Browser extension

Your favorite tools, in your toolbar

JSON Formatter, JWT Decoder, Base64, URL Encoder, UUID Generator, and Hash Generator — one click away, no tab switch. Same guarantee as the site: nothing you paste or type ever leaves your browser.

Install in 3 steps

  1. 1

    Download the extension

    Grab the .zip below and unzip it anywhere on your machine — no installer, no admin rights needed.

  2. 2

    Open your browser's extensions page

    Chrome: go to chrome://extensions. Edge: go to edge://extensions. Then turn on "Developer mode" (top right).

  3. 3

    Load it unpacked

    Click "Load unpacked" and select the folder you unzipped. The DevTools Cloud icon appears in your toolbar immediately.

Included tools

Frequently asked questions

It's brand new — a Web Store listing is planned, but the manual install above works today and takes about 30 seconds. Since the extension is open source, you can also read every line of code before installing.