pngquant is described as 'Command-line utility and a library for lossy compression of PNG images' and is a Image Optimizer in the photos & graphics category. There are more than 50 alternatives to pngquant for a variety of platforms, including Windows, Mac, Linux, Web-based and Android apps. The best pngquant alternative is File Converter, which is both free and Open Source. Other great apps like pngquant are ImageMagick, Caesium Image Compressor, Dinky and XnConvert.
Offers lossless image compression and batch processing with full control for JPEG, PNG, GIF, WebP, SVG, and modern formats on Mac. Fully offline, never uploads files—drag, drop, automate with folders, convert formats, strip metadata, and use reusable custom profiles.
Spain
EU
Using advanced lossy compression, TinyPNG reduces PNG file sizes by 50-80%, preserving full transparency and minimizing quality loss. Ideal for web designers, it increases website speed, saves bandwidth, and offers tools like a Photoshop plugin and API for seamless integration.
NetherlandsEU
Batch image compression for Mac — supports PNG, JPEG, GIF, WebP, SVG, HEIC with local processing, drag & drop, and quality preview.
-Combines PNGOUT, OptiPNG, and DeflOpt to create the smallest PNGs -No image quality is lost — only file size -Converts JPG, GIF, TIFF, and BMP files to PNG -Ultra-configurable
PNGGauntlet is a .NET program that uses Ken Silvermans PNGOUT, OptiPNG and DeflOpt to optimize PNG fil.
United States
OptiPNG is a command-line PNG optimizer that recompresses image files to a smaller size, without losing any information. This program also converts external formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG integrity checks and corrections.
ImgSmaller is a privacy-first image compression tool that lets you compress JPG, PNG, and WebP images directly in your browser. No data leaves your device thanks to our Zero-Upload Mode. If your browser doesn't support this, the image is temporarily uploaded to our server...
RomaniaEU
MAZANOKE is a simple image compressor and converter that runs entirely in your browser. No external uploads, works offline as a web app, and is powered by Browser Image Compression.
YOGA Image Optimizer is a free tool to convert and optimize JPEGs, PNGs and WebP image files. Simply Drag & drop images, click on “Optimize”, and you're done!
Oxipng is a multithreaded lossless PNG compression optimizer in Rust. It can be used via a command-line interface or as a library in other Rust programs.
Experimental, fast Web PNG/JPG optimizer which offer lossless, visually lossless or lossy compression. it performs image reductions over iterations thanks to recursive multi-processing and multithreading systems.
