# Auslogics Windows Slimmer
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Clean unnecessary Windows data and reduce the system storage footprint.
## Review Windows cleanup with Auslogics Windows Slimmer
Auslogics Windows Slimmer helps reduce storage occupied by unnecessary system data and unwanted applications. Its tools cover cleanup, application removal, and Compact OS compression.
Begin with a scan of the category you want to inspect. Review what is selected before applying changes rather than treating every detected item as something you no longer need.
## Inspect temporary files and system leftovers
Cleanup categories include temporary files, application logs, memory dumps, and old Windows Update data. Select the categories that fit your current maintenance task.
Logs and dumps can be useful when investigating a problem. If you are troubleshooting a recent crash or update, check whether you still need that information before removing it.
## Remove applications you no longer use
Application cleanup helps you review installed software and remove unwanted programs or leftovers. Use it to inspect your own application collection rather than judging a program solely by its name.
Check whether you still need the software, its saved settings, or an installer before uninstalling it. Keep personal project files separate from the application removal decision.
## Understand what Compact OS changes
Compact OS reduces the Windows installation footprint by compressing system files. It serves a different purpose from deleting temporary data or uninstalling an application.
Review the current state and the change you intend to make before enabling compression. Storage savings and performance effects vary, so assess the result on your own computer instead of assuming a fixed benefit.
## Prepare recovery before substantial cleanup
Review available backup and recovery settings before making changes. Keep an independent copy of important personal files rather than relying on a cleanup tool as your only recovery route.
If a category relates to older installation or recovery data, consider what you might need to undo later. Save work, make a considered selection, and inspect the result before starting another maintenance task.
## Separate storage savings from performance claims
Removing unwanted data can reclaim space, but a smaller Windows footprint does not establish that every application will run faster. Measure free space and the task you wanted to improve separately.
Persistent delays may have other causes. Check the outcome of cleanup before applying unrelated adjustments, and keep a record of changes if you are investigating a specific problem.
## Choose a tool around the files involved
For repeated personal files, see [Auslogics Duplicate File Finder](https://find-your-software.com/auslogics/duplicate-file-finder/) . For solid-state storage maintenance, review [Auslogics SSD Optimizer](https://find-your-software.com/auslogics/ssd-optimizer/) .
Windows Slimmer focuses on cleanup and reducing the Windows footprint. It does not replace backup, device-driver troubleshooting, or hardware repair.
## Auslogics Windows Slimmer FAQ
Answers to common questions
### What is Auslogics Windows Slimmer used for?
It helps clean unnecessary Windows data, remove unwanted applications, and reduce the installation footprint through Compact OS.
### What cleanup categories does it provide?
Published categories include temporary files, application logs, memory dumps, and old Windows Update data. Inspect the scan results before removal.
### Can it uninstall unwanted programs?
Yes. Application cleanup lets you review and remove software you no longer need. Preserve any personal files or settings you want to keep first.
### What does Compact OS do?
It compresses Windows system files to reduce their storage footprint. It is a separate operation from deleting temporary files.
### Should I remove every detected item?
No. Review the purpose of each category. Diagnostic logs, recovery data, or application settings may still be useful.
### Does cleanup guarantee a faster computer?
No. Storage savings and performance are different outcomes. Results depend on your computer and the cause of any slowdown.
### Does the tool replace a backup?
No. Review the available recovery options and keep independent backups of important files before substantial cleanup.