Windows
How to Compress Files on Windows
Windows can compress files into a ZIP archive without installing anything, using the built-in Send to > Compressed (zipped) folder command.
To compress files on Windows, select them in File Explorer, right-click, choose Send to > Compressed (zipped) folder, and Windows creates a .zip archive in the same location. This works on both Windows 10 and Windows 11 with no extra software.
Steps
- 1Select the files or folderClick the first item, then Ctrl+click or Shift+click to select more, or select an entire folder.
- 2Right-click the selectionThis opens the context menu.
- 3Choose Send to > Compressed (zipped) folderWindows creates a new .zip file next to the originals, named after the first selected item.
- 4Rename the archive if neededThe new ZIP file's name is editable immediately after creation, just like any new file.
Choosing a format
The built-in Send to command only produces ZIP archives. ZIP is the safest default because it opens on virtually every device without extra software. If you need higher compression ratios, encryption stronger than ZIP's legacy option, or RAR specifically, you'll need a third-party tool like WinRAR or 7-Zip — see RAR vs ZIP for Windows users for when that trade-off is worth it.
What compresses well — and what doesn't
- Text, documents, spreadsheets, and code compress well, often shrinking to a fraction of their original size.
- Photos (JPEG), videos, and music (MP3) are already compressed by their own format and typically shrink very little, sometimes not at all.
- Mixed folders compress somewhere in between, depending on how much of the content is already-compressed media.
Verifying the archive
Before deleting the originals, double-click the new ZIP file to open it in File Explorer's built-in viewer and confirm every expected file is listed with a reasonable size. For a full check, extract it to a temporary folder and compare file counts — see how to extract ZIP files on Windows 11.
For step-by-step ZIP creation specifically on Windows 11's right-click menu, see how to create a ZIP file on Windows 11. For a broader, cross-platform look at compression, see how to compress files and what is file compression.
Frequently asked questions
Does Windows have a built-in way to compress files?
Yes. Right-click any selection and choose Send to > Compressed (zipped) folder to create a ZIP archive with no extra software.
Can I compress files into a RAR instead of a ZIP?
Not with Windows' built-in tool, which only creates ZIP files. Creating a RAR archive requires WinRAR specifically.
Why didn't my photos folder get much smaller after compressing?
Photos, videos, and music are already compressed internally, so a general-purpose archiver can't shrink them much further.
Is it safe to delete the original files after compressing?
Only after verifying the archive opens correctly and contains everything expected — open it and check the file list first.
Related guides
- How to Compress FilesCompressing files well means picking the right format and settings for what you're compressing, not just clicking the highest setting available.
- How to Create a ZIP File on Windows 11Windows 11 creates ZIP files with a single right-click command: Compress to > ZIP file, no extra software required.
- How to Extract ZIP Files on Windows 11Windows 11 extracts ZIP files natively through Extract All, but the preview window that lets you browse without extracting causes confusion when people try to work directly from inside it.
- Archive Files on Windows: Complete ReferenceWindows handles ZIP files natively, but RAR support depends heavily on which version of Windows you run and how recently it has been updated.
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