![]() ![]() ![]() However, the site will eventually service photographers who may be uploading images up to 10 MB in size (or images up to 5000x4000 pixels in size).ĭoing this kind of resize operation with large images tends to increase the memory usage by a very large margin (larger images can spike the memory usage for the script past 80 MB). convert -resize '100' image.png For anyone else wondering about height, then you would do this: convert -resize 'x100' image. The method used for resizing an image is called 'resizeImage'. 4 Answers Sorted by: 37 Seems this is the way it is done, noting that width is the first parameter. This works great on small (under 2 MB) photos and the entire resize operation takes less than a second on the server. The Imagick extension in PHP allows you to perform various image manipulations, including resizing images. convert puma1.png -compress jpeg \ -resize 1755x2475 \ -units PixelsPerInch \ -density 150x150 \ -page A3 \ -gravity center puma1. On the contrary it erases everything and the output becomes white page. Gravity seems to have no effect in the following command. As feared also system() exec() passthru() shellexec() are somehow restricted. png file with ImageMagick's gravity option. img eBook.pdf because of Traffic reasons I needed to move the site to a provider, who restricts bash commands. I'm currently using the GD function imagecopyresampled to take high resolution images, and cleanly resize them down to a size for web viewing (roughly 700 pixels wide by 700 pixels tall). I have a php site where I create a pdf book with the ImageMagick command convert dynamically from some pictures and offer it to download. What's the most efficient way to resize large images in PHP? ![]()
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