Best way to optimise blend file size?

I am currently working on some semi-big long projects/scenes that involve mutliple models and textures etc.

I have to embed all textures into the blend file because i’m constantly switching desktops etc.

Now my file is already 2gb and it’s slonking up my 32gb of RAM and almost all my VRAM.
Is there an easy way to locate unused materials en textures that I can delete from the blend file so that the size get’s reduced?

I imported a lot of textures/materials that I don’t use anymore on any models and would like them to be gone but figuring out which ones they are is kind of a hassle…

See Outliner → Orphaned Data… delete (or unlink) this…

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thanks, had to click purge multiple times for everything tobe gone!