- Open view the raw code for vaccheck.min.js.
- Select all (ctrl + a)
- Copy (ctrl + c)
- Bookmark this (or any) page.
- Right click your new bookmark and edit it. In the URL or Location field, paste the contents of vaccheck.min.js. You can rename the name too.
- Navigate to your friends recently played with page. (You could probably bookmark that too 😉)
- Click the bookmarklet and it will use the Steam API to get a list of VAC bans for those users on that page.
Pro tip: This bookmarklet also works under the other tabs on that page, including the "All Friends" tab! And it also works on your friend's friends list! Just go to their profile page, click "Friends" on the right panel, and use the bookmarklet to see their friend's vac bans!
Updated API key
Added groups support! To use, visit a group page, click on "View All" under the group members section, and run the bookmarklet to see who in the group has been VAC/OW banned!
Credits go out to iEyepawd from this reddit post. His idea inspired me to write a version that can be easily used as a bookmarklet.