If an image contains mostly gray shadows, then your choice is Grayscale.įor files that contain less than 256 colors it is better to use PNG8, but be attentive with the transparency, because some editors are not able to save transparency effect for PNG8.
Choosing the right type of palette lets you reduce the size of a PNG image. Additionally, each type may include the transparency effect. There are several types of the PNG format that may suit different types of tasks: gray palette, color palette (256 colors), full-color palette. These types of chunks contain no useful information for a web browser, so can be removed without consequences with the help of such tool as ExifTool. You may also easily remove the chunks that contain commentaries, the date of file modification, color profiles (for printing). additional: removing this type of chunks will let you reduce the image size.critical: IHDR, PLTE for PNG Palette, one or several IDAT and IEND.Removing excessive meta-information (chunks) However, they are all based on similar principles: they all try to apply various sets of filters to reduce the size of the main color.īesides, there are several more ways to optimize image size that we are going to describe below.ġ.
You may find quite a large set of tools that let you optimize PNG images. If an image file contains a wide variety of colors then it makes sense to use JPEG. PNG is perfect for compression of files that contain gradients and monochrome parts. You can save multiple image display settings to make the file look the same way on different screens. Uses perfect compression algorithm that does not reduce image quality.Supports transparency (you can make parts of an image fully or partially transparent).The PNG format is pretty widespread over the internet, that is why by optimizing image size you may greatly improve your website load time. Today we are going to talk about PNG files optimization without quality loss.
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