Calculate chunked local MD5 checksums for text or files, verify GNU/BSD manifests, and export compatible checksum files
MD5 is collision-broken and is only suitable for compatibility with a legacy checksum from a trusted source. Never use it for passwords, signatures, certificates, or adversarial file verification; use SHA-256 or stronger there.
Calculate chunked local MD5 checksums for text or files, verify GNU/BSD manifests, and export compatible checksum files. It requires no desktop installation and supports common developer workflows directly in a modern browser.
Core processing runs locally in your browser. Tool input is not uploaded; downloads and clipboard actions are handled by the browser.
Continue with the next step in the same workflow.
Calculate SHA-1 hashes for text, files, or HMAC workflows
Calculate SHA-256/384/512 hashes for text, files, or HMAC workflows
Encrypt text locally with AES-256-GCM, random salt and IV, authenticated metadata, and legacy-payload compatibility
Generate local HMAC test tokens, strictly validate JWT claims, and verify signatures with HMAC, PEM, JWK, or JWKS keys