Legion Remix KnownFilter is a lightweight World of Warcraft addon that improves vendor browsing by automatically hiding or recoloring items you already know — such as recipes, toys, transmog sets, or battle pets you’ve already collected.

Features

Hides or desaturates already-known items in vendor windows.
Detects “Already Known”, “Collected (X/Y)”, and similar tooltip strings in all languages.
Supports recipes, toys, transmog ensembles, and pets.
Allows manual control for special items.

Commands

Command	Description
`/kf hide`	Hide already-known items.
`/kf color`	Desaturate and gray-out known items instead of hiding them.
`/kf add <itemid>`	Manually mark an item as already owned (useful for special cases).
`/kf rm <itemid>`	Remove a manually marked item from the known list.
`/kf add druidform`	Shortcut to add the Legion Druid flight form (ID 253024).
`/kf rm druidform`	Shortcut to remove the Druid flight form from the list.

🧙‍♂️ About the Druid Flight Form:
Due to technical limitations, Blizzard’s APIs don’t properly report ownership of the Legion Flight Form customization.
To handle this, you can manually mark it as “known” using:

/kf add druidform

If you made a mistake, you can still remove it later with:

/kf rm druidform

This ensures your vendor display stays clean, even when Blizzard’s data doesn’t cooperate!

Legion Remix : Known filter