Validador de UUID

Validate and inspect UUID/GUID formats and versions

100% gratuito. Funciona totalmente no seu navegador: seus arquivos e dados nunca saem do seu dispositivo e nada é enviado para nenhum servidor.

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Sobre esta ferramenta

Check whether a string is a correctly formatted UUID/GUID, and if valid, identifies which version it is (v1, v4, etc.) based on its structure. Useful for debugging data validation issues, or understanding what type of UUID a system generated.

Como usar esta ferramenta

  1. Paste UUID valueInput any ID string you want to validate against UUID rules.
  2. Run format validationCheck length, character set, hyphen placement, and variant bits.
  3. Inspect detected versionIdentify generation type (v1, v4, etc.) from encoded bits.
  4. Fix source system if invalidUpdate generators, schemas, or validators causing malformed IDs.

Por que usar

  • Quickly identifies malformed IDs before they break workflows.
  • Clarifies UUID version differences for engineering teams.
  • Useful in API validation and data ingestion debugging.
  • Reduces time spent tracing identifier-format errors.

Usos comuns

  • Debugging API requests failing UUID schema checks.
  • Validating imported database IDs during migration.
  • Verifying generated IDs in distributed systems.
  • Checking third-party payload conformance quickly.

Dicas para melhores resultados

  • Normalize casing and hyphen style in one canonical format.
  • Validate at input boundary before storage/use.
  • Use version-specific rules if business logic depends on generation type.
  • Log invalid UUID samples for upstream system fixes.

Erros a evitar

  • Assuming any 36-char string is valid UUID.
  • Ignoring variant/version bits in strict integrations.
  • Mixing UUID and non-UUID identifiers in same field silently.
  • Skipping validation on external API payloads.

Perguntas frequentes

It indicates how the UUID was generated - version 1 is based on timestamp and network info, version 4 is purely random, and other versions use different generation methods. The version is encoded directly in specific bits of the UUID itself.

Yes - the version just describes the generation METHOD, not a unique identifier itself; many different UUIDs can share the same version number while still being completely distinct values.

Wrong length, invalid characters, incorrect hyphen placement, or a version/variant bit pattern that doesn't match any recognized UUID standard - the validator checks the string against the formal UUID structure.

Yes. UUID Validator is free for normal use with no account required, and ToolBox does not add a watermark to your result.

Most tools in this category run in your browser so the file stays on your device. If a tool needs a temporary server job, files are handled for that job only and are not kept as a lasting archive.

No install needed. Open UUID Validator in your browser, add your file or paste your input, then download or copy the result.

Yes on modern mobile browsers. For large files, a desktop browser is usually faster and more reliable.

Try a different quality or format setting, use a smaller input, or open a related tool (for example compress before convert). Keep a copy of the original file before replacing it.

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