← Back to Tools
Compress PNG without Quality Loss

Optimize PNG Images

Drag & Drop or Click to Upload

Supports JPG, PNG, WEBP, HEIC • Up to 25 files

Compression Mode
Target File Size
Output Format
Resolution Scale

Reduce pixel dimensions for web use. Lower = smaller file & faster loading.

☕ Support PhotoDiet

This tool is 100% free, private, and runs entirely in your browser. If it saved you time, consider supporting the developer!

How to Compress PNG Images Without Losing Quality

PNG Optimization Made Simple

PNG is a popular format because it supports transparent backgrounds and offers lossless quality. However, this also means PNG files can be massive, slow to load on websites, and heavy to share. PhotoDiet uses advanced client-side quantization to reduce PNG file sizes significantly without losing the alpha channel transparency or creating ugly artifacts. It is the perfect balance of file weight and visual quality.

Optimize PNGs in 4 Steps

Frequently Asked Questions

Q: Will the background transparency remain intact?

A: Yes! Our PNG compressor is built to fully preserve the transparency alpha channels so your logos and graphic elements remain transparent.

Q: Can I convert the PNG to WebP to save more space?

A: Yes. If your destination platform supports WebP, you can use our Format converter to save even more space, as WebP compression is typically more efficient than PNG.

Need a different tool or task?

Explore our full suite of local, secure, privacy-first conversion and manipulation utilities.

View All Tools & Tasks Directory