The extension doesn't work in Vivaldi 3.0.1874.38. It writes that connected to the client but I don't see any documents. It works fine in Chrome. ManicTime native plugin for Chrome was switched off for a clean experiment.

It happens because Vivaldi has the same UserAgent string as Chrome since 2.10 version.

I solved this issue when added string
return "vivaldi";
after
function getProcessName() {
in unpacked extension, like it was written by Firsh in the first comment here.

I'd say that Vivaldi is a Chromium-based webbrowser.

Can we get support for "Document timeline: Vivaldi"
or more generic "Document timeline: Chromium-based webbrowsers"

Ìnstalling the chrome extension "ManicTime Url Tracker" restored url tracking with Vivaldi for me. Thanks!

In the Vivaldi app, yes? But wich extension should I use or create.

This will work ok. Process name is what we use in ManicTime to map what is coming from javascript to a process. It would be great if we could get something non constant like fork name or process id, but I don't think either is available in JS.

1. Find unpacked extension in your app data folder.
2. Move it to a desired location.
3. Delete _metadata folder.
4. Edit background.js
5. Do a search and replace for "chrome" to "vivaldi" (with the double quotes).
6. In vivaldi Ctrl+Shift+E, enable developer mode.
7. Load the folder as unpacked extension and enable it.

It'll track URLs from there on :) Proof: https://i.snag.gy/XL3xPC.jpg