SEO Tools
Image SEO Checker
Check image alt text, dimensions, responsive markup, and loading hints from page HTML. Filter findings and export a CSV report, with analysis on your device.
The page URL resolves relative image paths. Load page HTML makes a direct browser request without login cookies; many sites block it through CORS. If blocked, paste the page source or open a saved HTML file. No server proxy is used.
Up to 2 MB, 25,000 elements, and 1,000 images. HTML is parsed without running scripts, styles, or forms. Images are not requested during analysis. Click Analyze or use Ctrl/Cmd + Enter.
Leave blank for the full HTML, including logos and navigation. Use .entry-content, article, or a block class to focus on published content. Overlapping matches are counted once.
Ready. Paste HTML, open a file, or load a page URL.
Previews are optional direct requests to the image host. They send no referrer and do not verify indexing, HTTP status, file size, or the image chosen by a live page. A failed preview may reflect browser restrictions rather than a broken image.
Review image SEO on a WordPress page
Check the published page source after editing Media Library alt text or block settings. Existing Image blocks, theme templates, and page builders can keep their own image attributes. Updating a media attachment may not update every existing block or template.
What the report checks
Review missing sources and alt attributes, empty or generic alt text, dimensions, responsive candidates and picture sources, loading hints, and generic filenames. Each finding includes a suggested fix. Empty alt can be correct for decorative images; title, srcset, sizes, and loading are not universally required.
What needs a live page or human review?
This is a limited HTML audit, not an SEO score or accessibility certification. It cannot prove descriptive relevance, image availability, MIME type, compression, crawlability, layout stability, viewport position, or the actual LCP image. Do not lazy-load every image: important initially visible images generally should load eagerly.
The scan counts img elements in the selected HTML. CSS backgrounds, inline SVG, JavaScript-generated images, template contents, and noscript fallbacks are excluded. Saved source can contain admin-bar images; use a content selector to narrow the scan. Nothing is stored or published as an indexable scan result.
Reference guidance: Google image SEO, W3C decorative images, Image loading guidance.
