I think what you want to use is the paste mask argument. see the docs, (scroll down to paste) from PIL import Image img = Image.open(basefile) layer = Image.open(layerfile) # this file is the transparent one print layer.mode # RGBA img.paste(layer, (xoff, yoff), mask=layer) # the transparancy layer will be used as the mask img.save(outfile)
To get the alpha layer of an RGBA image all you need to do is: red, green, blue, alpha = img.split() or alpha = img.split()[-1] And there is a method to set the alpha layer: img.putalpha(alpha) The transparency key is only used to define the transparency index in the palette mode (P). If you want … Read more
For inline SVG you’ll need to: Convert the SVG string to a Blob Get an URL for the Blob Create an image element and set the URL as src When loaded (onload) you can draw the SVG as an image on canvas Use toDataURL() to get the PNG file from canvas. For example: function drawInlineSVG(ctx, … Read more
The accepted answer is fine. There is an official help on options available. Also basic Shell commands will do nicely here: for x in 10 100 200 ; do inkscape –export-png logo${x}.png -w ${x} logo.svg ; done On the command line in windows use this line from @avalancha in the comments for %x in (100 … Read more
PNG does not support “multipage” images. MNG is a PNG variant that supports multiple images – mostly for animations, but it’s not a real PNG image (diffent signature/header), and has never become popular. APNG is a similar attempt, but more focused on animations – it’s more popular and alive, though it’s less official – it’s … Read more
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You can create a bitmap with the size you want, then create a Graphics object to be able to draw on the bitmap. The Clear method is the simplest way to fill the image with a color. Then save the image using the PNG format: using (Bitmap b = new Bitmap(50, 50)) { using (Graphics … Read more
It has limited functionality, especially when it comes to writing back to disk non RGB images, but Christoph Gohlke’s tifffile module reads in 3 channel 16-bit TIFFs with no problems, I just tested it: >>> import tifffile as tiff >>> a = tiff.imread(‘Untitled-1.tif’) >>> a.shape (100L, 100L, 3L) >>> a.dtype dtype(‘uint16’) And Photoshop reads without … Read more
As a general rule, PNG is never worse, and often better than GIF because of superior compression. There might be some edge cases where GIF is slightly better (because the PNG format may have a slightly larger overhead from metadata) but it’s really not worth the worry. It may just be the tools I’m using, … Read more