Yes, this is definitely on our roadmap. We manage feature requests in GitHub discussions and there is already one for this feature: github.com/solidtime-io...
You can follow the progress there and maybe upvote if you want this feature.
github.com
Browser Extension · solidtime-io solidtime · Discussion #236
Hey, I really love solidtime. It would be nice to have a browser extension to start/stop time tracking. Lots of other tools (e.g. Toggl) have one.