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Two privacy & security tools, side-by-side. See which fits your task.
Privacy & Security
Compute SHA1 checksum of a file. Drag-and-drop, no upload to server.
Open sha1 fileYour specific task is compute sha1 checksum of a file. Open the page, drop your input, get the result — typically under a second.
Your goal is hmac-sha1 signing — message + key, copyable output. Same approach: paste in, get the result, move on. No account, no upload.
Both tools live in the same category, so the choice depends on the exact subtask. sha1 file focuses on compute sha1 checksum of a file; sha1 HMAC focuses on hmac-sha1 signing — message + key, copyable output. Try whichever description matches your goal more closely — they're both free.
Yes — both tools are free for unlimited personal use. The Pro plan unlocks higher limits and batch features but the core functionality stays free forever.
Absolutely. Many users chain multiple tools together — process a file with one, then feed the result into another. Nothing is uploaded, so chaining is essentially instant.
No. Both sha1 file and sha1 HMAC work without signup. We only ask for an email if you decide to subscribe to a paid plan.