Caesium Image Compressor
Caesium is a free, open source image compression software for Windows, Mac and Linux. It allows lossless compression of PNG and JPEG files with compression ratios up to 83% smaller than the originals.
Caesium Image Compressor: Free, Open Source Image Compression
Caesium is a free, open source image compression software for Windows, Mac and Linux. It allows lossless compression of PNG and JPEG files with compression ratios up to 83% smaller than the originals.
What is Caesium Image Compressor?
Caesium is a free and open source image compression software for Windows, Mac and Linux operating systems. It specializes in significantly reducing file sizes of JPEG and PNG images with minimal loss of quality or accuracy.
The compression algorithms used by Caesium analyze images and optimize them to achieve impressive compression ratios of up to 83% smaller than the original files. Both lossless and lossy compression modes are available.
Key features include batch processing for compressing multiple images at once, metadata removal options, arithmetic coding for maximum compression, and full retention of chroma channels during RGB to YCbCr transformations. An integrated image viewer allows side-by-side comparisons of original and compressed versions.
Caesium is easy to use with a simple, clean interface focused on efficient and powerful compression. Advanced users can fine tune settings for optimal control over compression versus quality trade-offs. It's frequently updated and ideal for photographers, web designers, app developers, and anyone dealing with large image libraries.
Caesium Image Compressor Features
Features
- Lossless compression of PNG and JPEG files
- Retains full image quality while significantly reducing file size
- Supports batch compression of multiple images
- Available on Windows, Mac and Linux
- Open source software with community support
Pricing
- Free
- Open Source
Pros
Greatly reduces image file sizes without quality loss
Saves storage space and bandwidth
Very easy to use with simple interface
Completely free with no limits
Actively developed and maintained
Cons
Limited to only PNG and JPEG formats
Fewer features than paid alternatives
Slower compression speed than proprietary software
No cloud storage or team collaboration features
Requires some technical skill to install and use
Official Links
Reviews & Ratings
Login to ReviewThe Best Caesium Image Compressor Alternatives
View all Caesium Image Compressor alternatives with detailed comparison →
Top Photos & Graphics and Image Compression and other similar apps like Caesium Image Compressor
Here are some alternatives to Caesium Image Compressor:
Suggest an alternative ❐
TinyPNG
TinyPNG is an online application that can greatly reduce the file size of PNG and JPEG images through compression. It uses smart lossy compression techniques to reduce file sizes of images by up to 80%, all while preserving the visual quality.The service is completely web-based, requiring no software downloads or...
Free Image Convert and Resize
Free Image Convert and Resize is a free online tool that allows you to easily convert images between various formats and resize them without losing quality. Some key features include:Convert images between JPG, PNG, GIF, TIFF, WEBP and other popular formatsBatch convert multiple images at onceResize images to custom dimensions...
FastStone Photo Resizer
FastStone Photo Resizer is a comprehensive photo editing and management software that enables users to view, organize, touch-up, retouch and optimize a large collection of images quickly and easily. It allows you to:Convert images between more than 19 different formats including RAWResize photos for posting on the web or emailingAdd...
BIMP
BIMP is a free, open source photo editing application for Windows. It stands for Batch Image Manipulation Program.Some key features of BIMP include:Batch processing tools to edit multiple images at once - resize, crop, rotate, flip, color adjustments, add text/watermark, rename files, and moreSupports common image formats like JPG, PNG,...
Converseen
Converseen is a free, open source image conversion and resizing tool for Windows, Linux, and Mac. It can read over 100 different image formats and convert between them easily. Some of the most popular supported formats include JPG, PNG, GIF, BMP, TIFF, TGA, CR2, and many more.One of the standout...
TinyJPG
TinyJPG is an online image compression and optimization tool that allows you to reduce JPEG file sizes significantly without losing perceived image quality. It was launched in 2017 and uses smart lossy compression techniques to optimize images, particularly for use on websites and other online applications.One of the main benefits...
RIOT - Radical Image Optimization Tool
RIOT (Radical Image Optimization Tool) is a free and open-source image optimizer that can significantly reduce the file size of images to improve page load speeds. It works by losslessly compressing images through various optimization algorithms including converting to more efficient formats like WebP when possible.Some key features of RIOT...
ImageOptim
ImageOptim is a free and open-source image optimization tool for Mac OS X. It can losslessly optimize images by removing extra metadata and making compression more efficient. This allows images to load faster in web browsers without losing any visual quality.ImageOptim works with the most common image formats including JPG,...
PngOptimizer
PngOptimizer is a free, open source utility for optimizing PNG images. It analyzes PNG files and losslessly compresses them to reduce file size, without losing any information or quality. The optimized images will look visually identical but take up less storage space and load faster.PngOptimizer works by running multiple optimization...
Phatch
Phatch is a free, open source photo batch editing software for Windows. It provides an easy way to perform common editing tasks on large groups of images.Some of the key features of Phatch include:Batch process large numbers of photosResize, rename, crop, rotate imagesAdjust contrast, brightness, saturationApply watermarks, vignettes, bordersConvert between...
FileOptimizer
FileOptimizer is a free desktop application for Windows, Mac and Linux that can significantly reduce the size of images and documents without affecting their quality or resolution. It works by stripping out excess metadata and optimizing compression to shrink files sizes.For images, FileOptimizer supports JPEG, PNG, GIF, TIFF and BMP...
PhotoBulk
PhotoBulk is a free, open-source software application designed for batch processing large numbers of digital photos. It provides a simple interface that allows photographers to perform common editing tasks like resizing, renaming, rotating, cropping, adding watermarks and more on entire folders of images in one go.Some key features of PhotoBulk...
Fast Image Resizer
Fast Image Resizer is a free image resizing utility for Windows that allows you to resize batches of photos with just a couple of clicks. It has an intuitive drag-and-drop interface that makes it easy to add hundreds of photos and resize them all at once.Some key features of Fast...
ImBatch
ImBatch is a free, open-source batch image processing application for Windows. It provides an easy way to automate tedious editing tasks like resizing, cropping, rotating, converting formats, applying filters, watermarks, and more to large collections of images.Some key features of ImBatch include:Supports the most common image formats like JPG, PNG,...
ReaConverter
ReaConverter is software designed for converting image, document, spreadsheets, PDF, and presentation files between over 300 file formats. It provides a graphical interface as well as command line capabilities that enable automation and integration into other applications.Some of the key features of ReaConverter include:Support for batch conversion of multiple filesImage...
Picture Resizer
Picture Resizer is an easy-to-use desktop application for Windows that provides extensive image editing and batch processing capabilities for resizing photos. With an intuitive drag-and-drop interface, it allows you to quickly add hundreds of photos, apply sizing edits to all of them at once, and export high-quality versions effortlessly.Some key...
E-mage
E-mage is an open-source ecommerce platform built using PHP and MySQL. It was originally created as a fork of AbleCommerce to provide an open-source alternative to commercial systems like Magento or Shopify.Key features of E-mage include:Product catalog management with support for categories, reviews, images, configurable/downloadable products etc.Order and customer management...
Oxipng
Oxipng is an open source command line utility for optimizing PNG image files. It was created to overcome limitations in the PNG compression utilities available at the time of its release in 2010.Oxipng works by re-compressing PNG files to reduce file size as much as possible without losing image quality...
IMGCentury Image Compressor
IMGCentury Image Compressor is a powerful yet easy-to-use image optimization tool. It is completely free and works right in your web browser without needing to install any software. IMGCentury uses advanced algorithms to compress JPEG, PNG, GIF and WebP images while maintaining excellent image quality.Some key features of IMGCentury Image...
WinLep
WinLep is an open-source application developed by the WinLep project that allows Windows users to install and run Linux distributions and applications directly within Windows, without requiring dual-booting or virtualization. It provides deep integration of Linux functionality into Windows, making it easy to leverage the strengths of both operating systems...
Dropresize
Dropresize is a free, easy-to-use image resizing and conversion application for Windows. It allows users to rapidly resize entire batches of photos with a simple drag-and-drop interface.To use Dropresize, you simply drag your image files and drop them onto the Dropresize window. The software will then display resize options, allowing...
Optimage
Optimage is an open-source command line image optimizer that can significantly reduce the file size of JPEG, PNG, GIF and WebP images with no loss of image quality (lossless compression). It works by removing unnecessary metadata and optimizing encoding methods.Optimage can achieve compression ratios of up to 80% for JPEG...
Fotosizer
Fotosizer is free image resizing software for Windows that allows easy and quick batch resizing of multiple photos at once. It has an intuitive interface with various options to customize the output size of your images.You can resize by percentage, by absolute pixel dimensions, by common print sizes, or by...
Squoosh
Squoosh is a free, open-source web application created by Google engineers that allows users to compress images directly in the browser without needing to install any software or plugins. It was launched in 2018 with the goal of making image optimization fast, easy and accessible to everyone.Squoosh utilizes the power...
JPEG Archive
JPEG Archive is a free, open source image viewer, editor and batch conversion software for JPEG images. It provides a simple and easy to use interface to view, edit and convert JPEG photos.With JPEG Archive you can:Quickly view JPEG images, with support for high resolution photosCrop, rotate and resize JPEG...
Imagecompressor.io
Imagecompressor.io is a free web-based image compression tool that allows you to reduce image file sizes right in your browser. It works by removing EXIF data and applying lossy compression algorithms to shrink images with minimal loss in visual quality.With Imagecompressor.io, you can compress JPG, PNG, GIF and SVG image...
Pinga
Pinga is an open source website and application monitoring software. It provides easy to configure uptime monitoring, page speed insights, HTTP/S site monitoring, and alert notifications when your site experiences problems.Key features include:Uptime monitoring - Pinga will continually check websites and web services to ensure they are up and meeting...
IResize
iResize is an easy-to-use image resizing and optimization utility for Windows. It provides an intuitive interface for batch processing images by resizing, renaming, and compressing them.With iResize, you can easily prepare your images for sharing online or sending via email. It supports the most common image formats like JPG, PNG,...
Mass Image Compressor
Mass Image Compressor is a powerful yet user-friendly tool for resizing and compressing images in bulk. It is completely free for personal and commercial use.With simple drag-and-drop functionality, you can easily add dozens or hundreds of images at once to be processed. The tool allows you to choose the compression...
Simple Image Reducer
Simple Image Reducer is a lightweight, easy-to-use image compression software that allows you to reduce image file sizes without compromising quality. It works by selectively decreasing the number of colors in an image and optimizing compression settings to shrink files down to the smallest possible size.This free program supports the...
Photo Size Optimizer
Photo Size Optimizer is an easy-to-use application designed to help you reduce the file size of images on your computer without sacrificing visual quality. It can optimize JPG, PNG and GIF files individually or in batches.The software provides a simple drag-and-drop interface for adding photos you want to compress. It...
Photo Batch
Photo Batch is a powerful Windows-based software application designed specifically for batch processing digital photos. With Photo Batch, photographers and graphic designers can automate time-consuming editing tasks like resizing, cropping, rotating, color correction, watermarking, etc. and apply them to hundreds of photos in one go.Key features of Photo Batch include:Intuitive...
Pngquant
pngquant is an open source command-line utility for optimizing PNG images by lossily reducing their color palettes to the most common 256 colors. It was designed to achieve maximum file size reduction while preserving full alpha transparency and perceptual visual quality.pngquant works by analyzing images and selecting colors that are...
Batch Images
Batch Images is a free and open source image editing application for Windows. It allows users to perform batch operations on multiple images to edit them quickly and efficiently.Some of the key features of Batch Images include:Batch resize images by specifying dimensions, scaling percentage, etc.Rotate or flip images in 90,...
Flexxi Image Resizer
Flexxi Image Resizer is an easy-to-use Windows application designed specifically for resizing digital images. It provides a streamlined workflow that allows you to batch resize entire folders of photos, images, and other digital media files with just a few clicks.Some key features of Flexxi Image Resizer include:Batch resize - Easily...
Ralpha Image Resizer
Ralpha Image Resizer is a free image processing application for Windows that allows batch resizing, renaming, format conversion, and adding watermarks to multiple images at once. It provides an intuitive and easy-to-use interface to automate tedious image editing tasks.With Ralpha Image Resizer, you can:Resize photos in bulk to specific pixel...
Icecream Image Resizer
Icecream Image Resizer is a powerful yet easy-to-use image editing application for Windows. It provides a complete set of tools to edit your images quickly and efficiently.With an intuitive drag-and-drop interface, you can easily resize, convert, rename, crop, rotate, flip, add text/watermark, and adjust your images. Whether you need to...
Assetizr
Assetizr is a cloud-based IT asset management and software license optimization platform designed to help organizations track and manage their IT hardware and software assets. Key features include:Detailed visibility into all IT assets including computers, servers, networking equipment, peripherals, SaaS applications, on-premise software, and moreAutomated discovery and inventory of hardware...
Mini-Compressor
Mini-Compressor is a free image optimization tool for Windows that allows you to compress image files like JPG, PNG and GIF to reduce their size. It can preserve image quality while making the files smaller, saving storage space and bandwidth.Some key features of Mini-Compressor:Intuitive drag and drop interface - simply...
PngCrushrrr
pngCrushrrr is an advanced PNG compression utility that optimizes images using cutting-edge techniques for maximum filesize reduction. It was designed from the ground up to leverage the full compression potential of the PNG format.The software carefully analyzes each PNG and applies customized crushing algorithms based on the specific pixel characteristics...
Leanify
Leanify is a software that helps organizations optimize their workflows and business processes by applying lean management principles. It allows users to visually map out existing processes from end-to-end, identifying wasted steps and inefficiencies. The software provides analysis of process metrics such as cycle times, quality, and costs.Key features of...
Easy Image Modifier
Easy Image Modifier is a user-friendly image editing application for Windows. It provides a wide range of basic yet essential image editing tools to enhance photos quickly without professional skills.With an intuitive interface, Easy Image Modifier makes it easy to batch process images to resize, crop, rotate, flip, apply filters,...
Image Converter Plus
Image Converter Plus is an easy-to-use image conversion and editing application for Windows. With an intuitive interface and powerful conversion engine, it enables quick and simple batch conversion between over 100 major image file types including JPEG, PNG, GIF, BMP, TIFF, PDF and more. The software provides versatile editing tools...
SqueezeFile
SqueezeFile is an open-source, cross-platform file compression software that allows users to dramatically reduce file sizes through its use of advanced lossless data compression algorithms. It features a clean and intuitive graphical user interface that makes it easy for anyone to quickly compress their files.Some key features of SqueezeFile include:Supports...
PictureBeaver
PictureBeaver is a graphic design and photo editing application aimed at both professional designers and hobbyists. It provides a wide range of tools for creating visual graphics from scratch as well as editing existing images.Some key features of PictureBeaver include:Intuitive drawing and shape tools for illustrations and diagramsLayer-based image editing...
CoolTweak
CoolTweak is a system optimization and cleaning utility designed to help boost the performance and stability of Windows computers. It provides a set of easy-to-use tools to clean up unused and temporary files, fix registry errors, defragment the hard drive, and fine-tune various system settings for improved speed and efficiency.Some...
AdvanceCOMP
AdvanceCOMP is an open-source command-line compression utility for Linux, Windows, and macOS. It supports creating and manipulating archives in the gzip, bzip2, and 7z formats using various compression algorithms.Some key features of AdvanceCOMP include:High compression ratios using algorithms like LZMA and PPMdMultithreading support for faster compression on multi-core systemsIntegration with...
UtilStudio Photo Resizer
UtilStudio Photo Resizer is a free image editing application for Windows that provides a fast and easy way to resize, crop, rotate, rename, and convert images. It has an intuitive and straightforward user interface that makes it easy to perform common photo editing tasks.Some of the key features of UtilStudio...
Aerate
Aerate is an open-source knowledge management and brainstorming application for Windows, Mac and Linux. It allows users to visually organize their ideas, notes, projects, content and more in an intuitive graphical interface.Some key features of Aerate include:Visual linkages - Link concepts, notes and ideas visually to see relationshipsFlexible organization -...
Photo Resizer Expert
Photo Resizer Expert is a powerful yet easy-to-use photo editing and management software for Windows. It enables users to efficiently process large volumes of images by resizing, cropping, converting between formats, renaming, adding text or graphics, adjusting color and lighting, removing noise/distortions, and more.Key features include:Batch resize unlimited photos -...
Batch Compress
Batch Compress is a free compression software for Windows that provides an easy way to compress multiple files and folders into ZIP or 7Z archive files. It has an intuitive interface that allows you to simply drag-and-drop files and folders for archiving.Key features of Batch Compress include:Compress multiple files and...
Photo Resizer HD
Photo Resizer HD is a versatile yet easy-to-use photo editing application for Windows. It provides a complete solution for resizing digital images while maintaining their quality. With an intuitive interface, it allows batch processing multiple photos at once to customize their dimensions and resolution.Key features include:Batch resize hundreds of photos...
SizeRox
SizeRox is a disk space analyzer and duplicate file cleaner for Windows designed to help you understand what is taking up space on your hard drives and recover valuable storage capacity.When launched, SizeRox scans all your local drives and builds an interactive visual map showing you the size of folders...
Tinybeest
Tinybeest is an open-source and free alternative to Microsoft 365 apps like Word, Excel, and PowerPoint. It includes a word processor, spreadsheet program, and presentation software with the basic features needed for personal and small business use.The word processor allows you to format text, insert images and tables, spell check,...
SeaMonster
SeaMonster is an open-source web testing tool used for analyzing the content and performance of websites. It provides a suite of automated checks and user-configurable tests to help evaluate key aspects of a site including:Accessibility - checks if the website meets accessibility standards for users with disabilities.Broken links - identifies...
Compress.Studio
Compress.Studio is a free online tool for compressing image files such as JPEGs, PNGs, GIFs and SVGs. It aims to reduce file sizes significantly without sacrificing perceptual quality. The compression is optimized for web images, making Compress.Studio ideal for websites, blogs and online publications.Using Compress.Studio is very simple - you...
Black Bird Image Optimizer
Black Bird Image Optimizer is a free online image compression and optimization tool ideal for photographers, bloggers, web designers and any user wanting to reduce image file sizes. It offers an intuitive drag & drop interface allowing you to simply upload images that need optimizing.Key highlights of Black Bird Image...
RoboSizer
RoboSizer is an easy-to-use Windows software application designed specifically for batch image resizing and format conversion. With its intuitive drag-and-drop interface, RoboSizer makes it simple to resize hundreds or even thousands of images in just a few clicks.Whether you are a web developer needing to generate multiple sizes of product...
Punchi.me
punchi.me is a robust time tracking and productivity platform built specifically for agencies and professional services organizations. It makes time tracking simple with easy start/stop timers and allows you to track billable and non-billable time across projects and clients.Key features include:- Easy to use start/stop timers- Dashboard for an overview...
Plastiliq ImageResizer
Plastiliq ImageResizer is an easy-to-use image editing and batch processing software for Windows. It enables users to resize multiple images at once by percentage, pixels, inches, centimeters and other units. The intuitive interface allows you to add files and folders, select the desired output format and size, and export all...
