Compress & resize
Compress PNG
Screenshots and design exports are the usual PNG heavyweights. This site combines palette quantization with lossless optimization; by default, Smart quality picks settings for each image to keep files as small as it can with barely visible difference — switch to Set quality if you need a fixed value. Everything runs locally in your browser, with no file limit.
How to use
- Drag your PNG files into the dashed box above — a whole batch at once is fine.
- Smart quality is on by default and picks settings for each image — nothing to tune. Need a fixed value? Switch to Set quality in the panel, with a live before/after preview.
- Download individually or as a ZIP. EXIF/GPS are stripped by default for cleaner output.
FAQ
Will my images be uploaded?
Never. All decoding and encoding for PNG compression runs inside your browser via WebAssembly. This site has no image upload endpoint at all, and it works offline.
Is it free? Any limits on file count or size?
Core tools free forever. Core features need no registration and no watermark. PNG compression has no file-count or per-file size limits. Images are processed on your device.
How much smaller can it get?
By default, Smart quality picks settings for each image, keeping files as small as it can with little visible difference — typically 30%–70% smaller (higher-quality, larger originals compress more). Need a fixed value? Switch to Set quality and lower it for even smaller files.
Does it support batch processing?
Yes. Drop dozens or even hundreds of PNG images at once; the memory-budget scheduler processes them locally in a queue. Download individually or as a single ZIP.
Is EXIF metadata or GPS kept in the output?
No, metadata is stripped by default. EXIF and GPS data are removed from the output, so shared files never leak where photos were taken — a privacy feature by itself.
What is PNG quantization, and what if I need strictly lossless?
Quantization reduces the image to a palette of at most 256 colors — it works best on screenshots and logos. By default, Smart quality picks the quantization settings for each image. If the file must stay strictly lossless (fine gradients, further editing), switch to Set quality and turn off PNG quantize for pure lossless optimization.