MASS IMAGE COMPRESSOR

Lightening fast, rocksolid and most complete bulk image compressor

Optimize – Resize – Convert – Watermark Images

One Image, Multiple Image, Entire Folder

Download Mass Image Compressor on Mac App Store

Compression with Quality

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

Capability

⊞ Windows (details page)

 macOS (details page)

Batch image compression

✓ Yes

Batch resizing

✓ Yes

Print-size / 300 DPI resizing

✗ No

✓ Yes

Image format conversion

✓ Yes

Camera RAW conversion

✓ Yes

Animated image conversion

✓ Yes

PNG lossy/lossless optimization

✓ Yes

Image watermarking

✓ Yes

EXIF/metadata retention

✓ Yes

Live preview

✓ Yes

Smart WebP (know more)

✓ Yes

AVIF output

✓ Yes

✗ No

HEIC output

✗ No

✓ Yes

Video compression

✗ No

✓ Yes

Video resizing

✗ No

✓ Yes

Portable build

✓ Yes (download )

✗ No

Installer

✓ Yes (download )

✗ No

Store Release

✓ Yes (download)

Open source

✓ Yes (official respository)

✗ No

Image Cropping

✗ No

Supported Input Image Formats

JPEG/JPG, PNG, WebP, GIF, TIFF/TIF, AVIF, HEIC, JP2, BMP, SVG, JXL, ARW, DNG, NEF, CR2, CR3, CRW, DCR, MRW, ORF, RAF, PEF, RAW, RW2, SRW, ERF, 3FR, KDC, MOS, MEF, PSD, PPM, PGM, PBM, PNM, PAM, XBM, XPM, MPO, J2K, JPC, JPF, JPM, JPX, MJ2, SVGZ, HDR, EXR, PFM, NRW, SR2, SRF, RWL, X3F, GPR, IIQ

JPEG/JPG, JP2, TIFF/TIF, GIF, PNG, BMP, HEIF, HEIC, WebP, CR2, CR3, NEF, ORF, ARW, RAF, RW2, DNG, PSD, SRW

Output (animated if output format supports)

JPEG/JPG, WebP, PNG, GIF, AVIF

JPEG/JPG, WebP, PNG, GIF, HEIC

Recent Posts

Mass Image Compressor for macOS v2.5 – This is release note of v2.5 of Mass Image Compressor for v2.5. This release makes the app easier to follow from start to finish, and adds lossy compression for PNG files. Choosing where files are saved is now Step 2 Picking your output location and saving options used to live in the sidebar, where it […]

Free Online Mass Image Compressor – in Making – We are working on an online version of Mass Image Compressor that will be powerful and privacy friendly. This article announces our plan. But, the browser versions always come with real limits. We also want to set your expectations clearly in this post. Here’s What to Expect For more than a decade and a half, […]

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 […]