Compare software

Image Compare vs dssim: catalog facts
Image Compare	dssim
Free Free and open source under GPL-3.0-or-later.	Free Free and open source under the AGPL-3.0-or-later license.
Windows, Linux	Windows, macOS, Linux, Command line
Compare up to 12 images in side-by-side, stacked, or grid views Synchronized zoom and pan across images	Compares PNG and JPEG images using a perceptual metric Supports alpha channels and color profiles
Available for Linux and Windows	Scores are not directly comparable with those from other tools.
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: AGPL-3.0-or-later
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.