---
title: Installing on Vivaldi
description: How to install the OMM script on Vivaldi
sidebar:
  label: Installing on Vivaldi
  icon: /vivaldi.svg
  badge: New
---

<Panel title="Something to know">
  Before installing the userscript, you'll need a UserScript manager to manage it.
</Panel>

1. **Install ScriptCat**

    Install the ScriptCat extension from the Chrome Web Store.

    <DownloadButton href="https://chromewebstore.google.com/detail/scriptcat/ndcooeababalnlpkfedmmbbbgkljhpjf" icon="puzzle" secondary>Get ScriptCat</DownloadButton>

2. **Turn on Allow User Scripts**

    ![img1](https://docs.scriptcat.org/en/assets/images/chrome-extensions-page-fcb58c071828884a83bec334543ce417.webp)

    In the extension management interface, find the ScriptCat extension and click **```Details```**

    ![img2](https://docs.scriptcat.org/en/assets/images/scriptcat-extension-details-9957c116842ba0a6ada7b9118fa3dabc.webp)

    In the ScriptCat extension details page, find the **```Allow User Scripts```** option and enable it. Then disable and re-enable the extension, or restart the browser to make the script functionality effective.

    ![img3](https://docs.scriptcat.org/en/assets/images/allow-user-scripts-toggle-51fd7d8dfdd2ce9cc29ea95bcf709205.webp)

3. **Enable Developer Mode**

    ![img1](https://docs.scriptcat.org/en/assets/images/chrome-extensions-page-fcb58c071828884a83bec334543ce417.webp)

    Toggle the **```Developer mode```** switch in the top right corner

    ![img4](https://docs.scriptcat.org/en/assets/images/chrome-developer-mode-toggle-4f545ca72c0e1b9a40c7ccc7782b7a48.webp)

    After enabling developer mode, restart the browser to make the script functionality effective.

4. **Install the userscript**

    Once ScriptCat is installed, and your browser restarted, install the OhMyMathpad userscript.

    <DownloadButton href="https://raw.githubusercontent.com/ld3z/omm/main/oh-my-mathpad.user.js">Install userscript</DownloadButton>