
Uncompressed files can gradually consume gigabytes of space on your Windows PC, often hindering performance and making your storage chaotic without your awareness. Fortunately, compressing files is an effective strategy to reclaim storage space while keeping all your essential data intact.
The Impact of Uncompressed Files on Your PC’s Storage
It’s easy to overlook the massive amount of files accumulating on our PCs. However, as these files multiply over time, you may encounter frustrating alerts about your storage being low.
This can be quite bothersome, and although you might already practice strategies to save storage, you may still find your files occupying more space than necessary. Luckily, Windows provides user-friendly solutions.
Despite the built-in file compression tools available in Windows, many users are unaware of their existence. Instead of seeing them as a hurdle, recognize that file compression can streamline your accessibility while significantly reducing the space they occupy.
Ideal Files for Compression
It’s unnecessary to compress every file on your computer. In fact, compressing frequently-used files can inadvertently lead to slower performance, as Windows needs to decompress them every time you access them.
Instead, prioritize compressing large and rarely accessed files. Here are some excellent candidates for compression:
- Old project folders relevant to work or educational pursuits
- Extensive text files, including logs and spreadsheets
- Collections of photos or videos not currently in active editing
- Installer packages that have been executed but are still needed
- Data backups or exported files held for archival purposes
Also, be cautious; certain formats—like JPEGs, MP4s, and PDFs—are inherently compressed. While you can certainly zip them for organization or sharing, the space gained might be minimal.
How to Effectively Compress Files Using Windows Built-In Tools
Windows supplies two straightforward options for compressing files, and the best part? You won’t need any additional software.
Utilizing NTFS File Compression
This feature functions seamlessly within File Explorer, allowing for on-the-fly compression, meaning you can access files without needing to manually decompress them. To start compressing files with NTFS compression:
- Right-click the desired file or folder and select Properties.
- Click on the Advanced option found under the General tab.
- Check the option that reads Compress contents to save disk space.
- Hit OK, followed by Apply.

Windows will automatically minimize the size of the selected files or folders. You will continue to view and access them the same way as before, but they will occupy less storage space. If you experience a speaking slowdown while accessing those files, you can reverse the process by following the same steps and unchecking the Compress contents to save disk space option.
Creating a ZIP Archive for Files
Another effective method of compression is to create a ZIP archive, especially useful for long-term storage, such as backups, or sharing files with others.
Here’s how to zip files using Windows’ built-in features:
- Right-click the individual file or folder.
- Choose Send to > Compressed (zipped) folder.
- A new.zip file will appear in the same location as the original files.

You can unzip this archive later by double-clicking it and selecting where you want to extract its contents.
Exploring Third-Party Compression Tools
If you seek superior compression options or desire more flexibility over file formats, several exceptional third-party tools exist.
7-Zip is a highly recommended, free tool with various formats, including 7z, ZIP, and TAR, well-known for outstanding compression rates. It’s arguably the best choice for file compression in Windows.
PeaZip is another free option that boasts an intuitive interface while supporting multiple formats. It also includes encryption features for those interested in safeguarding their data.
WinRAR remains popular, although both 7-Zip and PeaZip tend to provide better performance. Although WinRAR’s trial doesn’t expire, showing pop-ups for license purchase can be a point of irritation.
These tools are excellent for compressing bulky folders or when seeking enhanced encryption that Windows alone does not provide.
Avoiding Mistakes in File Compression
Before diving into file compression, it’s prudent to assess which files are consuming the most space. By targeting space hogs, you’ll make your efforts far more efficient.
Additionally, be cautious about the types of files you compress. It’s best to avoid compressing system files, commonly accessed files, or active projects that do not require immediate backup or sharing.
Compressing frequently used files will invariably slow your process down due to the need for decompression during access, potentially hampering your productivity.
Frequently Asked Questions
1. What types of files should I avoid compressing?
It’s advisable to steer clear of compressing system files, frequently accessed documents, and active project folders, as this can detract from your efficiency and workflow.
2. Can I still access compressed files easily?
Yes, you can effortlessly access compressed files. Windows allows you to use the files without manual decompression when using NTFS compression, so they remain readily available.
3. Are third-party compression tools necessary?
While Windows provides effective built-in tools for file compression, third-party software can offer enhanced features, better compression ratios, or additional options like encryption for secure storage.
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