Texturepacker pngoptimization how to#

But beware, CANVAS will render faster, because the CANVAS will be handled like any other image or bitmap when animated. (almost meaning stuff like - using 8-colorВ PNG data for masking for sharp edges or even traced SVG paths, separate control for Mask quality, etc.) But I think Christoph is already working on all that in secret.Д«eneath Canvas, my tool also offers various SVG techniques to use the image mask.

SAD - but now there's Christophs tool that does exactly what I wanted, with almost everything I missed. So going 'transparent JPG' was the only way to get it done with sane image sizes.Д«ut when I discovered all the details about JPG and that the browser doesn't perform a 'huffman optimization' which always left some compression potential untouched made me. I used this technique about 2 yearsВ ago when I had to animage quite big transparent graphics that would be over 300k even with tinyPNG. You can even sometimes see it in the base64 output, when there is lots of repitition, that's where the entropy is way too low for what you would consider a 'good compression'. So there's always a lack of optimized Huffman codes, selective quality, separate brightness and color compression, color subsampling, quantizers and so on. but it doesn't have all the controls for all the detailed aspects of compression, because it uses built-in Browser image compression. See the Pen aJLmrY by ninili ( on CodePen putImageData ( idata, 0, 0 ) Д¬odePen is not a good environment to test in, but here's a demo. length / 2 var i = 0 while ( i < len ) Д¬ontext. height ) var data32 = new Uint32Array ( idata. drawImage ( image, 0, 0 ) var idata = context. In Edge, it blew the doors off a regular array.Д¬ontext. How did you write your loop? I'm no expert in bitwise operations, but using this loop for a little-endian was faster in Chrome and Firefox. But you're only changing the alpha channel, so the number of reads and writes will be the same for both methods. Most of the performance gains with 32-bit manipulation come from being able to manipulate the pixel as a whole, instead of each channel separately. Maybe chrome's V8 optimizes this internally.

Texturepacker pngoptimization how to#

These are just some examples how to use the compression view.Д«tw.: Tried UInt32Array withВ direct pixel manipulation and did not seeВ any improvements in run time. In area 4 is a different pond, why? Copy the blue area from area 3 and you will save space. If it's not there is a opportunity for improvement. In area 1 the PNG uses much file size for compressing the ponds of lava. You can use the compression view to check the correctness of your sheets: If you need more colors that 256 I would break the sheets apart und consolidate images with similar colors.

Just use 8 bit PNG and set a color amount that pleases you. Those stains take space but shouldn't be there, correct? The compression view is really useful to identify dirty transparency. There are stains I've marked with red rectangles: Just use 8 bit PNG and set a color amount that pleases you (48kB instead of 212kB width 256 colors). I also don't see notable differences using 8 bit PNGs (908kB instead of 2637kB), but I think this won't work for all your products. But you have to keepВ an eye on the decompression time (you know, the typed array is on my list). But I suppose you have to say good bye to your texture packer then. jacket0.png gets a file size of 205kB instead of 2637kB with the default quality settings. This is actually the perfect case for transparent JPGs.