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Image Alt Text Checker & Generator — SEO + Accessibility
Paste your page HTML and get an instant audit of every image: missing alt, alt that is too short, and alt that is missing your keyword. Then generate alt-text ideas for each image.
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Image Alt Text Checker & Generator
SEO + Accessibility — alt text missing, length, keyword check
💡 Alt Text SEO Tips:
Aim for 5–15 words, include the keyword naturally, don't start with "image of", and use empty alt only for decorative images. Up to 20% of traffic comes from Google Images when alt text is done right — and it's essential for screen readers (accessibility).
How to audit image alt text (3 steps)
- Paste your page's HTML — the tool finds every
<img>tag and audits its alt attribute. - Fix what it flags: missing alt (content images must have it), alt that's too short to describe, and alt missing a keyword that belongs there.
- Use the idea generator — for each flagged image it suggests alt text you can adapt. Aim for 5–15 words that describe the image naturally.
FAQ
- What makes good alt text? A plain description of what the image shows, written for someone who can't see it. 5–15 words, keyword included naturally, no "image of…" prefixes.
- Do decorative images need alt? They should have
alt=""(empty) so screen readers skip them. "Missing alt" on a decorative image is fine to leave empty — but content images must be described. - Does alt text affect SEO? Yes — Google Images indexes alt text, and up to ~20% of a site's traffic can come from image search when it's done properly. It's also a core accessibility requirement.
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100% PrivateEverything runs in your browser. Your data never touches a server.
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Instant & FreeNo signup, no paywall, no limits. Fast on any device.
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Questions?Read our About page or contact us — we reply within 24 hours.