Batch image and photo converter, compressor, resizer and apply watermark of all images in entire folder
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.
Option 1: SourceForge.net
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.
Option 2: Github or Winget
You can download the installer from this Github project (see releases) or use below script to install via winget.
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.
Mass Image Compressor for macOS is written in Swift by us but it is closed source at present. You can download it from . It has all required features freely available and purchase is required only for professional features (like watermark or some advanced features).
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.
