I followed xehpuk’s answer but had issues with certain images having the last few rows of pixels missing when rendered in certain browsers via a data url (Chrome and Firefox, Safari seemed to render them fine). I suspect this is because the browser is doing it’s best to interpret the data but the last few … Read more
convert *.png screens.gif This answer suggested installing convert with brew install ImageMagick.
Assuming you’re in folder a the following might work for you find . -name “*.jpg” -exec mogrify -format png {} \; You can use the find command to get all the jpg files in all the subfolders and pass your command as an argument to find
You can use one commandline with two commands (gs, convert) connected through a pipe, if the first command can write its output to stdout, and if the second one can read its input from stdin. Luckily, gs can write to stdout (… -o %stdout …). Luckily, convert can read from stdin (convert -background transparent – … Read more
Disclaimer: I’m the author of RealFaviconGenerator, which I expect to be up-to-date (mostly, see below). So don’t be surprised if this answer matches what RFG generates. The one-size-fits-all myth There is no “one size fits all” icon. You can’t create a single SVG icon and expect it to work everywhere. From a technical point of … Read more
You can further reduce quality of PNG by using posterization: https://github.com/pornel/mediancut-posterizer (Mac GUI) This is a lossy operation that allows zlib to compress better. Convert image to PNG8 using pngquant. It reduces images to 256 colors, so quality depends on the type of image, but pngquant makes very good palettes, so you might be surprised … Read more
You can use the Windows Imaging Component to load PNG files (on Windows XP SP2 and later). See MSDN Magazine (original in web archive – a bit better formatting) for an introduction on how to use the API and my blog post for a code sample that loads a PNG from an IStream and converts … Read more
background: rgba(0,0,0,.5); you can use rgba for opacity, will only work in ie9+ and better browsers
Yes, of course this is possible. When dragging multiple files on a batch file you get the list of dropped files as a space-separated list. You can verify this with the simple following batch: @echo %* @pause Now you have two options: PngCrush can already handle multiple file names given to it on the command … Read more