BleachBit Features, Explained

The interface is deliberately plain: a list of cleaners on the left, a results panel on the right, and two buttons. Here is what sits behind each part of it.

Preview before delete

Preview scans the categories you checked and prints every matching file with its size, without removing anything. Nothing else in the program matters as much as this button — it is what turns a cleanup tool into something you can trust on a work machine.

Application cleaners

Roughly ninety programs are covered, including all mainstream browsers, office suites, media players, chat clients, and development tools. Each cleaner is a small, readable rule file, which is why community contributors can add support for new apps quickly.

File and folder shredding

Shredding overwrites a file before removing the directory entry, so ordinary recovery software finds nothing useful. It works from the File menu or from the Windows context menu if you enabled that during installation.

Free space wiping

This one targets files you deleted long ago. BleachBit fills the unused portion of the drive with junk data and then releases it, which erases the remnants of old deletions. Useful before selling a computer; unnecessary as part of a weekly routine, and skip it entirely on SSDs where TRIM already does the job.

Portable mode

The portable build carries its configuration alongside the executable, so a technician can keep one cleanup toolkit on a USB drive and use it on any Windows PC.

Command line and scheduling

The command line interface accepts individual cleaner names, which makes it easy to attach a specific cleanup to Task Scheduler — for instance, clearing temporary files every Friday evening while leaving cookies untouched.

Whitelisting

Any path added to the whitelist is permanently skipped. If a cleaner keeps proposing a folder you want to protect, this is the fix, and it survives updates.

Related Graphics Software

Windows users who also edit photos or work with graphics may want to look at GIMP, a popular open-source image editor. It runs on Windows alongside the rest of your desktop software and handles everything from quick retouching to layered compositions. The GIMP Software site has details about its features, supported platforms, and available versions.

See these features in a real cleanup in the guides section, or check Windows-specific notes before your first run.