Mass Image Compressor 4.0.2

Mass Image Compressor is a fast and easy-to-use Windows app that helps you compress, resize, and convert large sets of images quickly.

The tool supports various formats including JPEG, PNG, WebP, AVIF, and GIF (including animated images), and offers precise control over output quality, image dimensions, and file naming schemes. You can reduce file sizes while keeping good quality, change image dimensions, and rename files in batches.

Users can filter or preserve metadata such as EXIF, IPTC, and XMP—including selectively removing GPS or serial number information. With features like drag-and-drop, Explorer integration, multiple output folder options, and lossless optimization tools like OxiPNG and pngquant, Mass Image Compressor is ideal for photographers, designers, and developers.

Features

• Compress multiple folders and files in one go (including optional subfolders)
• Seamless Windows Explorer integration via the "Send To" menu
• 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)

Mass Image Compressor 4.0.2 release notes:

• Major Release: 4.x Series Rewritten from the ground up
• Complete rewrite using a modern architecture for improved scalability, performance, and responsive UI.

Expanded format support:

• Input: JPG, PNG, WebP, TIFF, GIF, BMP, AVIF, HEIC, JP2, RAW (ARW, DNG, NEF, CR2, CR3, CRW, DCR, KDC, MRW, ORF, RAF, PEF, RW2, SRW, ERF, 3FR, MOS, MEF).
• Output: JPG, PNG, WebP, AVIF, GIF.

New features:

• Animated image handling (e.g., animated WebP and GIF)
• Side-by-side preview for compression comparison
• File filters by extension, size, and visibility
• Multi-file drag and drop
• Gallery view modes for better browsing
• Rich compression settings (quality, resizing strategies, naming rules)
• Flexible output management (replace originals, custom folders, or preserve structure)
• Smart conflict handling with detailed warnings
• Throttled task scheduling for smoother UI
• Improved metadata support with options to preserve or exclude (e.g., GPS, camera info)

Dependency Updates & Stability

• Magick.NET-Q8-OpenMP-x64 updated from 14.5.0 to 14.7.0 (resolves hang and security issues)
• Microsoft App SDK updated from 1.6.250108002 to 1.7.250606001 (stability improvements)

Download: Mass Image Compressor 4.0.2 | 81.9 MB (Open Source)
Download: Mass Image Compressor Portable | 114.0 MB
View: Mass Image Compressor Home Page | Github | Screenshot

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