Compress PNG online. Transparency preserved.
Powered by pngquant lossy colour quantisation, the same algorithm behind TinyPNG. Up to 80% smaller. Nothing uploaded.
Drop your PNG files here
PNG files only · no file size limit · transparency preserved
Three steps. Done in your browser.
Drop your PNG
Drag a PNG file onto the zone or click to browse. No file size limit. Transparency is preserved throughout.
Set the quality level
pngquant runs in your browser via WebAssembly. Higher quality preserves more colour depth with a larger file.
Save your smaller PNG
Typically 40-80% smaller than the original. Transparency preserved. Nothing sent to any server at any point.
Where a smaller PNG makes the biggest impact.
PNG files are losslessly compressed by default, meaning they preserve every pixel exactly. That makes them large. pngquant fixes that without changing the format or losing transparency.
Website performance
Large PNGs are one of the most common causes of poor Lighthouse scores. Compressing logos, icons, and screenshots before uploading to a CMS reduces page weight and improves load times.
App and game assets
Sprite sheets, UI textures, and icon atlases must be compact to minimise bundle size and reduce memory usage on mobile devices. Compressed PNGs load faster and use less RAM.
Logos and branding assets
Brand logos sent over email or embedded in documents are often oversized PNGs. A compressed logo under 100 KB looks identical but loads instantly and reduces document file size.
Screenshots and documentation
Screenshots saved as PNG are often several megabytes. Compressing before embedding into presentations, wikis, or PDFs significantly reduces the final document size.
Email signatures and templates
Large embedded PNGs cause emails to load slowly or get flagged by spam filters. A compressed PNG logo under 50 KB renders instantly in every email client.
Cloud storage and backups
Archiving large volumes of screenshots or design exports? Compression can cut storage footprint by 50-80% with no visible quality loss on screen.
How pngquant compression works under the hood.
Unlike most online tools that upload your file to a remote server, this compressor runs entirely in your browser tab. It loads pngquant as a WebAssembly module, the same open-source algorithm used by TinyPNG, Squoosh, and professional image pipelines. pngquant uses a modified median-cut algorithm to find the optimal 256-colour palette for each image, minimising visible quality loss while dramatically reducing file size.
Alpha-channel transparency is fully preserved throughout the process. Your file never leaves your device. There is no server, no upload, and closing the tab immediately clears all image data from browser memory.