How this tool works
Parses img elements from your pasted HTML.
The output is designed to make the next manual check clearer rather than turn SEO into a single score.
SEO & PERFORMANCE TOOL
Image SEO Markup Analyzer
Inspect pasted HTML for image alt attributes, explicit width and height, and lazy-loading usage.
Free to useNo account requiredTransparent limitations
Review the output
Enter your inputs, then update the result.
Your input is processed in this browser unless the tool says it uses an external API.
What the result does not prove
Empty alt text can be correct for decorative images. Image relevance, quality and crawlability require page-level review.
Search visibility depends on crawlability, relevance, content quality, competition, links and many other signals. No browser tool can guarantee rankings.
Good SEO practice
Does this tool guarantee higher rankings?
No. It identifies a narrow technical or content-planning issue. Use the result with real page context and Search Console data.
Does the tool send my text to a server?
Most tools run entirely in your browser. The Website Speed Test is the exception: it sends the public URL you enter to Google PageSpeed Insights.
Should I repeat keywords more often?
No. Write naturally, answer the searcher's task, use descriptive headings and internal links, and avoid forced repetition.
Related tools
Continue with the next specific check instead of relying on a single SEO score.
Technical SEO help