Prism Browser
English
Download ↓

EXTENSIONS · COMMUNITY

Extension management: import once, enable per profile.

Prism keeps all extensions in one local extension library, and each profile chooses which ones to load. Data created by extensions (such as login states or wallet data) is stored in each profile’s own data directory, isolated from the others.

Updated · Based on Prism 0.3.22

Prism Extensions window: Refresh, Import Local Extension and Install from Chrome Web Store; the list shows uBlock Origin Lite (from the Chrome Web Store) and a local extension, with edit, remove and enable-for-all-profiles options
The “Extensions” window (demo data).

Install from the Chrome Web Store

  1. Copy the extension URL

    Open the extension’s page in the Chrome Web Store and copy its URL, which looks like https://chromewebstore.google.com/detail/name/32-character-extension-ID.

  2. Choose the download network

    Click “Install from Chrome Web Store”, paste the URL and choose how to download it: a direct connection from this computer, the system proxy, or the proxy of a profile that has one configured.

  3. Download and install

    Prism downloads the CRX3 package from Google’s official update URL, verifies the signature and extension ID, safely unpacks it and adds it to the extension library; the installed extension keeps the same ID as the store version.

  • Entering only an extension ID, using old chrome.google.com/webstore URLs and importing .crx files directly are not supported at the moment.
  • Extensions are not updated automatically: to get a new version, remove the extension from your profiles and delete it, then install it again from the store.
  • The same store extension is never imported twice.

Import an unpacked local extension

Select an extension folder that contains manifest.json to import it. Prism checks the manifest format (Manifest V2 / V3), name and version, and that the folder is no larger than 200 MB and 20,000 files and contains no symbolic links, then copies it into its own extension library. Manifest V3 extensions are recommended; whether a Manifest V2 extension runs depends on the kernel version.

Choose per profile or enable for all

  • In the profile editor, go to “General” → “Startup Extensions” to choose which extensions the profile loads (up to 50 per profile).
  • Turn on “Enable for All Profiles” for an extension to load it in every existing and new profile.
  • Changes to the enabled state or the extension files take effect after the profile restarts.
  • Extension data is stored in each profile’s own data directory: the same extension has separate logins and settings in different profiles.

Security note

Using extensions with MCP

Pro’s MCP can list and switch to extension pages, such as a wallet extension’s confirmation pop-up, so the AI can read and click them in profiles you allow. See AI × MCP.

Related features and guides

Cookies, backup & migrationCookie JSON, full data backups and encrypted migration packages take your profiles to a new computer.ProAI × MCPExpose only the profiles you authorize, and let an AI client read pages, click, fill in forms and even create profiles.Bulk profile managementCSV import of up to 500 profiles at once, bulk launch, groups and tags, profile numbers and the Trash.