![]() ![]() With these displays, changing the screen contents is where all the work happens, and it can be a visually. Flip the context vertically because the Core Graphics coordinate system starts from the bottom. One consideration is the e-ink display itself. Translate the context so that we only draw the `cropRect`.Ĭtx.anslateBy(x:, y: - ) Let renderer = UIGraphicsImageRenderer(size: pageRect.size)Ĭtx.fill(CGRect(x: 0, y: 0, width: pageRect.width, height: pageRect.height)) ![]() Fetch the page rect for the page we want to render. Paint each pages content to an image andįor (int i = 0 i < document.getNumberOfPages() i++) ("Error encryption not supported " + ex) Import .GraphicsRenderingHints ĭtFile("C:\\Users\\Dell\\Desktop\\test.pdf") I use icepdf an open source java pdf engine. How to convert a PDF into JPG with command line in Linux?.jpg format at highest quality (least compression) and still at 300 DPI: mkdir -p images & pdftoppm -jpeg -jpegopt quality=100 -r 300 mypdf.pdf images/pgįor more explanations, options, and examples, see my full answer here: jpg format at 300 DPI: mkdir -p images & pdftoppm -jpeg -r 300 mypdf.pdf images/pg Affine distortion may be a better approach. tif file format at 300 DPI into a folder called "images", with files being named pg-1.tif, pg-2.tif, pg-3.tif, etc: mkdir -p images & pdftoppm -tiff -r 300 mypdf.pdf images/pg In ImageMagick 7, the option -exit will be introduced, so it would be possible to terminate an ImageMagick command if a condition is not meet. Here's a couple examples of producing high-quality images from a PDF: I really haven't had good success with convert, but I've had EXCELLENT success with pdftoppm. Here is one other way to do it in ImageMagick, if you know the picture is in landscape mode and the image w/h aspect is larger then 4/3. ![]()
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