Compress Image by Percentage
Reduce image file size by a chosen percentage while keeping image dimensions intact. Free browser-based compression for JPG, PNG and WebP.
Reduce by 50% with measurable results
Browser-first processing, no watermark, and before/after file-size reporting.
Why use this tool?
- ✓ 10–90% reduction targets
- ✓ custom percentage
- ✓ JPG PNG WebP input
- ✓ batch processing
- ✓ before and after sizes
- ✓ browser-local processing
Common use cases
- • large photos before sharing
- • website image weight reduction
- • storage cleanup
- • upload limits
How to use compress image by percentage
Choose your image
Start with the original file whenever possible.
Set the goal
Use a quality, percentage, destination or upload-size setting.
Process locally
The image is processed in your browser.
Review and download
Compare the result and keep the original as your master copy.
Frequently asked questions
Are my images uploaded?
No. These image workflows process the selected file in your browser during the session.
Can I keep the original image?
Yes. The tools create an optimized copy; keep the original as your master file.
Does 50% mean half the pixels?
No. It is a file-size reduction goal. Pixel dimensions can remain unchanged.
Continue your image workflow
After optimizing an image, use the next tool that matches the actual destination instead of processing the same file repeatedly.
Privacy and file quality
Keep the original image as your master copy. Compression is a trade-off between file weight, dimensions, format and visual detail. MAXScanner shows the resulting file size so you can make that choice from the actual output rather than an estimate.