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Edit an existing pdf document. PHP Forums on Bytes.

I have a web application that is currently getting a base64 representation of a PDF from the server. I'm able to use Mozilla's pdf.js to display this on a and toggle through the pages with a dropdown.

How To Install Pdflib In Php Windows 7 more. According to everything I've been able to find and, it's not possible to edit the PDF with pdf.js. I've found and while I'm able to take the canvas and do a.toDataURL() with it for each page and build a new PDF document with it, but there are two issues: • The newly generated PDF will just be a series of images on each page, so any text in the original PDF will just be an image after I'm done with it. • I generate a new PDF with jsPDF and then send the base64 of it back to pdf.js to display it on the canvas. Something happens between these steps where the images of the pages get scaled incorrectly, so each page takes up about 3/4 of the canvas after each new PDF change. I've been unable to get it to retain the same size/scale. JsPDF doesn't look like it has a way to load an existing PDF, it only creates new ones.

And also look like they only create new PDF files. Download Free The Weathering Magazine Issue 01 Pdf Printer. So my question: Is there anything that will allow for both viewing a pdf (from base64) and for making changes to it? Ideally I'd watch for changes to the canvas, then draw that change onto the pdf page. When done, export that to a base64 string to send back to the server. Quick answer - no and it is quite unlikely you will find a cross-browser solution. It is very unlikely that you will find a PDF-perfect solution.

Better to think about having the users edit HTML and generate the PDF at the server. Why - the PDF format is both brilliant and fiendish at the same time.

Brilliant because of its portability, but fiendish because of the internal structure and storage mechanisms. There is no friendly 'DOM' like with HTML. If we were starting out afresh to develop a portable document format it would not be PDF that we would choose. But PDF currently has too much momentum to be thrown away, period.

Younger viewers might be wondering how the hell this manic format got into its market leading position and where it came from. Well, when the founding fathers of PDF were laying down the design, before XML, JSON, HTML and even the Internet, they weren't working with today's document sharing in mind. They were working on a better way to encode printing instructions - the PostScript printer driver concept. These were never expected to be edited before the printer consumed them, and they were worthless for any other purpose. Then someone noticed the you could interpret the PostScript drawing instructions to a screen, and subsequently someone spotted the fantastic potential to employ this as a transportable, cross device display concept.