How to Compress PNG Without Losing Quality
PNG uses lossless compression, which means you can reduce file size without losing a single pixel of quality. FastEdit uses OxiPNG optimization to recompress PNG files with better compression parameters, producing smaller files that are pixel-identical to the original. This guide shows you how to shrink PNG files without any quality loss.
Walkthrough
- 01
Open FastEdit
Go to fastedit.net. No account, no installation. Runs in your browser.
- 02
Drop your PNG file
Drag and drop your PNG image onto the editor. You can drop multiple files for batch compression. Files are processed locally on your device.
- 03
Select PNG as the output format
Choose PNG from the output format menu. Since the output is the same format as the input, the optimization focuses on better compression rather than format conversion.
- 04
Keep PNG output selected
FastEdit runs PNG encoding and OxiPNG optimization automatically for PNG exports. This applies lossless compression to find a smaller encoding for the same pixel data.
- 05
Export
Click Export to download the optimized PNG. Compare the file size. Typical reductions are 10-30% with zero quality loss.
Small things worth checking
- PNG compression is always lossless: the compressed file is pixel-for-pixel identical to the original. You lose nothing by running OxiPNG optimization.
- PNG re-encoding may remove metadata such as text chunks or profiles. Keep the original file separately if that metadata matters.
- For even smaller files with slight quality trade-offs, consider converting to WebP or AVIF instead of keeping PNG. These modern formats offer dramatically better compression.
- Batch compress multiple PNG files at once by dropping them all onto FastEdit. Each file is independently optimized.
- PNGs exported from screenshot tools and design software are often poorly compressed. Running them through OxiPNG can reclaim 15-30% with no visible change.