image compression Archives - Page 2 of 2

Trimage – cross-platform tool for losslessly optimizing PNG and JPG files

Trimage is an open source cross-platform graphical user interface and command-line interface to optimize image files via optipng, advpng, pngcrush.

Curtail (previously ImCompressor) is an image compressor, supporting PNG, JPEG and WEBP file types.

jpegoptim is a command-line JPEG optimizer supporting lossless and lossy recompression, metadata control, progressive JPEGs and parallel processing.

Oxipng is a multithreaded lossless PNG compression optimizer (CLI and library).

Pngcrush is a free and open source optimizer for PNG (Portable Network Graphics) files. It is a command-line tool.

ZopfliPNG is a PNG optimizer that trades processing time for smaller files using intensive filtering, recompression and colour-type trials.

OptiPNG optimizes PNG files, i.e. reduce their size to a minimum, without losing semantic information.

pngquant compresses PNG images by converting them to efficient 8-bit palettes with alpha transparency, quality controls and configurable dithering.

Lepton is a tool and file format for losslessly compressing JPEGs by an average of 22%.

MozJPEG improves JPEG compression efficiency achieving higher visual quality and smaller file sizes at the same time.

Guetzli is a JPEG encoder that aims for excellent compression density at high visual quality.