6/20/2023 0 Comments Pdfinfo command package![]() ![]() Sometimes fail read pdf signed using DocuSign, Solution for DocuSign issue.The pdfinfo technique in Ocaso's answer below is also very fast-the same as the pdftoppm one. A relatively big PDF will use up all your memory and cause the process to be killed (unless you use an output folder) Testing them with the time command in front shows that the strings one is extremely slow, taking 0.200 sec on a 142 pg pdf, whereas the pdftoppm one is very fast, taking 0.020 sec or less on the same pdf.If you want to know the best settings (most settings will be fine anyway) you can clone the project and run python tests.py to get timings.PNG format is pretty slow, this is because of the compression.If i/o is your bottleneck, using the JPEG format can lead to significant gains. ![]() Using multiple threads can give you some gains but avoid more than 4 as this will cause i/o bottleneck (even on my NVMe SSD!).Otherwise i/o usually becomes the bottleneck. Using an output folder is significantly faster if you are using an SSD.Allow the user to specify poppler's installation path with poppler_path.single_file parameter allows you to convert the first PDF page only, without adding digits at the end of the output_file.grayscale parameter allows you to convert images to grayscale ( -gray in pdftoppm CLI).size=(500, 500) will resize the image to 500x500 pixels, not preserving aspect ratio.size=(400, None) will make the image 400 pixels wide, preserving aspect ratio.size=400 will fit the image to a 400x400 box, preserving aspect ratio.size parameter allows you to define the shape of the resulting images ( -scale-to in pdftoppm CLI).paths_only parameter will return image paths instead of Image objects, to prevent OOM when converting a big PDF.jpegopt parameter allows for tuning of the output JPEG when using fmt="jpeg" ( -jpegopt in pdftoppm CLI) (Thank you pdfinfo_from_path and pdfinfo_from_bytes which expose the output of the pdfinfo CLI.Fixed a bug where using pdf2image with multiple threads (but not multiple processes) would cause and exception. ![]()
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