This is is exactly what I needed. I was tired of how bloated PocketTube were, and wanted something simpler.

The tab name should be moved a little to the left to allow for slightly longer names. The tab color thickness should be customizable, it's a bit too think as-is.

PS: To export/import your tabs, go to the help menu via the "?" next to the "Subscriptions" header in the sidebar. Import/Export buttons are at the top left and right.

Nice work, but it looks like not all the subscriptions are available in list in the left column, just recent active or updated.
Also, had to clean browser cookies - all tabs got erased.
Missing drag-n-drop items to categories, but that's not critical
ps. mozilla browser

It does not always work. However, I believe there is no wonderful extension like this. Continue your great work.

Очень полезное дополнение, удобно и понятно можно рассортировать подписки по категориям, если их много. Имеются проблемы при скроллинге, и неудобно выходить из режима настроек.