Mass Image Compressor is a powerful batch image processing tool designed to compress, resize, and convert images efficiently while maintaining quality. It supports popular formats such as WebP, AVIF, JPEG, PNG, and GIF, enabling users to optimize their images for various needs.
Key Features:
Batch process multiple folders and files simultaneously, including optional subfolders.
Advanced metadata handling with filtering options to strip GPS data or serial numbers.
Seamless support for animated images like GIFs and WebPs.
Utilize regex filters to exclude specific filenames or sizes during processing.
Flexible resizing options by percentage, fixed dimensions, or frame-based settings.
Audience & Benefit:
Ideal for photographers, graphic designers, web developers, and content creators, Mass Image Compressor streamlines image optimization. It reduces file sizes without compromising quality, saving storage space and enhancing website performance with faster loading times. The tool integrates effortlessly into your workflow, ensuring efficiency and precision in image management.
Install Mass Image Compressor via winget for a seamless experience tailored to meet your professional needs.
README
Mass Image Compressor
Mass Image Compressor is a fast, lightweight batch image processing tool that compresses, resizes, watermark and converts images to popular formats like WebP, AVIF, JPEG, PNG, and GIF—reducing file size while preserving quality.
This official source code of modern version of Mass Image Compressor hosted at SourceForge, redesigned with a modern WinUI 3 interface and built on .NET 8 for Windows 10 and 11 in year 2025.
📥 Download
Windows 10 and above, Windows Server 2019 and above
Use one of these methods to install Mass Image Compressor.
Download latest unsigned installer from SourceForge.net (free). As the installer is unsigned and releases first, Windows security may kick-in and may have to take additional steps to install this. Choose other options if you are not comfortable.
Get signed installer from Microsoft Store (one-time cost of a coffee). You get auto-update feature and Windows security is cool with it as the installer is signed.
Using older Windows System?
If you are on Windows 7, 8.x, you will need to use older version (3.3.x) of Mass Image Compressor which is shared on .
Mass Image Compressor for macOS is written in Swift by us but it is closed source at present. You can download it from Mac App Store. It has all required features freely available and purchase is required only for professional features (like watermark or some advanced features).
NOTE: Mass Image Compressor is NOT available on Android, iOS, iPadOS or as a web application.
🔧 Features
Compress multiple folders and files in one go (including optional subfolders)
Seamless Windows Explorer integration via the "Send To" menu (enabled if application is launched atleast once)
Advanced metadata copy settings (EXIF, XMP, IPTC) with filtering (e.g., strip GPS, serial numbers)
Full support for Animated Images (GIF, PNG, WebP)
Output to modern formats like WebP and AVIF
Regex filters for filenames and size-based exclusions
Suffix/Prefix options and filename text replacement for output files
Powerful Preview UI with pixel-level image comparison (CTRL + T)
Robust and faster RAW image support
Multiple flexible output destination modes:
Replace original files
Output to specific folder
Store next to original with suffix/prefix
Inside a Compressed subfolder
Flexible resizing:
By percentage
Long edge, fixed width/height
Frame-based for print or responsive image sets (1x/2x/3x)
Watermark Image (v4.1.0 and above)
🖼️ Screenshots
📦 Built With & Credits
This project makes use of the following libraries and tools:
We're collecting feedback during this rewrite phase. Join the discussion or report issues to help stabilize the new generation of Mass Image Compressor. If you have a functional feedback, provide it here.
💖 Support Development
If you find this project helpful, consider supporting its development. Test, Report Bugs, or just share it with friends!
Please read LICENSE and NOTICE.txt. If you're sharing a custom build, just make sure to remove the Cognirush Labs support email or contact links, otherwise folks might email/contact me about something I didn't build, and I won't be able to help (or worse, give them the wrong advice). Appreciate the understanding!
Also, your donation helps keep the project active and maintained. ☕ Donate via PayPal
or, purchase from Microsoft Store to make contribution and get automatic updates.
