Image Optimizers

File Converter is a very simple tool which allows you to convert and compress one or several file(s) using the context menu in Windows Explorer.

ImageMagick is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (about 100) including GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF, and DPX.

Caesium Image Compressor lets you compress your pictures up to 90% without visible quality loss. Providing a simple yet effective interface with a real-time preview and multiple image processing at the same time, everyone will be able to reach the best result.

XnConvert is an easy image converter for graphic files, photos and images available on Windows, MacOSX and Linux.

ImageOptim is excellent for publishing images on the web (easily shrinks images “Saved for Web” in Photoshop). It's useful for making Mac and iPhone/iPad applications smaller (if you configure Xcode to allow better optimization).

Compress images, videos, and PDFs locally with batch processing, full privacy, quality preservation, and drag-and-drop workflow, all on your Mac.

FileOptimizer is a lossless file size optimizer supporting AIR, APK, APNG APPX, BMP, CBZ, DOCX, DLL, EPUB, EXE, GIF, GZ, ICO, JAR, JPEG, MNG, MP3, MPP, PNG, PPTX, ODT, OGG, OGV, PDF, PUB, SCR, SWF, TIF, VSD, WEBP, XAP, XLSX, and ZIP file formats among others.

Optimize images efficiently supporting PNG, JPEG, WebP, and SVG with flexible compression settings offering safe mode to prevent data loss.

Compress images with pixel-perfect precision using advanced algorithms that preserve quality while dramatically reducing file sizes.

Saving images for web/email/other media with the best compression ratio and quality is a difficult task if you don’t have the right tools. Choosing the right format then choosing the right parameters are the key factors of smaller files.

Compress and compare images with different codecs, right in your browser.

Switcheroo is designed to give you a simple, quick, and easy-to-use tool to convert and manipulate your images in whatever way you like. It is built on top of the most advanced image editing libraries, ImageMagick.

Simple Video, Photo & Audio Editing Tools in one app. Pimosa lets you convert, edit and enhance video, photos and music files easily. Batch processing for faster work. simple tools for everyone.

Reduce PNG file sizes by 50-80% using smart compression while maintaining transparency. TinyPNG optimizes images to speed up websites and save bandwidth.

Batch convert, rename, and edit images with resizing, cropping, color and watermark options, sequential renaming, preview, and support for major formats.

Efficient file API with real-time processing, CDN delivery, multi-source uploads, AI ops, EXIF-based rotation, and robust security features.

Tool for optimizing SVG files.

-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.

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.

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.

Image Tuner is a free batch image resizing, renaming, conversion and watermarking software with a super-intuitive and straightforward interface.

Resize, compress, and convert images with batch support. Integrated shell access for quick editing, high-resolution settings, custom watermarks, and PDF conversion.

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.

GraphicsMagick is the swiss army knife of image processing. Comprised of 282K physical lines (according to David A. Wheelers SLOCCount) of source code in the base package (or 952K including 3rd party libraries) it provides a robust and efficient collection of tools and libraries...

pngquant is a command-line utility and a library for lossy compression of PNG images.