Forum Discussion
Dustinkin
Jun 09, 2026Copper Contributor
How can I reduce JPEG file size in KB on Windows 11 without losing quality?
I have hundreds of JPEG images on my Windows 11 PC that I need to make smaller in file size (KB). The images are currently too large to upload to a website and email, and I plan to reduce their size...
Yarisyoyo
Jun 09, 2026Bronze Contributor
If you don’t want to use a third-party program, you can use the built-in image compression feature in the Photos app that comes with Windows 11 to directly reduce jpeg file size in kb on Windows 11.
How to Reduce JPEG Files Size in KB on Windows 11
- Open the JPEG image using the Photos app in Windows 11.
- Click the three-dot icon at the top of the window.
- Select “Resize picture” from the menu.
- Adjust the image quality and dimensions in the pop-up window.
- Set the quality slider to about 80%.
- If the file size is still over 100 KB, lower the percentage for both width and height, for example, to 70%.
- Click Save to generate the compressed file.
Disadvantages
- Supports only single-image processing; not suitable for batch compression
- Lacks professional compression parameters
- No dedicated compression preset options
For simple JPEG compression needs, using the system's default app is a convenient option.
Notes
- After saving, please check the final file size and image quality.
- Avoid reducing the resolution too much to prevent the image from becoming blurry.
- Keep the original file for backup purposes.