UUID Validator

Version Detector & Batch Processor

About UUID Validator

The most accurate, privacy-first, and developer-friendly UUID validation tool on the internet — completely client-side.

Built for engineers who refuse to trust flaky online validators, this tool enforces strict RFC 4122 compliance — checking not just the 8-4-4-4-12 pattern, but the variant field (89ab only) and correct version position. If a UUID passes here, it will work in PostgreSQL, Java, .NET, Go, Rust, and every standards-compliant system.

Whether you're debugging a distributed system at 3 a.m., auditing production logs before a migration, or scanning repositories for exposed credentials, this validator instantly finds malformed, legacy, or dangerous UUIDs — without ever sending your data anywhere.

All processing happens in your browser using optimized regular expressions and Set-based deduplication. No backend. No cookies. No analytics. No rate limits. Your UUIDs — even from classified or regulated environments — never leave your machine.

Supports single UUIDs, batch text input, and multiple file uploads (.txt, .csv, .json) up to 10,000 UUIDs per file and 10 files simultaneously. Export results instantly as clean TXT, CSV, or JSON — perfect for reports, CI pipelines, or documentation.

Trusted daily by backend engineers, database administrators, security teams, and DevOps professionals who demand accuracy and privacy above all else.

Validate once. Trust forever.

How to Use

1

Paste Any Text

Copy logs, JSON responses, config files, or database dumps directly into the text area. The tool automatically extracts every UUID — even if buried in quotes, timestamps, or nested objects.

2

Or Upload Files

Drag and drop up to 10 files (.txt, .csv, .json). The validator scans entire files in milliseconds, ignores layout, and deduplicates automatically.

3

Click Validate

One click triggers instant RFC 4122 validation. See a live preview of the first 10 results and full version breakdown.

4

Export Results

Download per-file or combined results as clean TXT, CSV, or JSON — ready for reports, tickets, or automation.

No accounts. No waiting. No data ever leaves your browser.

Frequently Asked Questions

Yes — 100%. Every byte is processed locally in your browser. No network requests, no cookies, no analytics, no server logs. Even if you're validating classified or regulated UUIDs, they never leave your device.

Because we enforce full RFC 4122 compliance: correct version position and variant field (89ab only). Many online tools use weak regex and accept invalid UUIDs (variant c–f). If it fails here, it will fail in real systems.

Yes! Save the page (Ctrl+S) or deploy it internally. It works completely offline with zero dependencies after the first load.

TXT: Human-readable, great for emails/tickets
CSV: Perfect for Excel, filtering, charting
JSON: Ideal for scripts, CI/CD, and programmatic use

No accounts, no rate limits, no quotas. Use as much as you want, forever — for free.

Still have questions? Read the blog or open an issue on GitHub.