The AltTextLab Firefox Add-on helps you create high-quality, accessible image descriptions in just a few seconds.
Right-click on any image, choose “Generate Alt Text,” and the add-on will produce a smart, SEO-friendly description — powered by AI.
Installation
- Open Mozilla Add-ons in Firefox.
- Search for AltTextLab or follow the direct listing link.
- Click Add to Firefox → Add Extension.
- Once installed, open the add-on menu (puzzle icon in the toolbar).
- Find Alt Text Lab → Options.
- Paste your API key (you can generate it from your AltTextLab dashboard).
- Save your settings — done!
How to use
- Go to any page containing an image you’d like to describe.
- Right-click on it.
- Select “AltTextLab: Generate alt text.”
- Wait a moment — the description will appear in a popup or panel.
- Copy it to your clipboard and use it wherever you need (WordPress, Shopify, social media, etc.).
Customization options
You can personalize how the add-on behaves:
Language - Choose the output language for generated alt text.
AI writing style - Pick a tone such as “neutral,” “descriptive,” or “minimal.”
Use keywords from web page - AI will consider keywords from the page to generate more relevant descriptions.
Auto-copy to clipboard - Automatically copy the result after generation.
Troubleshooting & Common Issues
If you're having trouble using Firefox Add-on, check out these common issues and how to fix them:
