Compress PNG
Free online PNG compressor with in-browser processing and zero upload. Re-encode and optimize to shrink PNG file size.
About this tool
PNG is a lossless format and files are often much larger than JPG. This tool re-encodes your PNG in the browser to reduce its size, and can also convert it to the much smaller WebP format. Everything runs locally — nothing is uploaded.
How to use
- Click or drag to select a PNG image
- Adjust the compression options as needed
- Compare the file size before and after
- Click download to save the result
FAQ
What is the difference between PNG and JPG?
PNG supports transparency and is lossless — great for icons and screenshots. JPG is smaller but has no transparency — better for photos. If you do not need transparency, converting to JPG or WebP saves a lot of space.
What is the best way to compress a PNG?
PNG itself has limited headroom. The most effective options are reducing dimensions or converting to WebP, which is typically 30%–70% smaller.
Are my images uploaded?
No, everything is processed locally in your browser.
Can I use an iPhone HEIC or HEIF photo?
Yes. HEIC and HEIF photos are decoded locally in supported modern browsers and exported as JPG, PNG or WebP.
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