Windows · System & Disk Utilities
BleachBit for Windows
Open-source system cleaner that clears browser caches, temporary files, and application logs to recover disk space with reviewable per-item control.
Updated August 9, 2026 · Reviewed by SoftNexi Editorial Team, Software research and documentation
Overview
BleachBit is a free, open-source cleanup utility that scans a long list of applications — browsers, Windows itself, media players, and more — for cache files, logs, temporary files, and other reclaimable data, then lets you review exactly what will be deleted before committing.
Its cleaning list is granular: you tick specific checkboxes per application (e.g., 'Firefox: cache' separately from 'Firefox: cookies') rather than accepting an opaque one-click 'optimize' button. A preview mode shows what would be deleted before you run the actual clean, which is a meaningful safety difference from cleaners that delete on click.
Because it's open source with a public codebase, its behavior can be independently reviewed rather than trusted blindly, which matters more for a tool that deletes files than for most utilities.
It's a cleanup tool, not a space visualizer — use TreeSize Free or WizTree first to find what's actually consuming space, and turn to BleachBit specifically for clearing caches, temp files, and application traces.
Key features
- Granular per-application, per-item cleaning checklist
- Preview mode showing exactly what will be deleted before cleaning
- Covers browser caches, Windows temp files, recycle bin, and many third-party applications
- Optional file shredding for more thorough deletion
- Command-line interface for scripted cleaning
- Open-source codebase available for review
System requirements
- Operating system
- Windows 11 and Windows 10 (older Windows releases also supported)
- Architecture
- x64 or x86 installer
- Permissions
- Administrator rights required to clean some system-level locations
How to install BleachBit
1. Download from bleachbit.org
Choose the Windows installer matching your architecture.
2. Install
Run the installer and approve the UAC prompt to enable cleaning of system-level locations.
3. Review the cleaner list
On first launch, look through the checkbox tree and only select applications and categories you recognize.
How to use it
1. Preview before cleaning
Select the items you want to clean, then click Preview to see the exact list of files that will be removed before committing.
2. Run the clean
Once satisfied with the preview, click Clean to actually delete the selected items.
3. Avoid shredding by default
Leave the Shred option off unless you specifically need to make deleted files unrecoverable; it's slower and unnecessary for routine cleanup.
4. Repeat periodically
Browser and system caches rebuild over time, so running BleachBit occasionally rather than obsessively is the practical approach.
Safety and privacy
- Download only from bleachbit.org; the open-source project publishes releases there and on its official GitHub repository.
- Always use preview mode before the first real clean on a new machine to understand exactly what each checkbox removes.
- Bundled software
- The official installer does not bundle third-party offers.
- Privacy
- Runs entirely locally; it does not upload any information about your files.
Known risks
- Deleting browser data will sign you out of sites and clear saved form data — review the checklist carefully if you rely on that data.
- The 'shred' option makes deleted files harder to recover, so use it deliberately, not by default.
- Some system-level cleaning options require care; only enable Windows-specific cleaners you understand.
What's new
Current release series
BleachBit is actively maintained with periodic releases that add or update cleaner definitions for newer application versions. Check the developer's release notes for the current version.
Pros and cons
Pros
- Free and open source with reviewable code
- Granular control over exactly what gets deleted
- Preview mode reduces the risk of surprises
- Covers a long list of applications beyond just the browser and Windows
Cons
- Granular checklist can be overwhelming for first-time users
- No disk-space visualization — pair it with a dedicated analyzer
- Careless use of aggressive options (like shredding or deep system cleaners) can remove data you wanted
Verdict
BleachBit is a capable, transparent cleanup tool for anyone willing to spend a few minutes reviewing what each checkbox actually does. Use TreeSize Free or WizTree to find large offenders first, then BleachBit to clear the accumulated cache and temp-file clutter.
Frequently asked questions
Is BleachBit safe to use?
It's open source and includes a preview mode, so you can see exactly what will be deleted before it happens. As with any cleaner, review the checklist before running it, especially the first time.
Will BleachBit delete my saved passwords?
It can, if you select browser cleaning options that include saved form data or cookies — review each checkbox rather than selecting everything.
Does BleachBit find large files like a disk analyzer does?
No, it cleans known cache and temp-file locations rather than visualizing overall disk usage. Use a tool like TreeSize Free or WizTree to find large files first.