pdf-manipulation

I want to add a metadata key-value pair to the metadata of a pdf file. I found a several years old answer, but I think this is way to complicated. I guess there is an easier way today: https://stackoverflow.com/a/3257340/633961 I am not married with pypdf2, if there is an easier way, then I go this way? Tarun Lalwani You can do that using pdfrw pip install pdfrw Then run from pdfrw import PdfReader, PdfWriter trailer = PdfReader("myfile.pdf") trailer.Info.WhoAmI = "Tarun Lalwani" PdfWriter("edited.pdf", trailer=trailer).write() And then check the PDF Custom Properties Cyril N. I was surprised

I have a pdf with something like presentations slides and multiple slides per page. How can I use ghostscript to split the file so that there is one slide per page? A long time ago I wrote some code for someone on comp.lang.postscript to do this, again it was for PowerPoint slides. This PostScript code assumes that all the 'subpages' (ie slides) are the same size and location on the PDF page and that all the PDF pages are the same size. Save the following as a file called pdf_slice.ps and follow the usage as described in the comments. %!PS % Copyright (C) 2011 Artifex Software, Inc. All rights

I am having some issues with my code. I am trying to loop through a Drive folder that contains many PDFs and then merge these into one file. When I use my code it just creates a PDF for the last PDF in the Drive folder and not merge them all together as expected. function MergeFiles(){ var folder = DocsList.getFolderById('myFolderID'); var files = folder.getFiles(); var blobs = []; for( var i in files ) blobs.push(files[i].getBlob().getBytes()); Logger.log(blobs.push(files[i].getBlob().getBytes())); var myPDF = Utilities.newBlob(blobs.pop(), "application/pdf", "newPDF.pdf"); folder.createFile

I'm trying to convert to grayscale this PDF: https://dl.dropboxusercontent.com/u/10351891/page-27.pdf Ghostscript (v 9.10) with pdfwrite Device fails with a "Unable to convert color space to Gray, reverting strategy to LeaveColorUnchanged." message. I'm able to convert it through an intermediary ps file (using gs, pdftops (v 0.24.3) or pdf2ps) but this convertion rasterize the whole PDF. I tryed a lot of other things: normalize the PDF using qpdf (v 5.0.1) or pdftk (v 1.44), transform it to a svg file and back to a PDF via Inkscape (v 0.48.4)... nothing seems to work. The only one solution I

I'm trying to extract text from a large number of PDFs using PDFMiner python bindings. The module I wrote works for many PDFs, but I get this somewhat cryptic error for a subset of PDFs: ipython stack trace: /usr/lib/python2.7/dist-packages/pdfminer/pdfparser.pyc in set_parser(self, parser) 331 break 332 else: --> 333 raise PDFSyntaxError('No /Root object! - Is this really a PDF?') 334 if self.catalog.get('Type') is not LITERAL_CATALOG: 335 if STRICT: PDFSyntaxError: No /Root object! - Is this really a PDF? Of course, I immediately checked to see whether or not these PDFs were corrupted, but