Image SEO Analyzer
Audit alt text, file size, format, lazy-loading, and dimensions.
Image audit
Fetch a page, then inspect every <img> for SEO issues.
Start here · What is image SEO?
Image SEO makes images understandable, accessible, and fast. It covers alt text, filenames, compression, dimensions, loading behavior, and surrounding context.
Alt text is mainly for accessibility, but it also gives search engines context. Good alt text describes the image honestly and briefly.
Huge images can slow pages, which hurts users. The best image SEO balances meaning, quality, and performance.
When to use this tool
- Publishing visual content
Check product pages, tutorials, recipe posts, or portfolios where images carry important meaning.
- Speed cleanup
Find oversized files, missing dimensions, and lazy-loading issues that make pages feel slow.
- Accessibility review
Catch missing or vague alt text so screen reader users get the same core information.
Examples
Walk through these with the form above — they are practice scenarios, not live data.
Product page images
Try this
Analyze a product URL with gallery images.
What to look for
Look for descriptive alt text, compressed files, and dimensions that match the display size.
How-to article
Try this
Check a tutorial page with step-by-step screenshots.
What to look for
Important instructional images should have useful alt text; decorative images can use empty alt text.
Short tutorial
Follow in order the first time you use the tool; later you can skip to the step you need.
- Step 1 - Enter the page URL
Use a live page with images. Pages blocked by login or scripts may not expose every image.
- Step 2 - Review alt text and size
Fix missing meaningful alt text and large files first. Those usually matter most.
- Step 3 - Update source assets
Compress originals, rename files where useful, set dimensions, and rerun after deployment.
More detail
New here? Skim Start here first, then run one Examples scenario in the form above.
Image SEO Analyzer does one job: audit alt text, file size, format, lazy-loading, and dimensions. It lives under Technical SEO on SEOToolkits, where the beginner idea is simple: Technical SEO keeps pages crawlable, indexable, fast enough, and understandable to search engines.
FAQ
- Should every image have alt text?
- Every image needs an alt attribute, but decorative images can have empty alt text. Meaningful images need descriptive alt text.
- Do image filenames matter?
- They can help context a little, but clear alt text, nearby content, and fast files matter more.
- What image format is best for SEO?
- Use the format that keeps quality high and file size low. WebP or AVIF often work well for modern sites.
Related tools
Same workflow cluster on SEOToolkits — open another module without leaving context.