🖼️ Image Alt Text Checker
Audit alt text on all images. Find missing, empty, and generic alt attributes. View image sources, dimensions, and lazy loading status.
Check Image Alt Text
About the Image Alt Text Checker
This tool audits every <img> tag on a page and reports on alt text quality. It distinguishes between missing (no alt attribute), empty (alt=""), and generic (alt="image") alt text.
Alt Text Best Practices
- Every image needs an alt attribute — even if empty for decorative images
- Be descriptive — Describe what the image shows, not just what it is
- Include keywords naturally — Don't keyword-stuff, but include relevant terms
- Keep it concise — 125 characters or fewer is generally recommended
- Empty alt for decoration — Use alt="" for purely decorative images
- Add lazy loading — Use loading="lazy" for below-the-fold images
Frequently Asked Questions
Why is alt text important for SEO?
Alt text helps search engines understand image content, improves accessibility for visually impaired users, and appears when images fail to load. Images with descriptive alt text can also rank in Google Image Search.
What is generic alt text?
Generic alt text uses words like "image", "photo", "picture", or "logo" without describing the actual content. Search engines prefer specific, descriptive alt text that describes what the image shows.
Should decorative images have alt text?
Decorative images should use an empty alt attribute (alt="") rather than no alt attribute. This tells screen readers to skip the image. A missing alt attribute is different from an empty one — the former is an error, the latter is intentional.