Check a document, presentation or spreadsheet against WCAG 2.1 Level AA and PDF/UA-1, fix most problems in one press, and export a tagged, accessible PDF that is validated before you get it.

61 accessibility checks. Every finding names the WCAG success criterion behind it, and where one applies, the Matterhorn Protocol condition too - so you can cite the standard, not just the tool.

✦ HOW IT WORKS
Open a Google Doc™, Google Slides™ deck or Google Sheet™, launch the add-on from the Extensions menu, and press Run check. You get a list of accessibility issues ranked by severity, each one explaining what a screen reader will do with it. Press Apply all fixes, or work through them one at a time. Then export a tagged PDF.

✦ WHAT IT CHECKS
— Alt text: missing image descriptions, filenames used as alt text, descriptions too long to be useful, charts, drawings, grouped shapes and video captions. AI writes a description for you, and every image is listed so you can mark any of them decorative.
— Headings: skipped heading levels, empty headings, duplicate headings, documents with no heading structure, and bold text that looks like a heading but was never styled as one.
— Tables: header rows, header columns, merged cells, blank header cells, ragged rows, nested tables, and tables used purely for layout.
— Color contrast: contrast ratios measured against the real background, including highlights, with a replacement color that keeps your hue.
— Links: "click here", "read more", bare URLs read out character by character, and the same link text pointing at two different destinations. Rewrites keep the sentence around the link intact.
— Reading order: slide elements announced in an order that does not match the layout, and text sitting outside a placeholder.
— Lists and equations: dashes and numbers typed by hand instead of a real list, and equations written out the way a person reads them aloud.
— Document basics: document title, document language, small text, justified text, sheet names, frozen header rows, hidden sheets holding data and cell notes.

✦ ONE ADD-ON FOR DOCS, SLIDES AND SHEETS
Most accessibility checkers make you install a separate add-on for each editor, or skip Google Sheets™ entirely. This one covers Google Docs™, Google Slides™ and Google Sheets™ in a single install, with checks written for each - reading order and title placeholders in Slides, frozen headers and merged cells in Sheets.

✦ TAGGED PDF EXPORT
File > Download > PDF produces a file with no structure at all: no headings, no table relationships, no alt text, no reading order. Everything you just fixed is lost at the moment of export.

Exporting from inside this add-on rebuilds the PDF properly. Headings become real heading elements, tables keep their header cells and scope, images keep their descriptions, and decorative images are marked as artifacts rather than left as empty figures. Every exported PDF is run through a PDF/UA validator and the result is shown to you, in plain language, including anything still outstanding.

Tagged PDF export is available for Google Docs™. Slides and Sheets are checked fully but not exported - Google produces no usable structure for either, and saying so is more useful than handing you a file that fails.

✦ PERFECT FOR
— Schools and districts: course packs, assignments, lecture slides, handouts and anything posted to a district website.
— Cities, counties and public agencies: board packets, agendas, minutes, public notices and citizen-facing documents that fall under ADA Title II compliance deadlines.
— Higher education: syllabi, course materials, and accessibility offices handling document remediation at scale.
— Accessibility teams: a11y specialists and digital accessibility coordinators auditing documents before publication, with findings that cite the standard instead of a generic warning.
— Nonprofits and healthcare: grant applications, program materials and patient-facing information.
— Business: HR policies, reports, proposals and pitch decks that need to be accessible to every employee and client.

✦ WHY THIS ADD-ON?
— It cannot see your other files. Most accessibility add-ons ask to see, edit and delete every document in your Google account. This one asks for current-file access only, so Google itself will not hand it any file except the one you opened it in. That is enforced by the platform, not promised in a policy - compare the permissions panel on this page with any other listing in this category.
— Most issues fix themselves. Heading levels, list structures, table markup, contrast, font sizes and titles are corrected outright. Alt text and link rewrites are written for you.
— It tells you when it is not sure. A low-confidence suggestion is shown and held back for your approval rather than written into your document silently.
— Findings cite the standard. WCAG success criteria and Matterhorn Protocol conditions, verified against the published protocol on every build.
— No overselling. Some conditions can only be judged by a person - whether a description is accurate, whether a table holds data or layout, whether color is the only thing carrying meaning. Those are surfaced for your decision rather than quietly passed.

✦ PRICING
Five checks free, no credit card required. A check that finds nothing costs you nothing, so a document that is already clean does not use one up.

$14.99 per month for unlimited checks after that. One price covers everything: unlimited accessibility checks across Docs, Slides and Sheets, every automatic fix, every AI-written description, and unlimited tagged PDF exports. One press of Run check pays for everything it produces - the findings, the fixes, and as many exports of that result as you need, with no second charge for acting on what you were shown. Confirming an individual fix with the refresh button on a card is free. Running a fresh check later, after editing the document, counts as another check. Manage or cancel your subscription at any time from inside the add-on.

✦ PRIVACY & DATA
The accessibility check runs entirely inside Google Workspace™. Your document is never uploaded.

Six tasks use a language model - writing an image description, rewriting link text, suggesting a document title, distinguishing duplicate headings, naming a slide, naming a sheet - and each sends only the fragment it needs. Nothing sent is stored, shared, or used for training. Exporting a tagged PDF sends the document to our service to be rendered, and the file is not kept afterwards. No data is shared with third parties. We comply with GDPR and the California Consumer Privacy Act (CCPA). Full details: https://www.fractalapps.dev/accessibility-checker-terms/

✦ TROUBLESHOOTING
If the sidebar appears blank or the menu does not load, try logging out of all Google accounts and signing back in with just the account you want to use. This is a known Google issue when multiple accounts are active.

If the add-on says it is missing a permission, it usually means one was declined during install. The panel gives you a link to grant it - approve it, then reload the document.

✦ SUPPORT
Questions or issues? Email us at support@FractalApps.dev and we will get back to you quickly.

Google Workspace™, Google Docs™, Google Slides™, Google Sheets™ and Google Drive™ are trademarks of Google LLC.