Hash text or files with MD5, SHA-1, SHA-256, SHA-384, SHA-512. HMAC signing, verify checksums. Client-side only.
- Hash text or files with MD5, SHA-1, SHA-256, SHA-384, SHA-512
- HMAC mode for signed payloads (e.g. webhooks)
- Verify checksums by comparing with a given hash
- All hashing in browser; nothing sent to server
- Copy hashes or download for integrity checks
Verify file checksums, generate hashes for APIs or passwords (e.g. for testing), or compute HMACs for webhook signatures. Fully client-side.
Try Hash Generator & HMAC at Spoold →
Spoold is a free developer toolbox that detects what you paste and opens the right tool.
- No sign-up – Use every tool without an account.
- Runs in your browser – Your data stays on your device; we don’t store or log your input.
- Paste and go – Paste JSON, HTML, JWT, curl, Base64, or any text on the homepage and Spoold suggests the right tool.
- One place for many tools – JSON formatter, JWT decoder, Base64, UUID generator, regex tester, curl-to-code, and more.