On-device AI · Alt Text & Captions

Generate alt text for images on Mac

Write accessible descriptions for images, for websites, documents and social posts.

Runs on your MacBest with Apple Intelligence

Three steps. That's it.

  1. 1

    Drop your files

    Drag files onto Alt Text & Captions, choose them with Choose Files, or right-click them in Finder.

  2. 2

    Choose the options

    Set what you need in the options panel, such as alt text or social caption. Your choices are remembered for next time.

  3. 3

    Get the result

    The result lands in a new dated folder in Downloads › OneMacTools. Your originals are never changed.

What Alt Text & Captions does

Vision identifies what's in each image, who's in it and any text, and Apple Intelligence writes concise alt text or a social caption. Descriptions are saved to a CSV and can be embedded into copies of the images.

Uses Apple Intelligence on-device when it's on, and falls back to on-device text recognition when it's off.

Options

Alt text or social captionEmbed the description in image copies

Great for

  • Make a website accessible
  • Write captions for a batch of posts
  • Describe images in a report

Questions about Alt Text & Captions

Does Alt Text & Captions upload my files?

No. Alt Text & Captions runs entirely on your Mac, so your files never leave it and it works offline.

Will Alt Text & Captions change my original files?

No. Results are saved as new files in a dated folder in Downloads › OneMacTools, and your originals are left exactly as they were unless you turn on an option that says otherwise.

Does Alt Text & Captions need Apple Intelligence?

It uses Apple Intelligence's on-device model when it's turned on, for the best results. When it's off, OneMacTools falls back to on-device text recognition and rules, and tells you.

Alt Text & Captions, plus 88 more.
One app. One price.

All 89 tools for $29, once. 14-day money-back guarantee.