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Documentation Index

Fetch the complete documentation index at: https://www.alttextlab.com/docs/llms.txt

Use this file to discover all available pages before exploring further.

The AltTextLab browser extension lets you generate alt text for any publicly accessible image directly in your browser. Right-click an image, select AltTextLab: Get alt text, and the description appears in a popup within seconds.

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Supported browsers

Chrome

Install from the Chrome Web Store.

Firefox

Install from Mozilla Add-ons.

Edge

Install from the Microsoft Edge Add-ons store.

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How it works

  1. Right-click any image on a public webpage
  2. Select AltTextLab: Get alt text from the context menu
  3. The extension sends the image URL to the AltTextLab API
  4. A description appears in a popup — click to copy

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Requirements

  • An API key from the AltTextLab dashboard
  • The image must be publicly accessible (not behind a login or firewall)

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Troubleshooting

If you see an error message, see the Troubleshooting page for fixes for common issues.