight}, numBookmarks, selectorIndex,
+                   getBookmarkTitle, getBookmarkSubtitle, getBookmarkIcon);
+
+      GUI.drawHelpText(renderer, Rect{contentX, pageHeight - hintGutterBottom, contentWidth, LINE_HEIGHT},
+                       tr(STR_HOLD_CONFIRM_TO_DELETE));
+    }
+  } else {
+    GUI.drawHelpText(renderer, Rect{contentX, LINE_HEIGHT * 2, contentWidth, LINE_HEIGHT},
+                     tr(STR_BOOKMARK_INSTRUCTIONS));
+  }
+
+  const auto backLabel = confirmingDelete >= DELETE_MODE_DISPLAY ? tr(STR_CANCEL) : tr(STR_BACK);
+  const auto confirmLabel =
+      bookmarks.size() > 0 ? (confirmingDelete >= DELETE_MODE_DISPLAY ? tr(STR_DELETE) : tr(STR_OPEN)) : "";
+  const auto labels = mappedInput.mapLabels(backLabel, confirmLabel, tr(STR_DIR_UP), tr(STR_DIR_DOWN));
+  GUI.drawButtonHints(renderer, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
+
+  renderer.displayBuffer();
+}

src/activities/reader/EpubReaderBookmarksActivity.h

@@ -0,0 +1,33 @@
+#pragma once
+#include <Epub.h>
+
+#include <memory>
+
+#include "../../BookmarkEntry.h"
+#include "../Activity.h"
+#include "util/ButtonNavigator.h"
+
+class EpubReaderBookmarksActivity final : public Activity {
+  std::shared_ptr<Epub> epub;
+  std::string epubPath;
+  ButtonNavigator buttonNavigator;
+  int selectorIndex = 0;
+  std::vector<BookmarkEntry> bookmarks;
+  int confirmingDelete = 0;  // 0 = hide dialog, 1 = show dialog, 2 = allow confirmation to delete
+
+ public:
+  explicit EpubReaderBookmarksActivity(GfxRenderer& renderer, MappedInputManager& mappedInput,
+                                       const std::shared_ptr<Epub>& epub, const std::string& epubPath)
+      : Activity("EpubReaderBookmarks", renderer, mappedInput), epub(epub), epubPath(epubPath) {}
+  void onEnter() override;
+  void onExit() override;
+  void loop() override;
+  void render(RenderLock&&) override;
+
+ private:
+  // Calculate the vertical space to reserve for button hints based on orientation
+  int getGutterBottom(const GfxRenderer& renderer);
+
+  // Calculate the height available for the bookmark list based on orientation
+  int getListHeight(const GfxRenderer& renderer);
+};

src/activities/reader/EpubReaderMenuActivity.cpp

@@ -21,11 +21,12 @@ EpubReaderMenuActivity::EpubReaderMenuActivity(GfxRenderer& renderer, MappedInpu
 
 std::vector<EpubReaderMenuActivity::MenuItem> EpubReaderMenuActivity::buildMenuItems(bool hasFootnotes) {
   std::vector<MenuItem> items;
-  items.reserve(10);
+  items.reserve(11);
   items.push_back({MenuAction::SELECT_CHAPTER, StrId::STR_SELECT_CHAPTER});
   if (hasFootnotes) {
     items.push_back({MenuAction::FOOTNOTES, StrId::STR_FOOTNOTES});
   }
+  items.push_back({MenuAction::BOOKMARKS, StrId::STR_BOOKMARKS});
   items.push_back({MenuAction::ROTATE_SCREEN, StrId::STR_ORIENTATION});
   items.push_back({MenuAction::AUTO_PAGE_TURN, StrId::STR_AUTO_TURN_PAGES_PER_MIN});
   items.push_back({MenuAction::GO_TO_PERCENT, StrId::STR_GO_TO_PERCENT});

src/activities/reader/EpubReaderMenuActivity.h

@@ -17,6 +17,7 @@ class EpubReaderMenuActivity final : public Activity {
     GO_TO_PERCENT,
     AUTO_PAGE_TURN,
     ROTATE_SCREEN,
+    BOOKMARKS,
     SCREENSHOT,
     DISPLAY_QR,
     GO_HOME,

src/activities/reader/KOReaderSyncActivity.cpp

@@ -174,64 +174,10 @@ void KOReaderSyncActivity::performSync() {
     return;
   }
 
-  KOReaderPosition koPos = {remoteProgress.progress, remoteProgress.percentage};
-  remotePosition = ProgressMapper::toCrossPoint(epub, koPos, currentSpineIndex, totalPagesInSpine);
+  SavedProgressPosition koPos = {remoteProgress.progress, remoteProgress.percentage};
+  remotePosition = ProgressMapper::toCrossPoint(epub, koPos, renderer, currentSpineIndex, totalPagesInSpine);
 
-  // Refine page using section cache LUTs: li index, anchor, or paragraph index.
-  if (remotePosition.hasLiIndex || remotePosition.xpathAnchorId[0] != '\0' || remotePosition.hasParagraphIndex) {
-    Section tempSection(epub, remotePosition.spineIndex, renderer);
-    bool refined = false;
-    if (remotePosition.hasLiIndex) {
-      const auto liPage = tempSection.getPageForListItemIndex(remotePosition.liIndex);
-      if (liPage.has_value()) {
-        LOG_DBG("KOSync", "Li index %u -> page %d (was %d)", remotePosition.liIndex, *liPage,
-                remotePosition.pageNumber);
-        remotePosition.pageNumber = *liPage;
-        refined = true;
-      } else {
-        LOG_DBG("KOSync", "Li index %u not found in section LUT", remotePosition.liIndex);
-      }
-    }
-    if (!refined && remotePosition.xpathAnchorId[0] != '\0') {
-      const auto anchorPage = tempSection.getPageForAnchor(std::string(remotePosition.xpathAnchorId));
-      if (anchorPage.has_value()) {
-        LOG_DBG("KOSync", "Anchor '%s' -> page %d (was %d)", remotePosition.xpathAnchorId, *anchorPage,
-                remotePosition.pageNumber);
-        remotePosition.pageNumber = *anchorPage;
-        refined = true;
-      } else {
-        LOG_DBG("KOSync", "Anchor '%s' not found in section cache", remotePosition.xpathAnchorId);
-      }
-    }
-    if (!refined && remotePosition.hasParagraphIndex) {
-      const auto paragraphPage = tempSection.getPageForParagraphIndex(remotePosition.paragraphIndex);
-      const auto nextParagraphPage = tempSection.getPageForParagraphIndex(remotePosition.paragraphIndex + 1);
-      if (paragraphPage.has_value()) {
-        int refinedPage = std::max(remotePosition.pageNumber, static_cast<int>(*paragraphPage));
-        if (nextParagraphPage.has_value()) {
-          const int lutSpan = static_cast<int>(*nextParagraphPage) - static_cast<int>(*paragraphPage);
-          // Only cap when the LUT span is >1. A span of 1 means the LUT granularity is too
-          // coarse to trust over the intra-spine position (e.g. a stale cache where the paragraph
-          // occupies different pages than at build time).
-          if (lutSpan > 1 && refinedPage >= static_cast<int>(*nextParagraphPage)) {
-            refinedPage = static_cast<int>(*nextParagraphPage) - 1;
-          }
-        }
-        char nextParaBuf[8];
-        if (nextParagraphPage.has_value())
-          snprintf(nextParaBuf, sizeof(nextParaBuf), "%d", *nextParagraphPage);
-        else
-          snprintf(nextParaBuf, sizeof(nextParaBuf), "none");
-        LOG_DBG("KOSync", "Paragraph %u -> LUT page %d, nextPara page %s, intra page %d, using %d",
-                remotePosition.paragraphIndex, *paragraphPage, nextParaBuf, remotePosition.pageNumber, refinedPage);
-        remotePosition.pageNumber = refinedPage;
-      } else {
-        LOG_DBG("KOSync", "Paragraph %u not found in section LUT", remotePosition.paragraphIndex);
-      }
-    }
-  }
   // localProgress was pre-computed in EpubReaderActivity before the Epub was released.
-
   {
     RenderLock lock(*this);
     state = SHOWING_RESULT;

src/activities/reader/KOReaderSyncActivity.h

@@ -23,7 +23,7 @@ class KOReaderSyncActivity final : public Activity {
  public:
   explicit KOReaderSyncActivity(GfxRenderer& renderer, MappedInputManager& mappedInput, const std::string& epubPath,
                                 int currentSpineIndex, int currentPage, int totalPagesInSpine,
-                                KOReaderPosition localKoPos, std::string localChapterName,
+                                SavedProgressPosition localKoPos, std::string localChapterName,
                                 std::optional<uint16_t> currentParagraphIndex = std::nullopt)
       : Activity("KOReaderSync", renderer, mappedInput),
         epubPath(epubPath),
@@ -73,7 +73,7 @@ class KOReaderSyncActivity final : public Activity {
   CrossPointPosition remotePosition;
 
   // Local progress as KOReader format (pre-computed before Epub was released)
-  KOReaderPosition localProgress;
+  SavedProgressPosition localProgress;
 
   // Selection in result screen (0=Apply, 1=Upload)
   int selectedOption = 0;

src/activities/reader/ReaderUtils.h

@@ -11,6 +11,8 @@ namespace ReaderUtils {
 
 constexpr unsigned long GO_HOME_MS = 1000;
 constexpr unsigned long SKIP_HOLD_MS = 700;
+constexpr unsigned long BOOKMARK_HOLD_MS = 400;
+constexpr unsigned long BOOKMARK_MESSAGE_DURATION_MS = 2500;
 
 inline void applyOrientation(GfxRenderer& renderer, const uint8_t orientation) {
   switch (orientation) {

src/components/icons/bookmark.h

@@ -0,0 +1,12 @@
+#pragma once
+#include <cstdint>
+
+// size: 32x32
+static const uint8_t BookmarkIcon[] = {
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00,
+    0x03, 0x80, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x0F, 0x00,
+    0x00, 0x00, 0x1F, 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x1F, 0x00, 0x00, 0x00, 0x0F,
+    0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x01, 0xC0, 0x00, 0x00, 0x03, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};

src/components/themes/BaseTheme.cpp

@@ -228,6 +228,11 @@ void BaseTheme::drawSideButtonHints(const GfxRenderer& renderer, const char* top
   }
 }
 
+int BaseTheme::getListPageItems(int contentHeight, bool hasSubtitle) const {
+  int rowHeight = (hasSubtitle) ? BaseMetrics::values.listWithSubtitleRowHeight : BaseMetrics::values.listRowHeight;
+  return contentHeight / rowHeight;
+}
+
 void BaseTheme::drawList(const GfxRenderer& renderer, Rect rect, int itemCount, int selectedIndex,
                          const std::function<std::string(int index)>& rowTitle,
                          const std::function<std::string(int index)>& rowSubtitle,

src/components/themes/BaseTheme.h

@@ -97,7 +97,7 @@ struct ThemeMetrics {
   int textFieldLineEndOffset;
 };
 
-enum UIIcon { Folder, Text, Image, Book, File, Recent, Settings, Transfer, Library, Wifi, Hotspot };
+enum UIIcon { None = 0, Folder, Text, Image, Book, File, Recent, Settings, Transfer, Library, Wifi, Hotspot, Bookmark };
 
 enum class KeyboardKeyType { Normal, Shift, Mode, Space, Del, Ok, Disabled };
 
@@ -182,6 +182,7 @@ class BaseTheme {
   virtual void drawButtonHints(GfxRenderer& renderer, const char* btn1, const char* btn2, const char* btn3,
                                const char* btn4) const;
   virtual void drawSideButtonHints(const GfxRenderer& renderer, const char* topBtn, const char* bottomBtn) const;
+  virtual int getListPageItems(int contentHeight, bool hasSubtitle) const;
   virtual void drawList(const GfxRenderer& renderer, Rect rect, int itemCount, int selectedIndex,
                         const std::function<std::string(int index)>& rowTitle,
                         const std::function<std::string(int index)>& rowSubtitle = nullptr,

src/components/themes/lyra/LyraTheme.cpp

@@ -14,6 +14,7 @@
 #include "components/UITheme.h"
 #include "components/icons/book.h"
 #include "components/icons/book24.h"
+#include "components/icons/bookmark.h"
 #include "components/icons/cover.h"
 #include "components/icons/file24.h"
 #include "components/icons/folder.h"
@@ -73,6 +74,8 @@ const uint8_t* iconForName(UIIcon icon, int size) {
         return WifiIcon;
       case UIIcon::Hotspot:
         return HotspotIcon;
+      case UIIcon::Bookmark:
+        return BookmarkIcon;
       default:
         return nullptr;
     }
@@ -202,6 +205,11 @@ void LyraTheme::drawTabBar(const GfxRenderer& renderer, Rect rect, const std::ve
   renderer.drawLine(rect.x, rect.y + rect.height - 1, rect.x + rect.width - 1, rect.y + rect.height - 1, true);
 }
 
+int LyraTheme::getListPageItems(int contentHeight, bool hasSubtitle) const {
+  int rowHeight = (hasSubtitle) ? LyraMetrics::values.listWithSubtitleRowHeight : LyraMetrics::values.listRowHeight;
+  return contentHeight / rowHeight;
+}
+
 void LyraTheme::drawList(const GfxRenderer& renderer, Rect rect, int itemCount, int selectedIndex,
                          const std::function<std::string(int index)>& rowTitle,
                          const std::function<std::string(int index)>& rowSubtitle,

src/components/themes/lyra/LyraTheme.h

@@ -78,6 +78,7 @@ class LyraTheme : public BaseTheme {
                      const char* rightLabel = nullptr) const override;
   void drawTabBar(const GfxRenderer& renderer, Rect rect, const std::vector<TabInfo>& tabs,
                   bool selected) const override;
+  int getListPageItems(int contentHeight, bool hasSubtitle) const override;
   void drawList(const GfxRenderer& renderer, Rect rect, int itemCount, int selectedIndex,
                 const std::function<std::string(int index)>& rowTitle,
                 const std::function<std::string(int index)>& rowSubtitle,

src/util/BookmarkUtil.cpp

@@ -0,0 +1,35 @@
+#include "BookmarkUtil.h"
+
+#include <algorithm>
+#include <string>
+
+std::string BookmarkUtil::getBookmarksDir() { return "/.crosspoint/bookmarks/"; }
+
+std::string BookmarkUtil::getBookmarkPath(const std::string& bookPath) {
+  // remove leading slash and replace internal slashes to create a flat filename
+  std::string bookName = std::string(bookPath).erase(0, 1);
+  std::replace(bookName.begin(), bookName.end(), '/', '_');
+  std::replace(bookName.begin(), bookName.end(), '\\', '_');
+  const size_t lastDot = bookName.find_last_of('.');
+  if (lastDot != std::string::npos) {
+    bookName.erase(lastDot);
+  }
+  bookName += ".json";
+  return getBookmarksDir() + bookName;
+}
+
+std::string BookmarkUtil::sanitizeBookmarkSummary(std::string summary) {
+  summary.erase(
+      std::unique(summary.begin(), summary.end(), [](char a, char b) { return std::isspace(a) && std::isspace(b); }),
+      summary.end());
+  summary.erase(std::remove(summary.begin(), summary.end(), '\n'), summary.end());
+  summary.erase(summary.begin(),
+                std::find_if(summary.begin(), summary.end(), [](unsigned char ch) { return !std::isspace(ch); }));
+  summary.erase(
+      std::find_if(summary.rbegin(), summary.rend(), [](unsigned char ch) { return !std::isspace(ch); }).base(),
+      summary.end());
+  if (summary.size() > 72) {
+    summary.resize(72);
+  }
+  return summary;
+}

src/util/BookmarkUtil.h

@@ -0,0 +1,9 @@
+#pragma once
+#include <string>
+
+class BookmarkUtil {
+ public:
+  static std::string getBookmarksDir();
+  static std::string getBookmarkPath(const std::string& bookPath);
+  static std::string sanitizeBookmarkSummary(std::string summary);
+};