![]() ![]() For example, in the ZX Spectrum the picture is stored in a two-color format, but these two colors can be separately defined for each rectangular block of 8×8 pixels. Old graphics chips, particularly those used in home computers and video game consoles, often have the ability to use a different palette per sprites and tiles in order to increase the maximum number of simultaneously displayed colors, while minimizing use of then-expensive memory (and bandwidth). Modifiable palettes are sometimes referred to as pseudocolor palettes. The colors available in the palette itself may be fixed by the hardware or modifiable by software. With the relatively low color depth, the stored value is typically a number representing the index into a color map or palette (a form of vector quantization). ![]() The number of bits of resolved intensity in a color channel is also known as radiometric resolution, especially in the context of satellite images. The definition of both color precision and gamut is accomplished with a color encoding specification which assigns a digital code value to a location in a color space. Modern standards tend to use bits per component, but historical lower-depth systems used bits per pixel more often.Ĭolor depth is only one aspect of color representation, expressing the precision with which the amount of each primary can be expressed the other aspect is how broad a range of colors can be expressed (the gamut). When referring to a color component, the concept can be defined as bits per component, bits per channel, bits per color (all three abbreviated bpc), and also bits per pixel component, bits per color channel or bits per sample (bps). When referring to a pixel, the concept can be defined as bits per pixel (bpp). Compressing images with the website is free for everyone and we like to keep it that way! If you like TinyPNG please contribute by making a donation.Color depth or colour depth (see spelling differences), also known as bit depth, is either the number of bits used to indicate the color of a single pixel, or the number of bits used for each color component of a single pixel. ![]() ![]() In 2014 we added intelligent compression for JPEG images and in 2016 we added support for animated PNG. We created TinyPNG in our quest to make our own websites faster and more fun to use with the best compression. Why did you create TinyPNG?Įxcellent question! We frequently use PNG images, but were frustrated with the load times. It allows you to scale, preview and save compressed PNG and JPEG images straight from Photoshop. You can also install the TinyPNG Photoshop plugin. We’ll convert them to tiny indexed PNG files. You can use Save for Web to export your images as 24-bit transparent PNG files and upload them to TinyPNG. With other versions it is impossible and Photoshop CS5 cannot even display them properly. What about Photoshop?Įxcellent question! Only Photoshop CC 2015 or newer can save images as indexed PNG files with alpha transparency. If you want to create and compress stickers under 500 KB take a look at the iMessage Panda sticker example on Github. Only Interned Explorer does not support the format yet.Īpple added animated stickers to iMessage with the release of iOS 10. Binary transparency without any workarounds! Is it safe to use animated PNG?Įxcellent question! Chrome, Firefox, Safari and now Microsoft Edge all support APNG. With TinyPNG the background becomes transparent again. Still need to support Internet Explorer 6? It normally ignores PNG transparency and displays a solid background color. Is it supported everywhere?Įxcellent question! The files produced by TinyPNG are displayed perfectly on all modern browsers including mobile devices. I have excellent eyesight but can’t spot the difference either! Use the optimized image to save bandwidth and loading time and your website visitors will thank you. In the above image the file size is reduced by more than 70%. The result better PNG files with 100% support for transparency. All unnecessary metadata is stripped too. By reducing the number of colors, 24-bit PNG files can be converted to much smaller 8-bit indexed color images. File size 57 KB vs Shrunk transparent PNGĮxcellent question! When you upload a PNG (Portable Network Graphics) file, similar colors in your image are combined. ![]()
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