GIF Player

Didn't work on GitLab.com

This is the gif I wanted to scrub:
https://gitlab.com/newbit/video-files/-/blob/master/rootAVD_MacOS.gif

Your extension's popup url:
chrome-extension://hkppkincliogkmamcddjhodnkkdlccfo/popup.html#[%22undefined%22,%22https%3A%2F%2Fgitlab.com%2Fnewbit%2Fvideo-files%2F-%2Fraw%2Fmaster%2FrootAVD_MacOS.gif%22]

Your popup player shows the "LOADING..." animation with this error:
"Not a valid GIF file."

Would love to use your extension since it doesn't require any permissions (unlike alternatives), while I was able to scrub this gif using this extension:
https://chromewebstore.google.com/detail/gif-scrubber/gbdacbnhlfdlllckelpdkgeklfjfgcmp