Compress PNG Online Free
PNG compression reduces file size by optimizing the PNG format's lossless compression. PNG files can typically be reduced by 30-80% depending on the image content. Images with large solid color areas compress better than complex photographs.
Last updated: 2026
Frequently Asked Questions
What is image compression?
Image compression reduces the file size of an image by removing redundant data while trying to maintain visual quality. This makes images load faster on websites and take up less storage space.
Will compression reduce my image quality?
Our tools use smart compression algorithms that significantly reduce file size with minimal or no visible quality loss. You can adjust the compression level to balance between size and quality.
What formats can I compress?
We support 17+ image formats including PNG, JPG, WebP, AVIF, GIF, SVG, BMP, TIFF, HEIC, PSD, ICO, TGA, CUR, PPM, PGM, PBM, and WBMP.
How to Compress PNG Online
Upload your PNG image
Click the upload area or drag and drop your PNG file. You can also paste an image from your clipboard.
Adjust compression
Use the quality slider to balance between file size and image quality. Lower quality means smaller file size.
Download compressed image
Click download to save your compressed image. The compression happens instantly in your browser — your file never leaves your device.
Frequently Asked Questions
What is image compression?
Image compression reduces the file size of an image by removing redundant data while trying to maintain visual quality. This makes images load faster on websites and take up less storage space.
Will compression reduce my image quality?
Our tools use smart compression algorithms that significantly reduce file size with minimal or no visible quality loss. You can adjust the compression level to balance between size and quality.
What formats can I compress?
We support 17+ image formats including PNG, JPG, WebP, AVIF, GIF, SVG, BMP, TIFF, HEIC, PSD, ICO, TGA, CUR, PPM, PGM, PBM, and WBMP.
Is my data safe when compressing images?
Yes, all compression happens directly in your browser. Your images are never uploaded to our servers, ensuring complete privacy and security.
How much can I compress a PNG file?
PNG files can typically be reduced by 30-80% depending on the image content. Images with large solid color areas compress better than complex photographs.
Will compressing PNG remove transparency?
No, our PNG compressor preserves alpha channel transparency. You can compress PNG files with transparent backgrounds without losing this feature.
What's the difference between lossy and lossless PNG compression?
Lossless compression reduces file size without any quality loss. Lossy compression achieves higher compression ratios by removing some image data, which may cause minimal visual changes.
Why are my PNG files so large?
PNG files are large because they use lossless compression and store transparency data. They're ideal for graphics with few colors but can be unnecessarily large for photographs.
Should I convert PNG to JPG for smaller files?
If your image doesn't need transparency, converting to JPG can significantly reduce file size. Use our PNG to JPG converter for photographs without transparent backgrounds.