Embedding SVG in PDF (exporting SVG to PDF using JS)
The starting points: I don't have a server that can provide anything but static files. And I have an SVG element (dynamically created) in my <body> that I want to export to a vector format, preferrably PDF or SVG.
I started looking at using the already existing lib jsPDF along with downloadify. It worked fine. Unfortunately, this does not support SVG, only text.
I've read about the PDF format's possiblities to embed SVG images, and it seems to have been enabled since Acrobat Reader 5 (along with the ImageViewer plugin). But it doesn't work. I've tried with 3 different PDF readers without success.
Does this mean that PDFs has dropped SVG embedding support? I haven't found anything on this.
I have two questions; can this be solved? And if yes, what are the specifications for embedding SVG inside of a PDF? With that info, I can build that support in jsPDF myself.
The browser support demands are Safari, Chrome and Firefox. The versions that suppo开发者_Go百科rts SVG.
For anyone looking for a JS-only solution: PDFKit seems to be the superior solution to generate PDF from JS these days, and it supports all SVG geometry primitives (including interpreting path geometry strings) out of the box. All that would be needed to render existing SVG content would be a DOM-walker that keeps track of CSS styling and inheritance, if you do not require complex stuff like symbols etc.
I wasn't successful with the sketchy SVG support of the jsPDF/svgToPdf combo mentioned in the other answer, and the source code of these two didn't look very well-crafted and complete to me.
Edit: Usage example JSFiddle
I'll reply to my own question. I ended up using DocRaptor that can be called client-side from JavaScript. This technically solves my problem, even though it is a non-free solution. If I the answer could be a server-side-solution, I could use wkhtmltopdf as proposed by Mic.
jsPDF has a plugin for that: svgToPdf:
https://github.com/ahwolf/jsPDF/blob/master/jspdf.plugin.svgToPdf.js
I haven't tried it, but this could allow discarding the use of an external API and/or having to rely on a server-side solution.
Did you try WKHTMLTOPDF? It's a free tool based on webkit.
We wrote a small tutorial here.
On a Mac, with Safari or Chrome, you can save an HTML page with embedded SVG to a PDF.
Since these browsers use WKHTMLTOPDF internally, may be this will work for you as well.
Minimal example using pdfkit, svg-to-pdfkit and blob-stream, that downloads an SVG DOM element as a PDF.
- Import packages in your
index.html.
<script src="https://cdn.jsdelivr.net/npm/pdfkit@0.10.0/js/pdfkit.standalone.js"></script>
<script src="https://bundle.run/blob-stream@0.1.3"></script>
<script src="https://cdn.jsdelivr.net/npm/svg-to-pdfkit@0.1.8/source.js"></script>
- Run this function, where
svgis an SVG DOM element, or SVG string.
function downloadPDF(svg, outFileName) {
let doc = new PDFDocument({compress: false});
SVGtoPDF(doc, svg, 0, 0);
let stream = doc.pipe(blobStream());
stream.on('finish', () => {
let blob = stream.toBlob('application/pdf');
const link = document.createElement('a');
link.href = URL.createObjectURL(blob);
link.download = outFileName + ".pdf";
link.click();
});
doc.end();
}
EVO HTML to PDF Converter has support for converting the SVG embedded in HTML to PDF. You can see an example for this feature here : http://www.evopdf.com/demo/HTML_to_PDF/HTML5_Features/SVG_to_PDF.aspx . The sample code for this is:
// Create a HTML to PDF converter object with default settings
HtmlToPdfConverter htmlToPdfConverter = new HtmlToPdfConverter();
// Convert the HTML page with SVG to a PDF document in a memory buffer
byte[] outPdfBuffer = htmlToPdfConverter.ConvertUrl(urlHtmlWithSVG);
// Send the PDF as response to browser
// Set response content type
Response.AddHeader("Content-Type", "application/pdf");
// Instruct the browser to open the PDF file as an attachment or inline
Response.AddHeader("Content-Disposition", String.Format("attachment; filename=SVG_to_PDF.pdf; size={0}", outPdfBuffer.Length.ToString()));
// Write the PDF document buffer to HTTP response
Response.BinaryWrite(outPdfBuffer);
// End the HTTP response and stop the current page processing
Response.End();
加载中,请稍侯......
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