What does Cache Kid clean?

Cache Kid finds rebuildable cache, previews, renders, logs, and temporary files from creative apps like Adobe, Final Cut Pro, DaVinci Resolve, Blender, Figma, Capture One, and Logic Pro.

Does Cache Kid clean my whole Mac?

No. It focuses on known creative app cache folders and any custom cache folders you choose to add, so cleanup stays targeted and reviewable.

Will it delete projects, media, exports, or documents?

No. Cache Kid is built to avoid your work and only target cache creative apps can rebuild. You review every path and size first, selected items move to Trash, and cleanup is blocked while related apps are open.

Does Cache Kid need Full Disk Access?

No. Cache Kid asks for specific folder access through the standard macOS picker and only reads folders you approve.

Can I try it for free?

Yes. Scans are always free, and free users get two full clean runs. Cache Kid Pro is a one-time lifetime purchase through the Mac App Store with no subscription.

Does Cache Kid upload my files?

No. Cache Kid works locally on your Mac and does not upload your project files, media, exports, documents, or scanned folder contents.

Will clearing cache make my Mac faster?

Cache Kid is focused on freeing storage, not making fake speed promises. Some apps may need a moment to rebuild previews or thumbnails after cleanup.

Is it safe to delete generated library files in Final Cut Pro?

In most cases, yes. Apple says generated files such as render files, optimized media, and proxy media can be rebuilt from original media. Use Final Cut's menu rather than deleting unknown library package contents.

Will deleting generated files remove my original clips?

No. The generated files command does not delete original media. Still, make sure you are using the Final Cut Pro menu, not manually deleting unknown files inside a library package.

Does Cache Kid clean inside Final Cut Pro libraries?

Cache Kid focuses on creative cache folders and review-first cleanup. Use Final Cut Pro built-in commands for library-generated files.

Final Cut Pro

Final Cut Pro library too large on Mac

Published May 16, 2026, updated May 16, 2026

Quick answer

Use Final Cut Pro File > Delete Generated Library Files to remove render files first, then optimized or proxy media if you no longer need them. Original media is not deleted by that command, and Cache Kid can help review other creative cache outside the library.

Final Cut Pro library too large on Mac: 2026 size guide thumbnail

If a Final Cut Pro library is too large, use Final Cut Pro's built-in Delete Generated Library Files command before opening the library package in Finder. Render files, optimized media, and proxy media are generated files that Final Cut can recreate from original media.

Quick fix: select the library, choose File > Delete Generated Library Files, then remove unused render files first.

Why Final Cut Pro libraries get huge

Final Cut Pro can store imported media, render files, optimized media, proxy media, thumbnails, analysis files, and project data inside one library package. That makes libraries easy to move, but it also means the package can balloon after a few edits, background renders, and proxy sessions.

If you have ever wondered why a simple cutdown turned into a 300 GB library, generated files are often the first place to look.

What to do first

Open Final Cut Pro and select the library in the sidebar
Choose File > Delete Generated Library Files
Start with unused render files
Delete all render files if you are finished editing and can rebuild later
Delete optimized or proxy media only if you understand the rebuild cost
Do not manually delete unknown files inside the library package

What Final Cut can rebuild

File type	Usually rebuildable	Notes
Render files	Yes	Final Cut can render them again
Optimized media	Yes	Rebuild may take time and storage
Proxy media	Yes	Useful on slower Macs, so delete only if not needed
Original media	No	Keep this safe and backed up
Library database	No	Do not manually edit package internals

Apple's Final Cut Pro render file guidance says original media is not deleted when you remove render files. Apple also notes that optimized and proxy files can be deleted and regenerated from the original media.

Be careful with managed media

Final Cut libraries can contain original media if you imported clips into the library. They can also point to media stored somewhere else. That difference matters.

Use Final Cut's own menus for generated files. Do not right-click a library package and start deleting folders unless you are doing a very specific recovery job and have a backup.

Where Cache Kid helps

Use Final Cut Pro's own commands for files inside a library. Cache Kid helps with creative cache outside that workflow, such as app cache, preview folders, logs, and custom cache folders you choose to add.

That keeps the responsibility clear: Final Cut manages library-generated files, Cache Kid helps review broader creative cache without pretending to be a Final Cut library editor.

What Cache Kid will not fix

Cache Kid will not clean inside your Final Cut library package or decide whether optimized media is still useful for an active edit. If the library itself is huge, start in Final Cut. If the rest of the Mac is full of creative cache, Cache Kid can help with that review.

Last verified with current Apple Final Cut Pro storage guidance and macOS 15.

Frequently asked questions

Is it safe to delete generated library files in Final Cut Pro?: In most cases, yes. Apple says generated files such as render files, optimized media, and proxy media can be rebuilt from original media. Use Final Cut's menu rather than deleting unknown library package contents.
Will deleting generated files remove my original clips?: No. The generated files command does not delete original media. Still, make sure you are using the Final Cut Pro menu, not manually deleting unknown files inside a library package.
Does Cache Kid clean inside Final Cut Pro libraries?: Cache Kid focuses on creative cache folders and review-first cleanup. Use Final Cut Pro built-in commands for library-generated files.