Image comparison

[mathare]

Anyone know of any free software that will do a pixel-by-pixel comparison of two images?

[Win2Win]

Not sure if you want free....but these have demo's

http://www.gold-software.com/download3306.html

http://www.bolidesoft.com/imagecomparer.html

[vegyjones]

Anyone know of any free software that will do a pixel-by-pixel comparison of two images?

[Win2Win]

Well demo's are free.....ish (definitely free if you're clever )

[John]

Cheating at spot-the-difference pub games again eh? :D

[mathare]

Cheating at spot-the-difference pub games again eh? :D

If only!

I have software testers working for me who can't test very well it seems. Our tests tell them to press some buttons and watch the screen to see the data displayed (graphically) change slightly and they keep failing these steps because they can't see any changes. So I want image comparison software so I can get them to take before and after screenshots and compare them and prove there are differences.

In hindsight the software doesn't have to be free really, just not that expensive.

I haven't had a chance to check out either of the links in detail yet but I shall endeavour to do so later