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Hreflang Cluster Builder

Generate reciprocal alternate tags from explicit localized URL mappings.

Work with your actual page data

No crawling, tracking, account access or uploads. Paste source/data or import a local UTF-8 file.

Does not translate pages or verify language, canonicals, HTTP responses or reciprocal deployment. Codes are syntactically checked with platform locale support. Maximum 1 million input characters in total and 5,000 data rows. Data is not saved between visits.

A smarter way to work with SEO & AEO

29 tools to audit, understand and improve your actual site evidence. URL crawling uses a local service after permission; source and export tools run in your browser.

AEO content

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Metadata & content

Meta Tag GeneratorBuild escaped canonical, robots, social and description tags with consistency checks.Browser-basedOpen toolMeta Description Drafting AssistantExtract page-based description candidates with keyword coverage and length feedback.Browser-basedOpen toolOpen Graph Preview BuilderGenerate Open Graph tags and inspect a safe local sharing preview.Browser-basedOpen toolSocial Card Tag BuilderBuild summary-card metadata with validated site handles and URLs.Browser-basedOpen toolKeyword & N-gram AnalyzerMeasure phrase frequency, headings and section coverage in copy or HTML.Browser-basedOpen toolSearch Snippet PreviewCompare title/description drafts in mobile and desktop snippet layouts.Browser-basedOpen tool

How to use Hreflang Cluster Builder

  1. Prepare the language to url mapping (json); use Load example to see the format.
  2. Run the analysis or builder. Review evidence, findings and stated limits.
  3. Copy the artifact or download the results; independently review before deploying SEO changes.

What this tool does

Accepts a JSON mapping of language/region codes to absolute URLs, validates codes and duplicate URLs, and outputs the full reciprocal tag block for every page, including x-default if supplied.

Supported files, limits & important details

Does not translate pages or verify language, canonicals, HTTP responses or reciprocal deployment. Codes are syntactically checked with platform locale support. Local processing only. Total input: 1 million characters, at most 5,000 rows. No data is uploaded or stored.

Input limits are enforced before processing. Clear removes your input and result from this page. This tool does not store your input between visits.

Keep your workflow moving

On-page SEO AuditInspect supplied HTML for indexability, metadata, headings and canonical conflicts.Browser-basedOpen toolRobots.txt Rule TesterExplain which supplied robots rule allows or blocks each URL.Browser-basedOpen toolSitemap ValidatorValidate sitemap XML, duplicate locations, host consistency and lastmod values.Browser-basedOpen tool

Questions about Hreflang Cluster Builder

How do I use Hreflang Cluster Builder?

Prepare the language to url mapping (json); use Load example to see the format. Run the analysis or builder. Review evidence, findings and stated limits. Copy the artifact or download the results; independently review before deploying SEO changes.

Are files or text uploaded when I use Hreflang Cluster Builder?

No. Hreflang Cluster Builder processes your input in your browser. The tool does not upload your document or text for processing. Keep your original and review the result.

What should I check before relying on Hreflang Cluster Builder?

Accepts a JSON mapping of language/region codes to absolute URLs, validates codes and duplicate URLs, and outputs the full reciprocal tag block for every page, including x-default if supplied.

Need help choosing a workflow? Read our practical PDF and file guides. How your data is handled.

Site audits

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AEO content

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Local SEO

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Metadata & content

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Crawl & indexing

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Structured data

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International SEO

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Migration & reports

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