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FeuTex · free tools runs in-browser no bloat built by LiMiT

Free File Hash Tool

Generate a cryptographic hash for any file directly in your browser (no uploads). Choose SHA-1, SHA-256, SHA-384, or SHA-512, then copy the digest in hex or Base64.

Category: Developer · URL: /tools/free-file-hash-tool.html
Drag & drop a file here
Nothing is uploaded. Hashing happens locally in your browser.
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

This tool runs locally in your browser using the Web Crypto API.

  1. Select or drag-and-drop a file.
  2. Choose the hash algorithm and output format.
  3. Click Generate hash.
  4. Copy the digest and compare it with the expected checksum.
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Secondary intents covered: Verify a downloaded file matches a published checksum, Compare two files by hashing them and checking if digests match, Generate a SHA-256 checksum to share with others, Quickly hash a file on mobile without installing software, Produce a Base64 digest for APIs or logs, Confirm a file wasn’t modified after transfer, Hash a file locally without sending it to a server, Troubleshoot mismatched checksums by changing algorithms

FAQ

Is my file uploaded to a server?

No. The hash is computed locally in your browser and the file never leaves your device.

Which algorithms are supported?

This tool supports SHA-1, SHA-256, SHA-384, and SHA-512 via the Web Crypto API.

Why doesn’t it show MD5?

Most browsers don’t provide MD5 in the built-in Web Crypto API; if you need MD5 for text, use the related hash tool, or use a desktop tool for file MD5.

Hex vs Base64: which should I use?

Use hex for most published checksums; use Base64 when an API or system specifically asks for it.

My hash doesn’t match the published checksum—what can cause that?

Common causes are using the wrong algorithm (e.g., SHA-256 vs SHA-1), hashing a different file version, or a truncated/corrupted download.

Can I hash very large files?

Browser hashing loads the file into memory, so very large files may be slow or fail; for huge files, a native desktop hashing tool is more reliable.

How do I compare two files?

Hash each file with the same algorithm and compare the digests; identical digests strongly indicate identical file contents.