> ## Documentation Index
> Fetch the complete documentation index at: https://docs.omocaptcha.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Install extension from zip
> How to install the OMOCaptcha extension from a .zip file
## 1. Download the extension
Click [here](https://drive.google.com/drive/folders/1) to open the folder that contains the extensions.
Once you are in, pick the browser you want to install the extension for. In this example we install for Chrome, so we open the **Chrome** folder.
Inside you will see archived files like below. There is a zip file — this is the **latest version** of the extension. We recommend using the latest version.
## 2. Extract the extension
After downloading in step 1 you will have the zip file:
Extract the zip. If a password prompt appears, enter `12345`.
Once extracted successfully you will get a folder like this:
## 3. Install the extension into Chrome
Open Chrome and go to `chrome://extensions/`. The page looks like this:
In the top-right corner, look for the **"Developer mode"** switch. If it is off, turn it on:
Then click the **"Load unpacked"** button:
A folder-picker dialog appears. Navigate to the extracted extension folder from step 2, then click **"Select Folder"**:
After selecting, Chrome will show the extension like below — the installation was successful:
Once installed, [set your API key for the extension](/en/guides/set-api-key-for-extension) to start using it.
If the extension does not work, toggle it off/on or restart your browser.