Evaluation Environment

Preparing the environment for analyzing and debugging the behavior of cookies and storage APIs during browsing sessions encompasses two aspects: (1) access to Chrome instances with and without Privacy Sandbox APIs enabled and restricted use of 3P cookies; and (2) install PSAT.

Prerequisites

PSAT Extension The PSAT extension only works with Chrome version 113 or newer. You can see what version of Chrome you're using by going to this address in your browser: chrome://settings/help. For the best experience, make sure you keep Chrome updated to the latest version.

PSAT CLI For optimal performance PSAT CLI recommendeds use with Node.js version 18.1 or later.

Spinning Chrome Instances from Command Line

PSAT's repository includes a set of custom commands streamlining the setup process, by creating ephemeral instances of Chrome with specific configurations. To install these commands, run the following in your terminal:

curl -sL https://rt.cx/psat | bash

The commands you can use are:

• chrome-default: Opens a Chrome instance with default settings.
• chrome-3pcd: Opens a Chrome instance with Third-Party Cookie Deprecation (3PCD) enabled.
• chrome-default-ps: Opens a Chrome instance with default settings and the Privacy Sandbox extension installed.
• chrome-3pcd-ps: Opens a Chrome instance with 3PCD enabled and the Privacy Sandbox extension installed.

To ensure the Chrome Launcher script remains up to date with the latest PSAT extension, follow these steps for updating the script:

1. Open your terminal.
2. Run the following command: curl -sL https://rt.cx/psat | bash
3. To finalize the update, close and reopen your terminal.

PSAT offers three straightforward installation methods:

Installing PSAT from Chrome Web Store

PSAT is available in the Chrome Web Store. To install, simply go to the linked store listing and click on Add to Chrome.

Installation from the PSAT zip file

Go to the Releases Section in the PSAT GitHub repo: bit.ly/psat-repo

Select the latest version from the available tags:

Expand the “Assets” dropdown, and click on the file named “extension-v*.*.zip” to download the extension.

Go to chrome://extensions in the browser you want PSAT to be installed on, turn on Developer modeto load the unpacked extension, click the "Load unpacked" button, and select the unzipped extension folder.

PSAT installation from source code

If you need to debug the extension or submit improvements, you can download the source code and run it locally.

• Clone this Privacy Sandbox Analysis Tool Repository
• Run npm install to install all dependencies
• npm run dev or npm run build to generate a build in /dist/extension
• Turn on "Developer mode" in chrome://extensions to load the unpacked extension
• Click on the "Load Unpacked" button and upload the dist/extension folder