This Firefox addon, a helper addon to the TreeStyleTab addon, displays the total count of tabs in the "new tab" button:
Install it from the releases page!
web-ext build --overwrite-dest
Go to about:debugging and load the addon from the web-ext-artifacts directory.
- Increment the version in
manifest.json - Commit and tag the release
web-ext build --overwrite-dest- Upload the zip file to the Firefox Addon Developer Hub
- Download the signed xpi file and upload it to the GitHub release