No — hashing runs locally via the browser's built-in Web Crypto API (crypto.subtle). Nothing leaves your device.

File Hash Generator

Hash text or files with SHA-1, SHA-256, or SHA-512 directly in your browser. Nothing is uploaded.

By AbraCalc Editorial Team · Reviewed by AbraCalc Methodology Review · Last reviewed: 2026-06-25

Text input

…or choose a file

Algorithm

Pure browser JavaScript — uses the Web Crypto API (crypto.subtle).

Embed this tool on your site

<iframe src="https://abracalc.com/app/file-hash-generator/" width="100%" height="640" style="border:1px solid #e4e7ec;border-radius:12px" loading="lazy"></iframe>

How to use this tool

Paste text or choose a file.
Select the algorithm.
Click Hash to see the hex digest.

Hash text or files with SHA-1, SHA-256, or SHA-512 directly in your browser. Nothing is uploaded.

Frequently asked questions

Is my file uploaded?: No — hashing runs locally via the browser's built-in Web Crypto API (crypto.subtle). Nothing leaves your device.

References & sources

SHA-2 (Wikipedia)

File Hash Generator

How to use this tool

Frequently asked questions

References & sources

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