Browser extensions and open-source tools for Archive of Our Own (AO3) creators
Welcome to LazyCats! We are an open-source development group building browser extensions and tools designed to make creating, posting, and enjoying fanworks on Archive of Our Own (AO3) smoother and more accessible.
Disclaimer: LazyCats and its projects are unofficial community creations and are not affiliated with, endorsed by, or supported by the Organization for Transformative Works (OTW) or Archive of Our Own (AO3). Please do not direct questions or bug reports about these tools to AO3 support.
The AO3 Podfic Posting Helper streamlines your workflow when posting a podfic to Archive of Our Own by importing metadata—such as tags, ratings, relationships, characters, and work summaries—directly from the original text work into the AO3 new work form.

Chrome Web Store
Firefox Add-ons Store
Microsoft Edge Add-ons
Source & Releases
The extension supports custom templates for the title, summary, and work text fields:
Created and maintained by:
The AO3 Accessibility Helper is a lightweight, zero-permission Manifest V3 browser extension for Chrome, Firefox (Desktop & Android), and Microsoft Edge that checks your work HTML on Archive of Our Own for common accessibility barriers before you post.
When you open AO3’s Post New Work, Edit Work, Add Chapter, or Edit Chapter page, the extension embeds an AO3 Accessibility Check panel directly beneath the work text HTML editor. As you write or paste HTML, it highlights issues in real time and lets you jump directly to the offending line with a single click.

Chrome Web Store
Firefox Add-ons Store
Microsoft Edge Add-ons
Source & Releases
Because AO3 sanitizes HTML and strips custom aria-* attributes, all accessibility checks are tailored specifically to AO3’s permitted HTML subset:
<img> tags missing alt attributes or using suspicious placeholder/filename text.*** or ---) that screen readers read aloud awkwardly, encouraging semantic horizontal rules (<hr>).<h3> without an <h2>).<br><br> tags used instead of proper <p> paragraph tags, inaccessible <table> markup missing headers or captions, unlabeled <details> disclosure elements, and obsolete presentation tags (<center>, <font>, <strike>).permissions: []). Runs 100% locally in your browser—no drafts, text, or personal data ever leave your device.Have questions, suggestions, or want to get involved with LazyCats projects?