Install in Chrome

Use desktop Chrome 142 or later. For store installation, open the Chrome Web Store listing.

Download the bundle

The public ZIP above works in both Chrome and Edge. GitHub releases are a secondary archive; their Source code downloads are not extension installers.

Install manually

Extract the ZIP into a permanent folder, such as Documents/Briefmark. Keep that folder after installation: Chrome loads the extension from it.
Enter chrome://extensions in the address bar and turn on Developer mode.
Choose Load unpacked. Select the extracted folder that contains manifest.json, not the ZIP or a parent folder.
Open Chrome’s Extensions menu and pin Briefmark.
Open a regular website, refresh it, and click Briefmark. Select an element and save a comment to check the installation.

These steps use Chrome’s unpacked-extension installation flow.

Update a manual installation

Download the newer Chrome ZIP from this page. Save any open draft, then replace the contents of the same extension folder with the extracted files. Keep the folder’s path unchanged. At chrome://extensions, click Reload on Briefmark’s card, then refresh the websites where you use it.

Do not remove the installed extension to update it. A different folder, browser profile, or switch to the store installation can create separate storage. Export your feedback first if changing installations; there is no automatic transfer or import.