Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Add-on icon

AO3 Filter version history - 4 versions

AO3 Filter by Harshal-R-Maru

Rated 5 out of 5
5 Stars out of 5
5
1
4
0
3
0
2
0
1
0
AO3 Filter version history - 4 versions
  • Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.

  • Latest version

    Version 3.1.0

    Released Aug 30, 2026 - 83.96 KB
    Works with firefox 109.0 and later, android 120.0 and later
    Major update with new filtering and quality-of-life features:

    Added dedicated Fandom filtering
    Added Pause/Resume filtering toggle
    Added Alt + Click quick tag/fandom blocking
    Added Kudos-to-Hits ratio badges
    Added search and Clear All controls in My Blocks
    Added Clipboard Import/Export
    Added Prompt for Reason toggle
    Added Edit Reason directly on blocked works
    Expanded Word Blacklist targets
    Improved mobile/custom skin support
    Fixed filtering updates without requiring page reloads
    Export format updated to v3.1 with backward-compatible imports

    Source code released under MIT License

    Download Firefox and get the extension
    Download file
  • Older versions

    Version 2.4.0

    Released Aug 29, 2026 - 62.38 KB
    Works with firefox 109.0 and later, android 120.0 and later
    v2.4.0

    A major update with new ways to manage blocked works, more control over why content is blocked, and several quality-of-life improvements.

    Highlights

    • Collapse Mode — Choose between completely hiding blocked works or replacing them with a compact placeholder.
    • Custom Block Reasons — Add your own reason when blocking content.
    • Word Blacklist — Block works containing specific words in titles, authors, or tags.
    • Copy CSS ID — Quickly copy a work's .work-XXXXXX CSS ID.
    • Word Count — Word count is now shown in work statistics.
    • Better Imports — Older v2.x exports are automatically converted to the latest format.

    What's New

    Collapse Mode

    You can now choose how blocked works are displayed.

    • Hide removes blocked works from the page entirely.
    • Collapse replaces them with a placeholder showing why the work was blocked.
    • Collapsed works can be individually shown or hidden using the Show button.
    • The setting is available from both the extension popup and AO3 navigation.

    Custom Block Reasons

    Blocking something can now include an optional reason.

    Reasons can be added when blocking:

    • Authors
    • Tags
    • Works
    • Languages
    • Words

    Reasons are limited to 500 characters and are shown on collapsed works and in My Blocks.

    The reason prompt also includes a character counter.

    Word Blacklist

    You can now block works based on specific words.

    Blocked words are checked against:

    • Author names
    • Work titles
    • Tags

    Matching is case-insensitive and uses whole words only, so blocking "cat" will not block "caterpillar".

    Blocked words can be managed from My Blocks, or added directly from AO3 using the new Block Word button.

    Copy CSS ID

    Every work blurb now has a Copy CSS ID button.

    Clicking it copies the work's CSS ID in the format:

    .work-123456

    This makes it easier to use work IDs in custom CSS.

    Updated Stats

    The work stats bar now includes word count.

    Improvements & Fixes

    • Improved compatibility with older exported settings.
    • v2.0 and v2.1 JSON exports are automatically converted to the current format when imported.
    • Improved handling of older block entries that stored authors as strings or did not have reason fields.
    • Improved wrapping of long words in block chips and collapse placeholders.
    • Improved mobile layout.
    • Fixed missing extension icon files.
    • Extension versioning is now aligned with the Firefox Add-ons release.

    Export Format

    The export format has been updated to v3.0.

    New exports include:

    • blockedWords
    • hideMode
    • Block reasons

    Import remains backward compatible with older v2.x exports, so existing settings can be imported without manually converting the file.

    Source code released under MIT License

    Download file
  • Version 2.3.0

    Released Jul 24, 2026 - 55.72 KB
    Works with firefox 109.0 and later, android 120.0 and later
    Release Notes
    • Added icon for web extension
    • Fixes the export of wrong css on export function

    Source code released under MIT License

    Download file
  • Version 2.1.0

    Released Jul 1, 2026 - 371.47 KB
    Works with firefox 109.0 and later, android 120.0 and later

    Source code released under MIT License

    Download file
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.