PNG - Revision history

Mouseman: /* Transparency, decals, and PNG files */

2012-03-25T17:49:21Z

‎Transparency, decals, and PNG files

Mouseman at 03:25, 10 June 2011

2011-06-10T03:25:57Z

Mouseman at 23:02, 21 May 2011

2011-05-21T23:02:57Z

Mouseman at 23:02, 21 May 2011

2011-05-21T23:02:02Z

Mouseman at 23:00, 21 May 2011

2011-05-21T23:00:18Z

Rodney: New page: Description Usage Benefits Shortfalls How to Index

2010-01-03T23:07:04Z

New page: Description Usage Benefits Shortfalls How to Index

New page

[[Description]]

[[Usage]]

[[Benefits]]

[[Shortfalls]]

[[Howto|How to Index]]

← Older revision		Revision as of 17:49, 25 March 2012
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	== Transparency, decals, and PNG files ==		== Transparency, decals, and PNG files ==

−	PNG files with transparency sometimes do not render correctly. TGA files work fine.	+	PNG files with transparency sometimes do not render correctly. For PNG files, [http://www.hash.com/forums/index.php?s=&showtopic=39316&view=findpost&p=352301 mtpeak reports]: Open the image in gimp and resave with the "save background color" option unchecked. You can also just set the key color in the image properties.
		+
		+	TGA files work fine.

← Older revision		Revision as of 03:25, 10 June 2011
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	The problem is more widespread in the web browser arena. Here is a brief overview of the problem web browsers have with correctly rendering png images. http://morris-photographics.com/photoshop/articles/png-gamma.html		The problem is more widespread in the web browser arena. Here is a brief overview of the problem web browsers have with correctly rendering png images. http://morris-photographics.com/photoshop/articles/png-gamma.html
		+
		+	== Transparency, decals, and PNG files ==
		+
		+	PNG files with transparency sometimes do not render correctly. TGA files work fine.

@@ Line 1: / Line 1: @@
-= Problems with PNG =
+= PNG file format =
-== Saving png out of Photoshop ==
+== Gamma Problem Saving PNG out of Photoshop ==
 [http://www.hash.com/forums/index.php?s=&showtopic=40012&view=findpost&p=350913 Source]: Yves Poissant addressed problems saving PNG from Photoshop a couple of years ago. It seems Photoshop (and perhaps other programs) sets the gamma of png images in some strange way. I think on Windows, the gamma is set to 2.2. Yves suggested removing the gamma information altogether using a program like PngCrush ( http://pmt.sourceforge.net/pngcrush/ ).

@@ Line 2: / Line 2: @@
 == Saving png out of Photoshop ==
-[http://www.hash.com/forums/index.php?s=&showtopic=40012&view=findpost&p=350913|Source] Yves Poissant addressed problems saving PNG from Photoshop a couple of years ago. It seems Photoshop (and perhaps other programs) sets the gamma of png images in some strange way. I think on Windows, the gamma is set to 2.2. Yves suggested removing the gamma information altogether using a program like PngCrush ( http://pmt.sourceforge.net/pngcrush/ ).
+[http://www.hash.com/forums/index.php?s=&showtopic=40012&view=findpost&p=350913 Source]: Yves Poissant addressed problems saving PNG from Photoshop a couple of years ago. It seems Photoshop (and perhaps other programs) sets the gamma of png images in some strange way. I think on Windows, the gamma is set to 2.2. Yves suggested removing the gamma information altogether using a program like PngCrush ( http://pmt.sourceforge.net/pngcrush/ ).
 You can also use IrfanView to gamma correct a png image. Open the image in IrfanView and go to Image > Color Corrections. Then set "Gamma Correction" to 1.00.
 You can also Batch correct a bunch of png images at once. Open IrfanView and go to Fle > batch Conversion. For "Output Format", choose "png". Then hit the "Advanced" button. Then check the box for "Gamma Correction" and enter a value.
 http://www.irfanview.com/
-The problem is more widespread in the web browser arena. Here is a brief overview of the problem web browsers have with correctly rendering png images. http://morris-photographics.com/photoshop/.../png-gamma.html
+The problem is more widespread in the web browser arena. Here is a brief overview of the problem web browsers have with correctly rendering png images. http://morris-photographics.com/photoshop/articles/png-gamma.html

← Older revision		Revision as of 23:00, 21 May 2011
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		+	= Problems with PNG =
		+
		+	== Saving png out of Photoshop ==
		+	[http://www.hash.com/forums/index.php?s=&showtopic=40012&view=findpost&p=350913\|Source] Yves Poissant addressed problems saving PNG from Photoshop a couple of years ago. It seems Photoshop (and perhaps other programs) sets the gamma of png images in some strange way. I think on Windows, the gamma is set to 2.2. Yves suggested removing the gamma information altogether using a program like PngCrush ( http://pmt.sourceforge.net/pngcrush/ ).
		+
		+	You can also use IrfanView to gamma correct a png image. Open the image in IrfanView and go to Image > Color Corrections. Then set "Gamma Correction" to 1.00.
		+	You can also Batch correct a bunch of png images at once. Open IrfanView and go to Fle > batch Conversion. For "Output Format", choose "png". Then hit the "Advanced" button. Then check the box for "Gamma Correction" and enter a value.
		+	http://www.irfanview.com/
		+
		+	The problem is more widespread in the web browser arena. Here is a brief overview of the problem web browsers have with correctly rendering png images. http://morris-photographics.com/photoshop/.../png-gamma.html
		+
		+	Not sure what Rodney had in mind below.
		+
	[[Description]]		[[Description]]