PNG file structure analysis (I: Understand the PNG file storage format)
Preface
We all know that during the development of the mobile phone application program for j2's, we can use images in PNG format (even on some mobile phones, we can only
PNG is the image format that we often use, but do you really know about PNG?This is a front-end sharing will, a bit of cold will take you to understand the PNG you do not know. There are three first questions:What is PNG?What are the features of PNG?
Png image decoding and png Decoding
PNG, a Portable Network image Format (PNG), is derived from the unofficial "PNG's Not GIF" and is a bitmap file storage Format. When PNG is used to store a grayscale image, the depth of the grayscale image can be
Preface
We all know that during the development of the mobile phone application program for j2's, we can use images in PNG format (even on some mobile phones ).Only images in PNG format can be used. Although images can be used to add many highlights
PNG format and transparencyThis fireworks will be more clear, open the FIREWORKD optimization panel, you can clearly see the PNG has 3 different depths of the format: Png8, Png24, png32.Among them, in the optimization panel select Png8, you can find
Solution for failure of transparent effect (with gray background) of PNG images under IE6
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Solve the Problem of PNG transparency failure in IE6. PNG-IE6. PNG is transparent
PNG, the Portable Network Graphics format (Portable networks Graphic format,png), is derived from the unofficial "PNG's not GIF", which is a bitmap (bitmap file) storage format. When PNG is used to store grayscale images, the depth of the grayscale
The hateful IE6 did not support the transparent effect of PNG. It was not found by FF that it was a mess to browse IE6 today. It was a mess that IE6 did not support the transparent effect of PNG, crazy. I have found two articles on the Internet to
Next, we introduce several PNG images in the IE6 opaque solution1, with their own PNG, let IE6 side to goThe first time you make a PNG image, save it as a GIF, because IE6 is a GIF image that supports transparency and then defines it in CSS. Pngtest
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