This mostly means utilising some kind of platform-dependant type library - tricky cross-platform.Im able to use Mozillas pdf.js to display this on a and toggle through the pages with a dropdown.
Ideally Id watch for changes to the canvas, then draw that change onto the pdf page. ![]() Its a bit overkill. Rather than including one or two JS files it looks like you need to include several folders of assets, and it will be hard to get this one working in my environment (Siebel application.) Nevertheless, Im trying this one until I find a better solution. This cannot be served by the application Im using (Siebel) so it doesnt look like this is an option. A- Text Replace 3.2 Key Full Fledged ViewingeditingThis is a full fledged viewingediting PDF SDK that can run completely client side in the browser. The.mem file is Chromes PNaCl byte format. PDFNetJS also uses WASM for FireFox, and emscripten as a final fallback (e.g. IE11). Its a bit overkill, to support any PDF file in the world, PDFNetJS needs to be large, the PDF standard is complex and large (e.g. JPEG2000, JBIG2, CCITT, many font formats, many encodings, etc.). 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. Well, as far as I am aware the answer is still relevant and every other week someone passes through and gives it an up-vote. But if you do find a good lib or util on your travels please come back and list it. Thanks. Brilliant because of its portability, but fiendish because of the internal structure and storage mechanisms. There is no friendly DOM like with HTML. A- Text Replace 3.2 Key Portable Document FormatIf 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. Well, when the founding fathers of PDF were laying down the design, before XML, JSON, HTML and even the Internet, they werent working with todays document sharing in mind. A- Text Replace 3.2 Key Code Printing InstructionsThey 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. You would have to do this perfectly in line with the PDF standards otherwise you may find the downstream consumers of your edited PDF file crash or are unable to render it. ![]() Have a read of the PDF spec and you will see that there are an array of colorspace options that the original PDF producer can decide to use. You would have to interpret these to a reasonable device color on the screen and back, etc. To keep fidelity with the PDF you will need to realise the glyphs as vector graphics on your drawing surface at the scale defined in the PDF.
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