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It is lightweight and only creates configuration files within its own folder, making it easy to "uninstall" by simply deleting that folder.

Unlike standard software that requires a full installation, the portable version of BleachBit offers all the cleaning power of the original but in a self-contained package that runs from any folder or USB drive. bleachbit portable download

You can carry it on a flash drive and use it to clean any computer without needing administrator permissions to install software. It is lightweight and only creates configuration files

It includes advanced features like "Shredding" (to make files unrecoverable) and "Wiping Free Disk Space" (to hide traces of previously deleted files). How to Download and Use BleachBit Portable bleachbit portable download