Developer tools
Small tools for everyday coding.
Encode and decode data, and handle the small tasks that come up while you build. Each tool does one job well and runs right in your browser, with no signup and nothing uploaded.
All developer tools
The small jobs, sorted
Building software means a steady stream of small side tasks. Encoding a value to Base64, decoding a token to see what is inside, or checking the shape of some data. These tools handle each of those on their own, so you can grab the one you need and get back to the actual work. There is nothing to install and no account to create.
Private by design
Every tool here runs locally in your browser. When you type or paste, the work happens on your own device and nothing is sent to a server. That keeps the tools fast, since there is no round trip to wait on, and it means your data stays with you. Once a page has loaded, most keep working even if you go offline.
Frequently asked questions
- What are developer tools?
- They are small utilities that help with everyday coding tasks, like encoding and decoding data or reading a token. Each one is focused on a single job so it stays quick to use, with nothing to set up.
- Are these tools free?
- Yes. Every tool here is completely free with no signup, no limits, and no watermarks. Use them as often as you like.
- Does my data stay private?
- Yes. These tools run entirely in your browser, so your input and results are never uploaded to a server. Once a page has loaded you can even use it offline.
- Do I need to install anything?
- No. The tools work in any modern web browser on desktop or mobile. There is nothing to download and no extension to add.