How do I generate a SHA-256 hash for a file?

Drop your file into the generator and it instantly computes SHA-1, SHA-256, SHA-384, SHA-512, and MD5 — entirely in your browser.

What is a file checksum used for?

Checksums verify file integrity: compare the hash before and after transfer to detect corruption or tampering.

Is the online file hash generator private?

Yes. Hashing is 100% client-side; your file never leaves your device.

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File Hash Generator

File Hash Generator — free online file tool, 100% client-side. No upload, no signup, no tracking. Private by design.

Drag & drop any file here

or click to select · any file type

Generate File Hashes & Checksums Online — Private

Generate cryptographic checksums for any file using the native Web Crypto API (SHA-1, SHA-256, SHA-384, SHA-512) plus a fast JS fallback MD5. Use these hashes to verify file integrity, detect tampering, or compare files.

What are checksums?

A checksum is a fixed-length string computed from the file's binary content using a cryptographic algorithm.
If even one byte changes, the checksum changes — perfect for integrity verification.
Common algorithms: SHA-256 is the industry standard for most file verification.

Frequently asked questions

What hash algorithms are supported?

SHA-1, SHA-256, SHA-384, SHA-512 (all from the native Web Crypto API) and MD5 via a fast JS fallback.

Is my file uploaded anywhere?

No. Hashing reads your file into memory locally. Your file never leaves your device.