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SHA-1 Hash Generator

Compute SHA-1 digest of text or files in your browser using Web Crypto API. Useful for Git commit hashes and legacy systems.

Free No signup Client-side Privacy friendly

— %

Hashing…

How to use

  1. 1 Pick Text or File mode.
  2. 2 Type / paste text, or choose a file (≤ 50 MB).
  3. 3 Pick output encoding (hex or Base64).
  4. 4 Copy the digest.

Why use this tool

  • Uses native Web Crypto API.
  • Common in legacy systems — Git object IDs, older TLS, some integrity checks.
  • Output in hex (40 chars) or Base64 (28 chars).
  • Pure client-side.

Frequently asked questions

Is SHA-1 still safe?

No — SHA-1 has practical collision attacks (SHAttered, 2017). Do not use SHA-1 for digital signatures or any anti-tamper purpose. Use SHA-256 instead.

Why is SHA-1 still around?

Legacy compatibility — Git uses it for object IDs (with collision-detection patches), some older TLS deployments, and historical file checksums.

Does this work offline?

Yes — hashing runs entirely in your browser once the page loads.

Summary

SHA-1 Hash Generator is a free developer utility by Zerethon Tools. Compute SHA-1 digest of text or files in your browser using Web Crypto API. Useful for Git commit hashes and legacy systems. Runs entirely in the browser — no signup, no upload.

Category
Developer
Pricing
Free
Privacy
Browser-based
Signup
Not required

Privacy

Your data never leaves your browser unless explicitly stated. SHA-1 Hash Generator runs entirely client-side — no server upload, no logging, no tracking of your input.

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