Disable Unused Thumbnail Sizes

Open ThumbPress, review the full list of registered sizes, and switch off the ones you don't use. WordPress then skips them on every future upload.

Only disable sizes your theme and plugins don't display. ThumbPress shows every registered size so you can keep the ones in active use and safely turn off the rest.

Disabling a size stops it being generated going forward. To remove the copies that already exist, run Regenerate Thumbnails, which rebuilds your library against the sizes you kept.

Sizes no template or plugin references are safe to turn off. If you're unsure, disable one at a time and check your key pages, then regenerate once you're confident.

Yes. The scaled copy WordPress makes for large uploads appears in the list alongside every other registered size, so you can switch it off like any of them.

No. Anything you leave enabled is generated exactly as before. Disabling is opt-out per size, so your theme keeps every dimension it actually renders.

It scales with your library. If a single upload currently spawns a dozen files and you cut that to four, you are removing roughly two thirds of the files created from every future upload.

New uploads start generating it again immediately. To create it for images you already have, run Regenerate Thumbnails once and the missing size is filled in across the library.