Type "Defragment" in the search bar. Optimizing your drives helps your file system run more efficiently (use this for HDDs; Windows automatically manages SSDs via TRIM). Trusted Free Third-Party Cleaners
: Some "PC Cleaner" sites use scare tactics to trick users into paying for fixes that Windows 10/11 already handles for free. Account Theft
If you prefer a dedicated software interface, choose well-known programs that offer robust free versions without requiring a cracked key: pc cleaner pro license key
When you purchase the version, you typically unlock unlimited scanning, one-click fixes, automated scheduling, and priority customer support. The free version, by contrast, often only scans for issues but requires a license key to actually fix them.
The safest and most reliable way to obtain a license key is through the developer's official website or authorized retail partners. Type "Defragment" in the search bar
A completely free, open-source system cleaner that prioritizes user privacy and deep cleaning.
Scans for and removes temporary files, cache, and broken shortcuts.
Software piracy violates intellectual property laws and terms of service agreements, which can lead to internet service provider (ISP) penalties. Built-In Windows Alternatives (Free and Safe)
Occasionally, software sites like Humble Bundle or SharewareOnSale offer legitimate discounts or limited-time free licenses.
For macOS
Best on macOS
The most reliable way to Optimize – Resize – Convert – Watermark Images and Videos in bulk
Supports input and output of animated PNG, GIF, WebP and multi-framed HEIC
Blazing fast and high quality compression
Preserves image metadata (EXIF Tags), ability to skip sensitive metadata
Apply your custom watermark, keyboard short-cuts, advanced filtering options and resize the image based on target print sizes
Output file name manipulation (suffix, prefix, replace on file names)
Most easy to use file name, file size & modified date based filter to exclude/include files for compression
For Windows
Award Winning
Windows App
Mass Image Compressor is proud to have received the ‘Open Source Excellence’ award by SourceForge. This award reflects our commitment to delivering valuable tools. Commercial products exist, but focus remains on accessible, high-quality solutions, prioritizing people over profit.
Bulk Operation: Works on one or more images and on entire folder (and its sub-folders)
Image: Convert, Resize, Optimize, Watermark
Extremely Ease of use: Drag & Drop folder & files
Supports input images in all major formats including JPG/JPEG, PNG, WEBP, GIF, TIFF, AVIF, HEIC, JP2, BMP, as well as RAW image formats from leading camera brands like Sony (ARW), Adobe (DNG), Nikon (NEF), Canon (CR2, CR3, CRW), Kodak (DCR, KDC), Minolta (MRW), Olympus (ORF), Fujifilm (RAF), Pentax (PEF), Panasonic (RW2), Samsung (SRW), Epson (ERF), Hasselblad (3FR), and Mamiya (MOS, MEF).
Output Format Supported: JPEG, PNG, WebP, AVIF, GIF
Supports input and output of animated PNG, GIF, WebP!
Blazing fast and high quality compression
Preserves image metadata (EXIF Tags, XMP and IPTC data), ability to skip sensitive metadata
Output file name manipulation (suffix, prefix, replace on file names)
File name and file size based filter to exclude/include files for compression
It’s hard to find difference!
Move the switch to look at sample compression.
Original
Compressed
Original 345 KB
Compressed with Mass Image Compressor – 89 KB (74% Reduction)
Photo Credit: Meena Kadri – https://www.flickr.com/photos/meanestindian/388684934 License: CC BY 2.0
Recent Posts
Why Mass Image Compressor is the Best WebP Converter–And How It Auto Selects Lossy vs Lossless If you’ve ever tried converting images to WebP, you’ve probably faced this question: Should I use lossy or lossless compression? Most tools make you decide.Mass Image Compressor doesn’t. Starting with: Mass Image Compressor automatically chooses the best option for you. And that’s a big deal. What Makes […]
PNG Compression with Mass Image Compressor–In Short: Mass Image Compressor keeps PNGs safe by default. You will usually see a noticeable size drop with no visible quality change even if you have selected “Allow Quality Loss in PNG” option in UI. We do not let PNG quality drop lesser than 90%. When people say “Compress PNG image”, they often mean […]
Mass Image Compressor vs IrfanView (Windows OS)–I usually don’t write about other tools comparable or alternative to Mass Image Compressor as there are ample of articles doing the same. Lately I have noticed that many users compare Mass Image Compressor and IrfanView as if they are interchangeable alternative. Purpose of this post is to clear that up by outlining the real […]
Type "Defragment" in the search bar. Optimizing your drives helps your file system run more efficiently (use this for HDDs; Windows automatically manages SSDs via TRIM). Trusted Free Third-Party Cleaners
: Some "PC Cleaner" sites use scare tactics to trick users into paying for fixes that Windows 10/11 already handles for free. Account Theft
If you prefer a dedicated software interface, choose well-known programs that offer robust free versions without requiring a cracked key:
When you purchase the version, you typically unlock unlimited scanning, one-click fixes, automated scheduling, and priority customer support. The free version, by contrast, often only scans for issues but requires a license key to actually fix them.
The safest and most reliable way to obtain a license key is through the developer's official website or authorized retail partners.
A completely free, open-source system cleaner that prioritizes user privacy and deep cleaning.
Go to Settings > System > Storage . Turn on Storage Sense to automatically delete temporary files.
Scans for and removes temporary files, cache, and broken shortcuts.
Software piracy violates intellectual property laws and terms of service agreements, which can lead to internet service provider (ISP) penalties. Built-In Windows Alternatives (Free and Safe)
Occasionally, software sites like Humble Bundle or SharewareOnSale offer legitimate discounts or limited-time free licenses.
