Tools
Tools
Free checks for dated breaks and accessible PDFs. Each one says what it reads; most run in your browser and send nothing to us.
For developers
Find the dated changes that hit your code before they do.
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Check · Free, in your browser
Which Breakage Calendar dates hit your repository?
Choose a repository folder and see which dated changes its files touch, with the days left and the fix.
Covers the dates a file search can find. Nothing is uploaded.
Check a repository -
Check · Free, in your browser
Will your CI fail at setup on Ubuntu 26.04?
Finds the setup-python and setup-ruby steps that fail once ubuntu-latest runs Ubuntu 26.04.
Reads only workflow and version files. Nothing is uploaded.
Check a repository -
Check · Free, in your browser
Six places changed their time-zone rules in 2026. Does your browser know?
Six clocks show whether this browser is an hour off, and one command checks a server or container.
Nothing leaves the page.
Open the check
For public documents
See what a screen reader gets from a PDF.
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Check · Free, in your browser
What your PDF's tags give a screen reader
The reading order drawn on each page, headings, picture descriptions and visible words a screen reader skips.
Nothing is uploaded.
Check a PDF -
Connector · Free, for Claude
Public PDF accessibility check for Claude
Check a PDF on a public website for the structure screen readers use, and get a price estimate from our published Terms.
Checks PDFs already published on a public website.
Add it to Claude
Fixes for each dated break are under Guides.