Hash / Checksum Tool
Generate cryptographic and non-cryptographic hashes of text using the Web Crypto API and a local CRC32 implementation.
Runs locally in your browser
Processed locally in your browser.
What is the Hash / Checksum Tool?
This tool computes SHA-256, SHA-384 and SHA-512 hashes of text or a local file using the browser’s Web Crypto API. It also shows a CRC32 checksum for text.
How to use it
- 1Enter text or choose a local file up to 25 MB.
- 2Read the computed hashes for each algorithm.
- 3Copy any digest.
How it works
SHA digests are produced by crypto.subtle.digest over the UTF-8 bytes of your input. CRC32 is computed with a standard lookup-table algorithm in JavaScript.
Limitations & notes
- Files are limited to 25 MB in this browser interface; CRC32 is available for text only.
- MD5 is intentionally omitted as it is broken for security use.
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