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Batch convert JPG to WebP in Ubuntu
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| #First install the webp converter by this | |
| sudo apt-get install webp | |
| #go inside the directory where all images are there | |
| #make sure all images are in RGB color mode, otherwise you will get error for CMYK images. | |
| #Convert all images to RGB by this command (you should install ImageMagik to do that) | |
| for f in *.jpg; do convert -colorspace RGB "$f" "${f}"; done | |
| #finally convert all images to Webp format | |
| for f in *.jpg; do cwebp -q 90 "$f" -o "${f}".webp; done | |
| #Now you have filename.jpg.webp beside filename.jpg for all your images. | |
| #You can set the nginx or other webservers to conditionally show webp instead of jpg if browser support | |
| #Read this page to setup it in nginx config : https://github.com/uhop/grunt-tight-sprite/wiki/Recipe:-serve-WebP-with-nginx-conditionally | |
| # resize image to width 25, keeping aspect ratio | |
| convert -geometry 25x src/image1.png out/image1.png | |
| # resize image to height 25, keeping aspect ratio | |
| convert -geometry x25 src/image1.png out/image1.png | |
| # concatenate images horizontally | |
| convert +append src/image1.png src/image2.png out/image12horiz.png | |
| # concatenate images vertically | |
| convert -append src/image1.png src/image2.png out/image12vert.png |
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