Hash generator

What this tool does

hash-wasm computes digests from UTF-8 text or file bytes. Output is lowercase hex. ConvertPass does not salt passwords and does not implement bcrypt or Argon2.

How to use it

1. Paste text or choose a file.
2. Select algorithms.
3. Copy the JSON map of digests.

Privacy

This tool processes files and text locally in your browser. Your content is not uploaded or stored by this site.

ConvertPass does not include your input in analytics, URLs, or error reports. Encoding: UTF-8 for text, raw bytes for files. Limit: 25 MB (25.00 MB).

Limitations

• Not a password-hashing tool.
• MD5 and SHA-1 are broken for collision resistance.
• Hashing a file does not prove the file came from a trusted publisher unless you compare it to a digest obtained over a trusted channel.

Example

ConvertPass

{
  "SHA-256": "3c0b1c0e0c4a0f0d0a9e8b7c6d5e4f3a2b1c0d9e8f7a6b5c4d3e2f1a0b9c8d7"
}

The sample digest is illustrative. Use the tool for the live value.

Troubleshooting

Text and file hashes differ for the same name

A file may include a trailing newline or a BOM that the text pane does not. Hash the bytes you actually intend.

FAQ

Should I store passwords with SHA-256?

No. Use a password hashing function with salt and work factor, such as Argon2id, scrypt, or bcrypt.

Why offer MD5 at all?

Checksums in older documentation still use MD5. Offering it locally is better than sending the file to a random website. It is labelled legacy in the interface.

Is the file uploaded?

No. Bytes are read with FileReader and hashed in WebAssembly in the page.

Can I hash multiple files?

One file at a time in this version, to keep memory use obvious.