Quick answer
For routine cleanup, start with temporary files and rebuildable caches, use Preview, and avoid aggressive options whose effects you have not verified.
By BleachBit.app Editorial Team · Published October 6, 2026 · Updated October 6, 2026
Start low risk
Temporary files and rebuildable caches are a safer starting point than saved sessions or advanced wiping features.
Review before deleting
Use Preview to inspect categories, paths, and estimated size before cleaning.
Change gradually
Add new cleaner groups in small steps and verify normal Windows and application behavior afterward.
Frequently asked questions
Should I use Preview first?
Yes. Preview helps review the scope before data is removed.
Should every cleaner be enabled?
No. Select cleaners for a specific goal and only when you understand the data involved.
What after changing settings?
Run a small cleanup and verify normal Windows and application behavior before expanding the scope.