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Download JustZix

Available now — 2-minute install

Pick your browser below and download the ZIP — there is a dedicated build for Chrome, Firefox, Edge and Opera. Load it in developer mode (Chrome/Edge/Opera) or as a temporary add-on (Firefox). The backend (sync, share, backups) is already live in production. One-click store installs are coming shortly.

Download now (ZIP package)

Current release packaged as an archive — a separate build per browser. Download the one for your browser, unzip and load it.

Google Chrome

⬇ Download extension v3.2.76 Size: 1.1 MB · justzix-chrome-v3.2.76.zip

Step-by-step installation

  1. Unzip the downloaded archive — you will get a justzix/ folder.
  2. Open chrome://extensions/ in Chrome.
  3. Enable "Developer mode" using the toggle in the top right corner.
  4. Click "Load unpacked" and select the justzix/ folder.

Mozilla Firefox

⬇ Download extension v3.2.76 Size: 1.1 MB · justzix-firefox-v3.2.76.zip

Step-by-step installation

  1. Open about:debugging#/runtime/this-firefox in Firefox.
  2. Click "Load Temporary Add-on…".
  3. Select the downloaded ZIP file — the extension loads right away.

An add-on loaded this way runs until you close Firefox. For a permanent install, use Firefox Developer Edition or wait for the Firefox Add-ons release.

Microsoft Edge

⬇ Download extension v3.2.76 Size: 1.1 MB · justzix-edge-v3.2.76.zip

Step-by-step installation

  1. Unzip the downloaded archive into a folder on your disk.
  2. Open edge://extensions/ in Edge.
  3. Enable "Developer mode" using the toggle in the left sidebar.
  4. Click "Load unpacked" and select the unpacked folder.

Opera

⬇ Download extension v3.2.76 Size: 1.1 MB · justzix-opera-v3.2.76.zip

Step-by-step installation

  1. Unzip the downloaded archive into a folder on your disk.
  2. Open opera://extensions/ in Opera.
  3. Enable "Developer mode" using the toggle in the top right corner.
  4. Click "Load unpacked" and select the unpacked folder.
⬇

Browser extension stores

One-click installs from Chrome Web Store, Firefox Add-ons and Microsoft Edge Add-ons are on the way. This page will be updated as each listing goes live.

Coming soon

Requirements

  • Google Chrome 100+, Mozilla Firefox, Microsoft Edge and Opera — a dedicated build for each.
  • Brave / Vivaldi and other Chromium-based browsers — work with the Chrome build, officially unsupported.
  • A JustZix account is not required for basic CSS/JS rule work — only for sync and sharing.