If the space for storing on the C drive is operating low, each free gigabyte counts. Windows typically occupies greater than 25 GB of house for issues corresponding to updates, restore factors, and cache recordsdata. Plus, pre-installed bloatware additional will increase reminiscence utilization. Freeing up reminiscence can shortly develop into crucial on notebooks with 128 GB SSDs or units with soldered reminiscence. But even on well-equipped methods, it’s value decluttering Windows as it may possibly result in fewer processes, a quicker startup, and decrease CPU load.
Caution: Not each measure is risk-free. If you take away system parts or libraries too aggressively, Windows might develop into unstable, updates might fail or applications might refuse to work. You ought to subsequently at all times work with a restore level, again up your Windows set up and select your strategies fastidiously. Some modifications could be undone instantly, others require a brand new set up.
Quick begin: Delete non permanent recordsdata and replace remnants
Start with the on-board operate “Disk cleanup” and likewise click on on “Clean up system files”. Open it through “cleanmgr” within the command immediate or within the properties menu of the C drive. Activate all tick packing containers right here together with “Update cleanup”. Be positive to keep away from “Downloads” if you’re nonetheless utilizing the folder. Also, you’ll be able to empty the “Recycle Bin” with out hesitation.
Thomas Joos
In addition, open “Settings”, navigate to “System -> Memory -> Memory optimization” and activate automated clean-up. You can even management the habits for different drives through “Advanced storage settings”. In mixture, all of those will ends in you shortly gaining a number of GB of house.

Sam Singleton
Delete search index and take away replace buffer
The Windows Search Index won’t be generally recognized, nevertheless it’s typically a number of gigabytes in dimension. The “Windows.edb” file is situated below “%ProgramData%MicrosoftSearchDataApplicationsWindows” and grows over time. If you’re already working with the “Everything” software, you’ll be able to deactivate the Windows search service and delete the file.
Windows additionally reserves as much as 7 GB for future operate updates by default. If you wish to reclaim this house, open Powershell with administrator rights and execute the command “Set-WindowsReservedStorageState -State Disabled -Online“. The change solely works if no upkeep processes are presently operating. If an error message seems, wait till Windows has accomplished all updates.

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The shared reminiscence will then stay obtainable, however future updates would require adequate free house within the energetic file system.
Compressing system recordsdata with CompactOS
A robust and infrequently underestimated command: “compact /compactOS:always” is utilized by Windows to compress all system recordsdata with none lack of performance. The house gained is between 2 and 6 GB. The command works from Windows 10 onwards and could be cancelled at any time with “compact /compactOS:never”. Use “compact /compactOS:query” to test whether or not the operate is already energetic.
For focused compression of particular person folders, use CompactGUI or Compactor. Both assist varied algorithms corresponding to LZX or Xpress16Ok and likewise work stably with giant directories.

Thomas Joos
While CompactGUI depends on the acquainted “compact.exe” backend and integrates itself into the Explorer menu with an intuitive interface, Compactor makes use of the Windows API instantly and subsequently provides some further capabilities. For instance, the software analyzes the info blocks earlier than compression and intelligently decides whether or not a file could be compressed in any respect, eliminating pointless operations on incompressible recordsdata.
A small hash database remembers these circumstances completely, which considerably hurries up subsequent runs. Compactor additionally reveals (in actual time) how a lot space for storing is definitely freed up by every particular person step, together with a pause and resume operate whereas compression is operating.
Both instruments supply a alternative of compression algorithms. XPRESS4K works the quickest, LZX provides the best discount. Especially in recreation directories or with software program corresponding to Visual Studio, Adobe merchandise or SDKs, house financial savings of 40 to 60 per cent could be achieved with LZX. The developer of Compactor paperwork typical outcomes instantly on GitHub – from 2.4 GB to 1.4 GB for AI War 2 or from 9.6 GB to 4.7 GB for Visual Studio.
It is essential to notice that the applications stay absolutely useful because the compression is clear. All recordsdata could be opened or executed as traditional with out having to be decompressed first.
However, you must notice that sure codecs corresponding to SQLite databases or digital machines don’t harmonize properly with Windows compression. DirectStorage-based video games below Windows 11 also needs to be excluded, because the decompression step cancels out the benefit of the direct connection to the GPU. If you wish to be on the protected facet, use the built-in exclusion lists and test all crucial applications after the primary run. System folders corresponding to “C:Windows” are robotically ignored.
Both CompactGUI and Compactor are transportable and don’t require set up. For Compactor, we suggest the 64-bit model instantly from the GitHub launch space. After the primary begin, the software can be utilized with out logging in, all processes run regionally. Compactor compresses reliably, shortly and with minimal CPU load – even on older methods.
Windows 11 with out ballast: utilizing Tiny11 appropriately
Tiny11 is a modified Windows 11 set up with out the necessity for TPM, an internet account and bloatware. The newest model primarily based on Windows 11 24H2 makes use of solely 3.5 GB with LZX compression, lower than a DVD. You can both receive Tiny11 through the Internet Archive or create your personal ISO with the Tiny11 Builder. This is the way it works:
- Create a brand new listing, corresponding to “C:t11”.
- Download the “Source code (zip)” archive from GitHub.
- Mount the Windows ISO by right-clicking on “Mount”.
- Open “Powershell (Administrator)”.
- Enter: “Set-ExecutionPolicy unrestricted”.
- Change to the listing with “cd t11” and execute: “.tiny11maker.ps1”.
- Enter the drive letter with out “:” (e.g. “E”).
- In the subsequent step, choose “Windows 11 Pro” (e.g. possibility 5).
- You will then discover the brand new ISO below “C:t11tiny11.iso”.
Copy this to a USB stick utilizing Rufus. Important: Deactivate all settings within the “Windows user experience” dialogue. Install the system offline to create an area account.
WinUtil: Preconfigured pictures with minimal effort
If you don’t simply wish to slim down Windows, however wish to begin it fully preconfigured and with none setup procedures, you should use WinUtil by Chris Titus. The software creates automated minimal pictures with an area account, and not using a TPM test, with out on-line connection and with solely half the reminiscence necessities of an everyday Windows.

Thomas Joos
Even extra radical: Tiny11 Core and slimmed-down VHD installations
The Core model of Tiny11 additionally removes Windows Defender, Windows Update and restoration mode. Activate this profile with “.tiny11coremaker.ps1”. This variant is extraordinarily light-weight, however can’t be up to date.
Alternatively, set up Windows instantly on a digital laborious disk (VHD). The WinNTSetup software creates a bootable VHD that you should use like a traditional system, best for experiments.
You can even run the Win11Debloat software. It particularly removes apps corresponding to Xbox, Onedrive, Cortana or Edge. If you wish to go even additional, use Win Reduce. Here, particular person system folders corresponding to “WinSxS” or “System32” could be tremendously shrunk, however watch out because the system can now not be up to date afterwards. The configuration is carried out through textual content recordsdata within the format “remove-” and “keep-“.
Note: this process is simply appropriate for specialists or check environments.
Win10XPE and PEbakery: Build minimal Windows your self
If you wish to begin an ultra-light Windows with out set up constraints and with transportable apps, Win10XPE is the suitable alternative. The mission is configured utilizing the PEBakery software. The objective is an ISO file that runs fully in RAM, best for emergency use or outdated {hardware}.

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For desktop integration, place transportable equipment corresponding to Firefox or LibreOffice in “Customx64IsoRootPrograms”. Optionally, mount the goal folder as drive Y through “CDUsb.y”. The ISO could be examined through VirtualBox or written to USB with Rufus.
Reinstall Windows with out ballast, legally
If you wish to fully do and not using a personalized model, use NTLite. The software hundreds the ISO, removes apps, companies and language packs and provides updates or drivers if required. It then creates a brand new, clear ISO. This offers you a authorized Windows setup, personalized precisely to your necessities.
WinScript provides a graphical interface with capabilities for app elimination, optimization of knowledge safety, efficiency, and gaming choices. Select “Debloat”, take away Candy Crush, Xbox Game Bar or Feedback Hub. Under “Privacy” and “Telemetry”, you’ll be able to deactivate diagnostic transmissions, promoting IDs and different background companies. The software program creates a restore level earlier than each motion.
Further ideas with a direct impact
- Remove the hibernation file with “powercfg -h off” to save lots of as much as 4 GB.
- Move the swap file to a different drive with “sysdm.cpl ,3”.
- Reduce the system safety reminiscence with “sysdm.cpl ,4” → “Configure”.
- Avoid deduplication of updates by switching off the switch optimization below “Windows Update” → “Advanced options” → “Transfer optimization”.
This article initially appeared on our sister publication PC-WELT and was translated and localized from German.