SEO Report Tools

Webmaster Utilities · Runs in your browser · Free

MD5 & SHA Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text in your browser.

What this tool does

Computes cryptographic hashes of any text for checksums and file verification, with all five common algorithms in one view.

Who should use it

Developers verifying checksums and anyone comparing text for exact equality.

How it works

The text is encoded as UTF-8. SHA hashes use your browser's Web Crypto API; MD5 uses a built-in RFC 1321 implementation because Web Crypto does not provide it.

How to use it

  1. Enter or paste text to hash in the form.
  2. Use "Load example" if you want to see how input should look.
  3. Press the run button. Processing happens instantly in your browser.
  4. Review the result panel, then copy or download the output if the tool offers it. Use Reset to start over.

Practical example

MD5 of "hello" is 5d41402abc4b2a76b9719d911017c592.

Understanding the results

A single changed character produces a completely different hash.

Limitations

MD5 and SHA-1 are not secure for signatures or passwords. Never store passwords as plain hashes.

Accuracy and report transparency

Results are computed in your browser from exactly what you enter. Deterministic steps (counting, parsing, encoding, validation) are verified by an automated test-suite with known answers. Where a method is a heuristic, the result panel says "estimated". No external data is used and nothing is invented.

Privacy

Your input never leaves your device for this tool. We count anonymous events (tool opened, run, copied) without storing what you typed. See the Privacy Policy.

Try these next

Base64 Encoder / DecoderEncode text to Base64 (UTF-8 safe) or decode Base64 back to text.URL Encoder / DecoderPercent-encode or decode text for use in URLs and query strings.Text Diff CheckerCompare two versions of a text line by line and see exactly what was added or removed.

Frequently asked questions

Is the text sent anywhere?

No, hashing is performed locally.

Is my data sent to your server?

No. This tool runs entirely in your browser, so the text or files you enter stay on your device. We do record anonymous counts of how often each tool is opened or run (no input data) to see which tools are useful.

How accurate are the results?

Counting, parsing, encoding and validation steps are deterministic and covered by automated tests with known answers. Anything based on a heuristic is labelled "estimated" in the result panel.

Is this tool really free?

Yes. There is no account, limit or paid plan. The site is supported by advertising, which is disclosed on our Advertising Disclosure page.

References