Alt Text Generator
Generate alt text for images with AI. Batch process 100+ images for accessibility compliance. Runs entirely in your browser.
Performance depends on your device. Modern laptops process images in 2–8 seconds; older devices may take longer.
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Accepts .JPG, .JPEG, .PNG, .WEBP · Up to 1,000 files
Alt text length
Frequently asked questions
Alt text (alternative text) is a short description attached to an image in HTML. Screen readers read it aloud for visually impaired users. Search engines also use it to understand image content. Good alt text describes what's in the image concisely — typically one sentence.
The European Accessibility Act (EAA), which took effect June 2025, requires businesses to make their digital products accessible — including providing alt text for meaningful images. In the US, the ADA has been interpreted to require web accessibility for public-facing businesses. Both standards follow WCAG 2.1 Level AA, which mandates alt text for all non-decorative images.
The AI produces accurate descriptions for most common image types: product photos, portraits, illustrations, and scenes. It struggles with text-heavy images (infographics, screenshots) and highly abstract art. Always review the output before publishing — the tool gives you a strong first draft, not a final answer.
Yes. AI-generated alt text is a starting point. Review each description to ensure it captures the intent of the image in your context. A product photo's alt text should include the product name and key attributes — the AI describes what it sees, but doesn't know your brand terms.
There is no hard limit. Drop as many images as you need. Processing happens one at a time — the page shows per-image progress. For 100 images, expect 5–20 minutes depending on your device. The CSV download is available as soon as any results are ready.
On a modern laptop: 2–8 seconds per image. On older hardware or mobile: 10–30 seconds. The AI model (~400 MB) downloads once on first visit and is cached locally — subsequent visits start immediately.
The CSV has two columns: filename and alt_text. You can open it in Excel, Google Sheets, or any spreadsheet app. The filename column matches your original filenames exactly, so you can join it with your CMS or asset library data.
Never. The AI model runs entirely in your browser. Your images are processed locally using WebAssembly — they never leave your device. ConvertYard's servers only deliver the page code and the AI model on first load.