PNG Compressor
Palette quantization (libimagequant, the engine behind pngquant) shrinks PNGs while keeping full alpha transparency, or use the lossless mode.
Select files for PNG Compressor
Drag & drop your files here, or click to browse
Off by default for privacy: camera data and GPS location are removed.
- Lossy mode reduces the image to an 8-bit palette with full alpha transparency (the same technique as pngquant). Lossless mode keeps every pixel.
How to use PNG Compressor
From upload to download in 3 steps.
- 1
Add your files
Choose or drag up to 20 PNG files into the upload area (up to 50 MB each).
- 2
Adjust the settings
Optionally change the method and keep metadata (exif, icc) — the defaults work well for most files.
- 3
Compress and download
Click Compress, follow the progress, and download the result — several files are bundled into one ZIP. Files are deleted from the server automatically afterwards.
Supported formats and settings
- Input formats
- PNG
- Output formats
- PNG
- Limits
- Up to 50 MB per file
- Up to 20 files per job
- Files are deleted automatically after processing
- Method
- Lossy: palette quantization (smallest) and Lossless: maximum zlib compression
- Quantization Quality
- 1–100 %
- Max Colors
- 256, 128, 64, 32 and 16
- Keep Metadata (EXIF, ICC)
- Off by default for privacy: camera data and GPS location are removed.
Why use our PNG Compressor?
Genuine Processing
Real conversions by proven engines — never renamed copies or fake results.
Private by Design
Files are deleted automatically after processing and never used for training.
Free to Use
No account, no subscription and no watermarks on your files.
Frequently Asked Questions
Which file formats does PNG Compressor support?
PNG Compressor accepts PNG files. It produces PNG.
Is there a file size limit?
Each file can be up to 50 MB, and you can process up to 20 files at once. Larger files take longer to upload and process.
What happens to my files?
Files are uploaded only when you start processing. They are stored under random names in a private temporary folder, processed, and deleted automatically shortly afterwards — the exact time is shown with your result — or immediately when you click “Delete files now”. Files are never shared or used for training.
How does PNG Compressor work, and what are its limitations?
Lossy mode reduces the image to an 8-bit palette with full alpha transparency (the same technique as pngquant). Lossless mode keeps every pixel.
Is PNG Compressor free to use?
Yes. PNG Compressor is free, needs no account, and does not add watermarks to your files.
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Vectorize raster PNG logos, icons, and illustrations into scalable SVG vector paths.