Top Alternatives to ImageOptim

PhotoBulk is a powerful yet simple bulk image editor for macOS. It allows users to perform multiple editing operations on hundreds or thousands of images simultaneously, including watermarking, optimization, resizing, and renaming, all through an intuitive drag-and-drop interface.

ImageMagick is a powerful, free, and open-source software suite designed for comprehensive manipulation of both raster and vector images. It offers a vast array of tools for displaying, converting, editing, and processing image files, accessible primarily through a compelling command-line interface.

RIOT (Radical Image Optimization Tool) is a lightweight and free image optimizer designed for effortless image compression and batch processing.

Phatch is a powerful yet user-friendly batch image processor that simplifies repetitive image editing tasks. Its intuitive drag-and-drop interface and extensive action library make it ideal for photographers, web designers, and anyone needing to process large volumes of images efficiently.

PNGGauntlet is a free Windows application designed to optimize PNG images, making their file sizes significantly smaller without any loss in quality. It achieves this by combining prominent compression tools like PNGOUT, OptiPNG, and AdvPNG into a user-friendly interface.

FileOptimizer is a robust utility for lossless file size reduction, supporting a vast array of formats including popular image, document, and archive types. It leverages various optimization techniques to shrink files without compromising quality, and supports batch processing for efficient workflow.

JPEGmini is an intelligent photo optimization software that drastically reduces the size of JPEG images without compromising quality. Utilizing a unique patented technology, it helps photographers and web developers save disk space, speed up websites, and improve image sharing efficiency.

OptiPNG is a powerful command-line utility designed for lossless optimization of Portable Network Graphics (PNG) image files. It effectively reduces file sizes without sacrificing image quality by intelligently recompressing the image data and removing unnecessary metadata.

PngOptimizer is a lightweight and portable utility designed to optimize PNG images by removing unnecessary metadata and data chunks, resulting in smaller file sizes without compromising image quality. It supports drag-and-drop functionality for ease of use.

Caesium is a powerful and user-friendly image compression software designed to reduce the file size of your images without significantly impacting visual quality. It supports various image formats and offers batch processing capabilities for efficient workflows.

Optimus.io is a powerful image optimization service designed to reduce image file sizes without compromising visual quality, significantly improving website performance and loading speeds.

GraphicsMagick is a powerful and efficient open-source software suite for image processing. Designed for command-line use and integration into scripts and applications, it provides a comprehensive set of tools for manipulating, converting, and performing various operations on image files in numerous formats.