Tool Optimization
Compress PNG Without Losing Transparency
PNG stores images losslessly, so there is no quality slider like JPG. Large file sizes usually come from screenshots, high-resolution logos, or images with many color fields. The compression tool here can rewrite PNG files, but the biggest size reductions usually come from converting to WebP or reducing dimensions. This page explains the sensible options for different needs. Choose the output format based on where the image will be used.
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Workspace · 100% in your browser
Compress Image
Reduce photo file size for email, forms, and the web without uploading.
Photos are processed on your device. No upload.
- 1 Choose photo
- 2 Adjust
- 3 Download
Choose a photo to start. Files are never sent to a server and are not stored after you close the page.
Everything runs in your browser. Photos are never sent to a server.
Quick guide
How it works Compress PNG Without Losing Transparency
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Open the PNG and check its contents
Choose a .png file from your device. Note whether the image has transparent areas, because that determines a safe output format. Ordinary photos without transparency can be converted to JPG or WebP to make them much lighter.
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Choose a suitable format
For a logo that will sit on a colored background, keep PNG or choose WebP, which supports transparency. For a screenshot you plan to share, JPG may be the smallest option, but transparent backgrounds will turn white.
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Download and compare
Save the result and open it in the target app. Check logo edges, small text, and transparent areas. If the size has not dropped enough, reduce the image dimensions first.
FAQ
Frequently asked questions
Why does PNG not shrink much?
PNG uses lossless compression that preserves every pixel. Without changing the format or dimensions, savings are limited. For a large reduction, convert to WebP or lower the resolution.
Is transparency lost when compressing PNG?
No, as long as the output format stays PNG or WebP. JPG does not support transparency and will fill empty areas with solid white.
When should PNG be converted to WebP?
When the image is used on a modern website and file size matters. WebP is usually smaller, but check that the target application supports it before switching.
Is PNG suitable for photos?
It can be, but the file is large. For ordinary photos uploaded to the web or social media, JPG or WebP saves more space.
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