Private browser image workflow
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, before/after reporting, plus ZIP and PDF export for finished image batches.
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
A percentage is a byte goal, not a promise about visual quality
Reducing a file by 50% means targeting roughly half the encoded bytes. It does not mean cutting width or height in half, and two different photos can require different quality settings to reach the same percentage.
Use percentage reduction for a relative size goal; use an exact-target tool when a portal specifies a hard KB maximum.
- Compare before and after bytes.
- Inspect fine text, faces and gradients.
- Keep the source file.
How to use compress image by percentage
Choose your image
Start with the original file whenever possible.
Set the real goal
Use the actual quality, percentage, destination or upload rule.
Process locally
The selected image is processed or inspected in your browser.
Review and download
Compare the measurable 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
Choose the next tool because the destination requires it, not because every image needs every optimization step.
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 measurable result so you can make that choice from the output rather than a marketing score.