The exact command-line used was as follows: dwebp webp_lossless.webp -o output.png We converted WebP-lossless images back to PNG using dwebp tool for rendering. To get the minimal output, the exact command-line used wasĪs follows: cwebp input.png -lossless -m 6 -q 100 -o webp_lossless.webp We used the 'lossless' option in cwebp tool for converting PNG to WebP. The exact command-line was as follows: convert image.png -resize 240x image_resized.png Recent version of ImageMagick's tool named convert, available at To rescale some of the larger source pictures (for viewing only), we used a ZopfliPNG with all filters: zopflipng -iterations=500 -filters=01234mepb -lossy_8bit -lossy_transparent input.png output-candidate.png ZopfliPNG: zopflipng -lossy_transparent input.png output-candidate.png Pngcrush: pngcrush -brute -rem tEXt -rem tIME -rem iTXt -rem zTXt -rem gAMA -rem cHRM -rem iCCP -rem sRGB -rem alla -rem text input.png output-candidate.png The following command line options are used Toolsįor PNG recompression, the best result from pngcrush 1.8.13 and ZopfliPNG 1.0.3 Thanks to the Google Doodle team for this image.įor the sake of reproducibility and to demonstrate the use of some WebPĬompression parameters, we describe here the exact steps involved when "Free Stock Photo in High Resolution - Yellow Rose 3 - Flowers"Īttribution-Share Alike 3.0 Unported license. The images above are listed here in order. The images on this page come from a number of different sources. Here are the links to the WebP files (viewable in Chrome 22 and above):
WebP-lossy (with alpha) file size: 57.3 KB WebP-lossy (with alpha) file size: 18.3 KB WebP-lossy (with alpha) file size: 51.6 KB WebP-lossy (with alpha) file size: 13.8 KB WebP-lossy (with alpha) file size: 17.7 KB The table also denotes the image size obtained in each mode.
#MAKE IMAGE TRANSLUCENT ONLINE FULL#
Click on any image to view the full sized If you have a compatible browser, you can find the We present the WebP images - converted back to PNG - for browsers notĬapable of rendering WebP. Reproducing the images section for more details. Note that we have used webp quality 90 for WebP-lossy images with alpha andĭefault quality for WebP-lossless images. The images are overlaid onto a checkered background as typically WebP-lossless images and WebP-lossy images with Alpha for side-by-sideĬomparison. The table below presents PNG images (compressed with pngcrush and pngout), WebP-lossless and WebP-lossy with alpha (transparency support). This gallery presents some sample images to showcase two new modes of WebP:
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