Freedom251 › Accessibility Testing Software
tota11y
What tota11y is
tota11y is a free, open-source accessibility visualization toolkit for reviewing individual web pages. Add its bookmarklet to a browser bookmarks bar and activate it on a page; the instructions name Firefox, Chromium, and Safari. A Chromium extension is also linked. Modules cover contrast, image alternative text, focus order, headings, labels, empty elements, iframe titles, HTML landmarks, and explicitly set ARIA roles. The contrast checker considers text boldness and can ignore transparent or visually hidden text in specified cases. The image module asks whether alternative text accurately describes an image. Focus Order identifies naturally focusable elements and elements with tabindex, while warning that its predicted sequence is not guaranteed. It is intended for common accessibility errors, not a complete check. A Content Security Policy blocking scripts through script-src can stop the bookmarklet on some sites. The Babylon fork uses MIT, MPL-2.0, and Apache-2.0 licenses.
Who it suits
tota11y suits content creators, editors, and web teams reviewing accessibility on individual pages. It is useful when a browser bookmarklet or Chromium extension fits the workflow.
What it does well
- Free and open source
- Works through bookmarklet or Chromium extension
- Covers contrast, alt text, and focus order
- Includes headings, labels, landmarks, and ARIA checks
- Browser instructions name Firefox, Chromium, and Safari
What to know first
- Not designed to check every accessibility issue
- Content Security Policy can block the bookmarklet
- Focus Order’s guessed sequence is not guaranteed
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| tota11y | Open-source accessibility visualization toolkit | Free |
As github.com lists them, read 5 Oct 2026. The maker's own page has the final word.
Verdict
tota11y presents common accessibility findings in a form intended for content creators and editors. Its page-level modules are broad, but it should be treated as a visualization aid rather than a complete audit.
Facts from tota11y's own pages
- Alt text
- The image and alt module prompts users to check whether alt text is accurate rather than treating its presence as sufficient. · github.com, 5 Oct 2026
- Browser support
- The instructions name Firefox, Chromium, and Safari for the bookmarklet. · brucelawson.github.io, 5 Oct 2026
- Compatibility caveat
- The maker’s page reports that a company Content Security Policy blocking scripts through script-src prevented the bookmarklet from working on some sites. · brucelawson.co.uk, 5 Oct 2026
- Contrast checker
- The contrast checker calculates contrast with text boldness in mind and ignores transparent or visually hidden text in specified cases. · github.com, 5 Oct 2026
- Extension
- The instructions page links to a Chromium extension. · brucelawson.github.io, 5 Oct 2026
- Focus order
- The Focus Order plugin identifies naturally focusable elements and elements with tabindex, while warning that its guessed tab order is not guaranteed. · brucelawson.github.io, 5 Oct 2026
- Integrations
- The repository describes a community example integrating Tota11y into a webpack build for a React and TypeScript project. · github.com, 5 Oct 2026
- License
- The Babylon fork is licensed under MIT, MPL-2.0, and Apache-2.0. · github.com, 5 Oct 2026
- Limit
- The maker describes Tota11y as a visualization tool for common accessibility errors and says it is not designed to check everything. · brucelawson.co.uk, 5 Oct 2026
- Other checks
- Modules cover headings, labels, empty elements, iframe titles, HTML landmarks, and explicitly set ARIA roles. · github.com, 5 Oct 2026
- Purpose
- Tota11y visualizes widespread web accessibility errors in a way intended to be understandable to content creators and editors. · brucelawson.github.io, 5 Oct 2026
- Scan scope
- page · github.com, 21 Sept 2026
- Security
- The instructions page says version 1.2.0 added Black Duck security testing. · brucelawson.github.io, 5 Oct 2026
- Support
- The repository invites contributions and provides setup instructions using git clone and npm install. · github.com, 5 Oct 2026
- Use
- The site provides a bookmarklet that users can add to a browser bookmarks bar and activate to inspect a page. · brucelawson.github.io, 5 Oct 2026
Where tota11y stands on Freedom251
- Accessibility Testing Software#103 of 169
- Website Accessibility Tools#82 of 133