Free International SEO Audit Tool
Paste one localized page's rendered HTML and check its language, hreflang, canonical, and fallback signals before international pages split their relevance across regions.
- Checks hreflang codes and duplicates
- Finds missing self-reference and x-default
- Compares canonical and page URLs
- Runs in your browser
Localized page markup
International SEO Audit
International SEO audit
Generated result
International SEO audit Alternate links found: 3 Canonical URL: https://example.com/ HTML lang: en No structural issues found in the pasted markup. This browser audit checks one rendered page. It cannot verify reciprocal return links, redirects, or whether Google selected the canonical.
Where this tool fits
How to use the international seo audit
International SEO audit: what to check
An international SEO audit checks the markup a crawler receives on one localized page: HTML language, hreflang alternates, self-reference, x-default, canonical, and URL consistency. Use the hreflang generator to create a complete set, then paste the rendered page here to review the signals before publishing them across the site.
What if your site has no hreflang tags?
If your site has no hreflang tags, first decide whether separate language or country URLs genuinely serve different searchers. Add a complete, reciprocal set only for those localized pages; do not use hreflang to compensate for untranslated content, redirects, missing canonicals, or pages that cannot be indexed.
Why self-reference and return links matter
Every localized page should list itself and its alternates. The other pages must return the same relationship, though a single-page browser audit cannot fetch them safely. Use this result as the first half of the check, then validate the complete set and its redirects in a crawl.
Canonical and hreflang work together
Each locale should normally have a self-referencing canonical and a complete hreflang set. A canonical from the French page to the English page tells search engines that the French URL is not the preferred page; that can erase the very international variant you want indexed. For a focused tag check, compare the result with the canonical URL checker.
International SEO Audit FAQ
Is the international SEO audit free?
Yes. The international SEO audit is free to use on Seobase with no signup required for the on-page international markup check.
Can I use the international SEO audit for SEO content?
Yes. The tool is built for search-focused workflows and pairs best with human review before publishing.
Does this audit crawl every country version?
No. It checks the rendered HTML you paste from one page. It cannot verify reciprocal return links, redirects, response status, or Google's selected canonical; use a crawl or Search Console after fixing the markup.
What should I do if my site has no hreflang tags?
Confirm that the site has separate language or country versions first. If it does, add reciprocal hreflang references, a self-reference, and an appropriate x-default where needed, then verify that every URL is canonical, indexable, and returns 200. If all visitors use one version, missing hreflang may not be a problem to solve.
Do international pages need hreflang tags?
They are useful when substantially similar pages target different languages or regions. They do not replace translated content, local relevance, correct canonicals, or pages that return 200 and can be indexed.
Should every localized page have a self-referencing canonical?
Usually yes. Point each locale at its own final URL, then use hreflang to describe the alternate set. Canonicalizing every locale to the English page can remove the other locales from consideration.
Related free tools
Paste your language/region URLs and get valid hreflang tags back, link elements for the <head>, plus an hreflang sitemap, with the x-default and return links Google requires.
Enter a page URL and get every image it references — img tags, responsive srcset variants and the Open Graph image — as a plain list of direct links.
Enter a site and get every icon it declares — favicon, apple-touch-icon, mask-icon and each declared size — as direct links you can open or save.
Related articles
Short answer: An international SEO audit checks whether each language or country version can be crawled, indexed, canonicalized, and matched to the right searcher. Start with representative URLs, then verify status codes, self-referencing canonicals, reciprocal hreflang, lang attributes, localized content, internal links, and sitemap coverage.
Finding the best open source seo tools lets you run technical audits, track keyword positions, and inspect backlinks without paying $200 per month for closed SaaS platforms. Self-hosted SEO software gives you full ownership of your crawl data, eliminates seat licenses, and avoids strict export quotas. By hosting tools on a local machine or a $5 VPS, engineering and marketing teams run deep scans directly against their own databases.
Short answer: Technical SEO makes a page reachable, crawlable, and understandable to search engines. On-page SEO makes the page the best answer for a searcher. Fix technical blockers first, then improve the page’s intent match, structure, and evidence. Doing more of one cannot compensate for a failure in the other.
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