World Wide Web Consortium, Web Accessibility Initiative · reviewed 2026-10-26
What this source supports: PDF guidance includes text alternatives, logical structure, headings, keyboard order, and labeled form controls.
Source limit: Techniques support evaluation; they are not a complete certification by themselves. Test the actual document and format.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
Limits
This guide counts the figures you enter. It does not judge whether existing alt text is good or open the PDF.
Techniques support evaluation; they are not a complete certification by themselves. Test the actual document and format.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Common questions
What does the App compute?
Turn figure counts and writing minutes into an alt-text coverage share and the hours to close it.
What does the App not do?
This App counts the figures you enter. It does not judge existing alt text or open the PDF.
Where do the numbers come from?
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
Before you start
Open the linked source page and keep it beside you.
Gather the values the App asks for:
Meaningful figures.
Figures with usable alt text.
Minutes to write one.
Set aside ten quiet minutes; rushed numbers are the main error this guide prevents.
Free Companion App
The App computes the worked example with your own numbers, in your browser.
APP 1
PDF Figure Alt Coverage
Turn figure counts and writing minutes into an alt-text coverage share and the hours to close it.
The App runs in this browser. It does not send or save entries. Copy, download, or print only when you choose.
This guide uses short, direct instructions as an ASD-STE100-style writing target. It is not a formal certification.
About this guide
Category
Accessibility
Reading time
About 3 minutes
Last reviewed
Cost
Free to read. No account is required.
Companion App: PDF Figure Alt Coverage. It runs in this browser and does not upload your entries.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.