New features

• Bulk-deletion history — every deletion run is now recorded locally. The popup has a dedicated History view (a button that opens a full list with a back button) showing each run by date, with per-run Download (CSV) and a Download last shortcut. History is device-local (never synced).
• Preview (dry-run) — a Preview button in the bulk-mode panel shows exactly which chats would be deleted before you confirm anything.
• Diagnostics — a Diagnose button (hidden by default; toggle in the popup) runs a non-destructive selector self-test and downloads a JSON report, so a Gemini UI change can be pinpointed quickly.
• Keyboard shortcuts — Enter toggles bulk mode, Ctrl/Cmd+A selects all, Esc exits bulk mode.
• More languages — the UI now also ships in Chinese (zh), Japanese (ja), Korean (ko), and Russian (ru), on top of English, Portuguese, Spanish, French, German, and Italian.

Improvements

• In-page dialogs replaced the native confirm()/prompt() boxes (which Firefox can suppress). Confirmation, Match Text, and duplicate-mode selection are now styled, localized in-page modals with a title preview.
• Safer deletion — the confirm step is fail-closed: if the extension can't positively identify the "Delete" button, it stops and records a failure instead of guessing (the old "click the last button" fallback is gone). A run also auto-stops after 3 consecutive failures.
• Selection survives re-renders — selection is now keyed by stable chat ID (not live DOM nodes), so Gemini re-rendering the sidebar no longer drops or corrupts your selection.
• Smarter auto-scroll — re-selecting "All" (or the same text/duplicate search) no longer re-scrolls. If you raise Number of auto-scrolls (e.g. 3 → 5), selecting "All" again performs just the extra scrolls.
• Performance — pinned-chat detection is cached, and checkbox/toggle-button updates are debounced (replacing a 1-second polling loop).
• Shadow-DOM isolation — modals and toasts are styled inside a shadow root, so Gemini's stylesheet can no longer leak into them.
• Cross-device counter, device-local everything else — only the deleted-chats counter syncs across your devices; settings and history stay on each device.

Bug fixes

• Fixed a hang: waitForElement referenced an undefined reject, so a missing element could freeze the whole bulk-delete loop instead of failing cleanly.
• Fixed inconsistent defaults for "Exclude pinned" and "Number of auto-scrolls" across files (they disagreed on first run).
• Fixed a lost-update race in the deleted-chats counter by serializing increments through the background worker (multiple tabs/scripts can no longer overwrite each other).
• Fixed a crash in non-browser contexts from an unguarded navigator.language.

Performance Improvements:
Lightning Fast Auto-Scroll: Drastically sped up the auto-scrolling engine! The script no longer waits for the browser's "smooth scrolling" animation (saving ~500ms per scroll).
Instant DOM Detection: Slashed the script's internal pause-time between chat loads from 100ms down to 10ms, making it fly through your history as fast as your connection allows.

Crucial Bug Fixes:
Bulletproof Deletions (Google UI Update Fix): Completely rewrote the core deletion engine! Google recently broke third-party scripts by altering their modal dialogs and ripple effects. The script is now 100% robust: it ignores fading menus, waits intelligently for pop-ups to mount, clicks elements reliably across all 50+ languages, and absolutely guarantees the chat is deleted before moving on.
Auto-Scroll Crash Fixed: Fixed an issue where selecting "All" for the very first time upon loading Gemini would silently fail and freeze the script.

What's New in v1.5:

Bulletproof Cloud Sync for Firefox: Completely re-engineered how the lifetime "Deleted Chats" counter is saved. The counter now flawlessly syncs across all your devices using Firefox Add-on Sync.

Update Migration Safety: Added a robust data migration system. When you update the extension from an older version, your existing deleted chats count will be automatically backed up, merged, and uploaded to the cloud without you losing a single digit of progress.

Local Storage Fallback: If you prefer to use Firefox without an account or with sync disabled, the extension now seamlessly falls back to local storage, ensuring your count remains intact and protected on your current device.

What's New in v1.4.0:

Universal Language Support: The deletion process has been completely re-engineered. Instead of relying solely on text translations, the extension now detects universal Google icons and UI structures. This guarantees flawless deletion support for every single language Gemini offers.

Bulletproof Pinned Chat Detection: We've upgraded how the extension detects your pinned conversations.

Auto-Opening Sidebar: If you have the sidebar closed when you start selecting chats, the extension will now automatically open it for you so you can see what you are deleting.

Smoother Auto-Scrolling: We updated the auto-scroll settings logic to be much more intuitive. You now select exactly how many "scrolls" you want the extension to perform (defaulting to 3), and you can even set it to 1 if you don't want it to scroll at all.

Version 1.3

What's New & Improved:
* Bulletproof Core Engine: Completely rebuilt our DOM selection engine to use semantic ARIA attributes. The extension is now highly resilient and practically immune to Google's future Gemini UI design updates!
* Sleeker Progress Tracking: I removed the cluttered scrolling log during bulk deletions and replaced it with a clean, dynamic single-line status that shows exactly what is happening in real-time.
* Seamless Typography: All injected buttons, text, and panels now use Gemini’s native typography ("Google Sans", "Inter", etc.) so they blend into the workspace flawlessly.
* Redesigned "Chime" Toggle: The "Chime when done" feature is now a sleek, pill-shaped toggle button that perfectly matches the Quick Select aesthetics.
* Flawless International Support: Upgraded the bottom action panel to use a dynamic Flexbox layout. This guarantees that translated text (like "Chats Selected" in Spanish or Portuguese) will never overlap or squish other buttons.
* Mobile Popup Polish: Significantly improved the spacing and scaled down the typography of the extension popup on mobile/tablet devices for a much more comfortable touch experience.
* Background Service Worker: Upgraded our background architecture to a persistent Manifest V3 Service Worker, ensuring your lifetime deletion stats sync perfectly and reliably across multiple tabs.

Version 1.2.0 — Release Notes

1. New Smart Quick-Select Filters
   • "Duplicates" Selector (Exact & Fuzzy): Since Gemini often titles chats slightly differently, this new smart tool lets you find:
   • Exact Match: Identical chat titles.
   • Smart/Fuzzy Match: Automatically clusters and selects chats that are on the same topic, share the same vocabulary, or use identical prompt prefixes.
     • "Match Text..." Selector: Type in any word or phrase to instantly select matching chat logs in your sidebar.
     • "Invert" Selector: Quickly reverse your selection to delete everything except the chats you manually kept unchecked!
     • "All" & "Clear All": Quickly toggle your entire loaded history.
2. Mobile Layout Redesign & Touch Targets
   • Enlarged tactile tap targets for custom buttons and checkboxes on mobile viewports.
   • Responsive fonts, wider button margins, and optimized list structures for comfortable finger-tapping action on the go.

What's new in Version 1.1:
- Performance & Timing Fixes: Implemented an active click-acknowledgement loop for modal confirm buttons. This guarantees the dialog closes instantly on click and prevents pop-ups from hanging on screen (especially on the last item).
- Enhanced Sidebar State Handling: Added a smart, low-overhead MutationObserver to ensure Bulk Delete checkboxes instantly attach when sidebars are opened or closed.
- Button Collisions Prevented: Refined the selector filters to explicitly ignore secondary actions (such as Share, Pin, Rename, or Archive buttons) across all supported languages.