accessibility · free Companion App · local in this browser
Alt Text Length Planner
Recommend alt text length and structure based on the image's job.
Privacy: This App does not send or save your entries. Do not enter passwords, codes, full account numbers, or private identifiers.
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Enter only the details needed for this task. Check them against the original source.
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Engine self-test
Running golden cases…
Source notes
- W3C Web Accessibility Initiative — An alt Decision Tree
Alt text length and content depend on the image purpose: decorative images get empty alt; informative images carry the purpose in a concise sentence; charts describe trend and key data.
Reviewed 2026-10-10. This tool gives length guidance; actual alt text must be written to the specific image.
What this App does not do
This gives guidance. It does not generate alt text or evaluate your writing.
This free App has no paid features. It does not contact an agency, employer, bank, seller, provider, or other person.