Remove gamma from PNGs

AG
Posted By
Alvaro G Vicario
Mar 18, 2005
Views
677
Replies
1
Status
Closed
I’ve just upgraded to Photoshop CS and I’m having problems with PNG for the web. It seems some gamma info is added to the file: the result is that in Internet Explorer my graphics no longer match background colours.

This didn’t happen in version 7. Furthermore, I used to save PNGs using the SuperPNG plugin but under CS it not longer works for palette files.

Thank you in advance for any hint,

—
— Álvaro G. Vicario – Burgos, Spain
— Don’t e-mail me your questions, post them to the group —
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AG
Alvaro G Vicario
Mar 18, 2005
*** Alvaro G Vicario wrote/escribió (Fri, 18 Mar 2005 14:01:15 +0100):
I’ve just upgraded to Photoshop CS and I’m having problems with PNG for the web. It seems some gamma info is added to the file: the result is that in Internet Explorer my graphics no longer match background colours.
This didn’t happen in version 7. Furthermore, I used to save PNGs using the SuperPNG plugin but under CS it not longer works for palette files.

Just a remark. I’ve found a command line tool called PNG Crush that allows me to remove the gAMA chunk, thus solving my problem. In the worst case I suppose I can write a script to batch-process my web image directories. However, I’m still pretty interested in a Photoshop-related solution.

http://pmt.sourceforge.net/pngcrush/

—
— Álvaro G. Vicario – Burgos, Spain
— Don’t e-mail me your questions, post them to the group —

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