How this tool works
Checks language | URL pairs locally.
The output is designed to make the next manual check clearer rather than turn SEO into a single score.
SEO & PERFORMANCE TOOL
Hreflang Pair Validator
Validate hreflang language-tag syntax, duplicate languages, URL format and optional x-default presence.
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
It cannot verify reciprocal return tags on remote pages. International targeting still requires correct content, canonicals and reciprocal annotations.
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