Show in which countries the album is available and in which it is unavailable. Additionally, show the label and UPC code. The script is also available for Deezer here.
Install the script using Tampermonkey or another userscript manager.
For users of the Tampermonkey extension (version 5.3+) in a Chrome-based browser, enabling either the "Allow User Scripts" toggle (available in Chrome 138+ via extension settings) or Developer Mode is required. - tutorial
You can set your default country by editing the script. This small feature highlights your country code, making it easier to spot. For example:
const YOUR_COUNTRY_CODE = 'GB';
You can enable MusicBrainz Lookup by setting showMusicBrainzLookup to true. The link will appear next to the UPC code, allowing you to quickly find the release on MusicBrainz.