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Website Audit tool
Scan all images on a page for SEO best practices. Check alt text presence and quality, lazy loading attributes, image dimensions, modern format usage (WebP, AVIF), and oversized image detection.
What it checks
Audit images for alt text, lazy loading, and modern formats.
Review crawlable content, metadata, headings, links, and page structure.
Spot issues that make pages harder to read, navigate, or trust.
Translate raw diagnostics into fixes your team can prioritize.
Methodology
Next steps
Interpretation
Use cases
Catch issues before a new page, redesign, or migration goes live.
Validate technical signals before blaming content quality or backlinks.
Create a repeatable check before sending client deliverables.
Popular checks
Next paths
Use these pages when the result points to a broader check, a fix workflow, or a related technical question.
Fix workflows
Frequently asked questions
No. Enter a URL or domain and run the check in your browser. Some results can be partial if the target site blocks requests or hides the data being checked.
The Image SEO Checker runs live checks against the target website. Results reflect what was reachable at the time of the test, so retest after changing DNS, redirects, headers, or page content.
Alt text is important for accessibility and image understanding. Write concise descriptions that explain the image's purpose in context; do not stuff keywords into alt attributes.
Both are excellent modern formats. WebP has 95%+ browser support and offers 25-35% smaller files than JPEG. AVIF offers 50%+ savings but has lower browser support (~90%). Use WebP as default with AVIF as progressive enhancement.
Lazy loading below-the-fold images improves Core Web Vitals (especially LCP) and reduces initial page weight. Use loading='lazy' on images that aren't visible in the initial viewport. Never lazy-load the hero/LCP image.