Compress PNG Online — Reduce File Size by Up to 30-70%
Compress PNG files online instantly. Reduce .png file size by 30-70% with no quality loss. Batch compress 100+ files. No signup, no watermarks.
Batch Settings
About PNG Compression
PNG (Portable Network Graphics) uses lossless compression — meaning your compressed PNG retains every single pixel of the original. This makes PNG compression fundamentally different from JPG compression: instead of discarding visual data, the algorithm finds more efficient ways to encode the same data.
CocoConvert's PNG optimiser uses quantisation techniques to reduce the colour palette from millions of colours to 256 (PNG-8) when appropriate, dramatically reducing file size while keeping the image visually identical. For images that need full colour depth, lossless recompression is applied.
PNG is the format of choice for screenshots, logos, UI elements, and any image with sharp edges, text, or transparency. After compression, transparency is fully preserved.
Typical PNG compression reduces file size by 30-70% — even more for simple graphics with large areas of solid colour.
How to Compress PNG
- 1
Upload your PNG file
Drag and drop your .png file into the upload area, or click to browse. Batch upload is supported.
- 2
Adjust compression settings
Use the quality slider to control the compression level. Lower values produce smaller files.
- 3
Click "Compress"
CocoConvert compresses your PNG file using optimised image encoding.
- 4
Download the compressed PNG
Your smaller .png file is ready. Typical reduction: 30-70%.
Compression Tips
PNG
.png file • Image
PNG compression is lossless by default. Reduce dimensions for maximum savings.
| Extension | .png |
| MIME Type | image/png |
| Category | Image |
Frequently Asked Questions
What are the limits for PNG compression?
CocoConvert lets you compress PNG files with no signup required. You get 5 files per hour (up to 250 MB each) on the starter tier. Pro users get 100 files per hour and 5 GB per file.
How much can I reduce PNG file size?
Typical PNG compression reduces file size by 30-70%, depending on the original file and quality settings. Tip: PNG-8 for simple graphics, PNG-24 for photos with transparency.
Does compression affect PNG quality?
CocoConvert gives you full control over the quality-size trade-off. Higher quality settings preserve more detail; lower settings produce smaller files. For lossless formats, compression is always bit-for-bit identical.
Is my PNG file secure?
Absolutely. Files are processed on isolated servers in Germany, encrypted in transit via TLS, never analysed or shared, and permanently deleted within 24 hours.
Can I batch compress multiple PNG files?
Yes! You can compress up to 5 files per hour on the starter tier. Pro users get 100 files, Business API users get 200. All files are processed in parallel.