pngquant is a command-line utility and a library for lossy compression of PNG images.
- Image Optimizer
- Free • Open Source
- Mac
- Windows
- Linux
pngquant is a command-line utility and a library for lossy compression of PNG images.
XnShell is a free File Explorer extension that installs a number of image-related tools in the right-click context menu, including a thumbnail preview, image conversion to a wide variety of formats, image resizing, editing image IPTC...


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.

Optimage is an advanced image optimization tool to compress images without losing quality at highest compression density. It supports all popular image formats including JPEG, PNG, GIF and PDF.

Unlock the true potential of your Webflow sites with Optily - the ultimate time-saving solution that effortlessly optimizes your CMS images, boosting performance.

Curtail (previously ImCompressor) is a useful image compressor, supporting PNG and JPEG file types. It support both lossless and lossy compression modes with an option to whether keep or not metadata of images. It is inspired by .

SVGOMG is SVGO's Missing GUI, aiming to expose the majority, if not all the configuration options of SVGO.

Advanced tool supporting lossy, lossless, and archival compression, page manipulation, merging, splitting, and PDF-to-image conversion, all offline.

JPEGmini is a patent-pending photo recompression technology, which significantly reduces the size of photographs without affecting their perceptual quality. The technology works in the domain of baseline JPEG, resulting in files that are fully compatible with any browser, photo...
Image Normalizer is a cross-platform command-line batch-processing tool that resizes and compresses images, transforming each image by:

DjVuLibre is an open source (GPL'ed) implementation of DjVu, including viewers, browser plugins, decoders, simple encoders, and utilities.

iLoveIMG is an online service to work with images completely free and easy to use. Compress images, resize, crop, convert and much more!.

Pixillion is a photo and image conversion software to convert image files between gif, jpg, bmp, tif, png, pdf and much more. Before converting your file Pixillion allows you to preview the image alongside the current image parameters.

ShortPixel is arguably the top WordPress image optimization plugin: simple to set up, it can automatically optimize both your old and new images, as well as PDF files.

HitPaw Compressor helps to compress videos and images without degrading the quality while saving spaces on your devices and improving transmission efficiency.

Imagery is one of the most powerful tools you have to make a sale or get your message across. With imgix, you can give your customers a high-quality, compelling brand experience at the speed they expect, no matter what device or platform they're on.
Trimage is a cross-platform GUI and command-line interface to optimize image files via optipng, advpng and jpegoptim, depending on the filetype. All image files are losslessy compressed on the highest available compression levels.

Minuimus is a file optimizer utility script: You point it at a file, and it makes the file smaller without compromising the file contents.
Kingshiper Video Compressor is a professional video and GIF compression tool that allows you to compress video and GIF files in seconds. It offers various compression methods and customizable compression levels.

NXPowerLite is a lightweight, super simple, easy to use file compression tool for PDFs, images, documents without losing quality. It works fast, integrates with Windows Explorer, Supports batch processing—perfect for freeing up space, speeding up emails, and reducing upload times.

Transform your images from MB to KB effortlessly with ImageMinify! Created by a dedicated developer, this user-friendly app compresses image files while maintaining their quality, making it perfect for anyone looking to reduce file size without sacrificing clarity.



CompressImage.io lets you compress your jpg and png images to reduce image file size by up to 90%. Its totally private, your images are not sent to any servers. The compression process happens in the browser which makes it very fast.

AdvanceCOMP is a collection of recompression utilities for your .ZIP archives, .PNG snapshots, .MNG video clips and .GZ files.