Seed Phrase Checker

Verify your BIP39 recovery phrase. Check wordlist validity, checksum, and compromise status. 100% private — analysis happens in your browser. Free, no wallet connection required.

100% Private No Account Needed Runs in Your Browser

⚠️ SECURITY NOTICE

Never share your seed phrase with anyone. This tool analyzes your phrase locally in your browser. Your seed phrase is never transmitted to any server. Still — only use on a trusted device.

About Seed Phrase Checker

🔐 BIP39 Validation

Checks your recovery phrase against the 2,048-word BIP39 English wordlist. Verifies word count (12 or 24) and checksum validity for accurate wallet security assessment.

🛡️ Compromise Scan

Cross-references your phrase hash against databases of known leaked seed phrases. Uses k-anonymity model so your full phrase never leaves your device.

📊 Security Report

Detailed report: wordlist validity, checksum verification, entropy estimation, and whether your phrase follows common patterns used by scammers and bad actors.

🔒 100% Local

All validation happens in your browser via JavaScript. Your seed phrase is never sent to any server, API, or third party. Full privacy guaranteed at all times.