AO3 Toybox

About

AO3 Toybox adds tag highlighting, work filtering, theming, and a better reading view on top of AO3.

Features
- Tag Highlighting: Give any tag a color so it stands out in listings, or fade and hide the ones you're tired of seeing. Hover a tag anywhere on AO3 and click the dot (or right-click the tag) to configure it on the spot; synonyms are matched automatically.
- Regex Tags: Match whole families of tags with one pattern, so you can highlight or hide every variant without chasing each spelling by hand.
- Work Hiding: Collapse or remove works by excluded tags, language, crossover count, word count, kudos/hits ratio, words per chapter, podfic, or how much of them you've already read. Each filter can be set to don't hide, collapse to a banner, or remove entirely, and a master switch shows everything again without losing your setup.
- Custom Theme: A full dark theme for AO3 in two families: classic accent colors with an OLED mode, or the complete Catppuccin palette in all four flavors — shown in a live preview as you tweak it. The popup and settings pages dress themselves to match.
- Work Listings: Shape what every work blurb shows: colored date badges, "Completed" labels, extra stats like kudos-per-hit, and tag cleanup.
- Reading Times: Reading-time and "finish at" stats on listings and above each chapter, driven by your reading speed (measure it with the built-in speed test). Finish times keep themselves current while you browse.
- Progress Bar: A reading progress bar on any screen edge, with configurable thickness, fill style, curated colors, chapter markers, an optional percent / time-remaining label, and click-to-jump — measuring the whole work or just the current chapter, previewed live in the settings.
- Reading History: Remembers which works you've visited and how far you got: chapter progress on work pages, visited/subscribed badges and fresh-chapter alerts in listings, an ignore button, and a "pick up where you left off" prompt that returns you to the exact paragraph.
- Reading Settings: A reader panel on every work page for font, size, width, line height, and paragraph spacing, plus a "standardize line breaks" option for works with stray empty lines between paragraphs.
- Quick Toggles: The toolbar popup gives you quick switches for the big features, perfect for turning all hiding off for a browse and back on afterwards. Theme, hiding, highlighting, and reading-stat changes apply to open AO3 tabs instantly — no reload needed.
- Import / Export: Back up your tags and settings, or move them to another browser, since everything lives locally.

Works on archiveofourown.org and its known mirrors/aliases