Even though MD5 is no longer a good choice for storing passwords, it still shows up in everyday developer work: checksum comparisons, legacy integrations, migration scripts, cache keys, and quick data fingerprints.

So I added a small browser-based tool to Tools Online: MD5 Hash Generator .

Why I built it

I kept needing a quick way to paste a string and get the standard 32-character MD5 hash without opening a terminal, writing a one-off Node script, or searching for a random page that might send input to a server.

The tool is intentionally narrow: paste text, optionally add a salt, and copy the generated MD5 output.

What it supports

The first version includes:

Standard 32-character MD5 output

Short 16-character variant

Uppercase and lowercase formats

Prefix or suffix salt support

Recent hash history

Copy buttons for the generated values

It runs directly in the browser, so the input text does not need to leave the device.

The important security note

I also wanted the page to be clear about what…