Installed. Try your first change for free.

Start with the office demo, a sample workspace you can change before using Tweaksy on your own software.

Not installed yet on this computer? Get Tweaksy from the Chrome Web Store first.

8 standard builds a month on one computer, on Tweaksy's demo pages. No card is needed, and creating a free demo account does not start a subscription. Enhanced builds use 3 of your monthly allowance.

Create a free demo account, or follow the steps below if you already have an account.

1. Pin it

Click the puzzle-piece icon at the top right of Chrome, then the pin next to Tweaksy. Now it's one click away on every site.

2. Sign in on this computer

Click the Tweaksy icon and sign in to the same account you use on tweaksy.app. Choose Sign in with Google or Sign in with Microsoft when offered, or use your account email and password.

For Google or Microsoft, finish signing in in the tab that opens, then return to the extension. Give this computer a name, such as "Office laptop", when prompted.

3. Turn on Chrome's permission switch

For changes that include JavaScript, turn on Chrome's Allow User Scripts setting. The Tweaksy popup shows a button that opens the right page. This is separate from allowing Tweaksy to access each website.

Chrome 138 or newer

  1. Open chrome://extensions and click Details on Tweaksy.
  2. Turn on Allow User Scripts.

Older Chrome

  1. Open chrome://extensions.
  2. Turn on Developer mode at the top right.

4. Make your first demo change

Open the office demo and click the Tweaksy icon there. When prompted, allow Tweaksy on the demo site. Point at something, describe one change, review the preview, then press Keep it if you want to use it.

Changes you keep can run on their matching pages after you allow that site on this computer. You can switch them off in the extension or your account.

Ready to use Tweaksy on your own software?

The free account works on Tweaksy's demo pages only. Choose a paid plan when you want to use it on your own websites. You still choose which sites this computer can access and approve the changes you want to keep.

Updating Tweaksy

If the popup says Tweaksy needs an update: open chrome://extensions, find Tweaksy and click the reload arrow. If it was installed from the Chrome Web Store, Chrome updates it on its own within a few hours.