PDFTron html2pdf 0KB file size

Question

I have the @pdftron node module installed in a test Node (Hapi) application on my Mac. I'm trying to generate a PDF file from a HTML string but the saved file is 0 KB. I've tried this two ways:

By implementing the example code in the GET handler for a route configured in index.js
By running the sample scripts that are installed at node_modules/@pdftron/pdfnet-node/samples/HTML2PDFTest/NODEJS/HTML2PDFTest.js

In both cases, any new PDFs that are saved have a size of 0KB and any existing PDFs that are supposed to be modified by the process remain unchanged.

I've checked that the html2pdf module library path is being set correctly.

The route handler code is as follows, which is in accordance with example code provided by PDFTRon.

server.route({
    method: 'GET',
    path: '/pdftron/html',
    handler: (request, h) => {

        const { PDFNet } = require('@pdftron/pdfnet-node/lib/pdfnet.js')

        const main = async () => {
            await PDFNet.initialize()
            await PDFNet.HTML2PDF.setModulePath('node_modules/@pdftron/pdfnet-node/lib')
            const output_path = '/tmp/'

            try {

                const html2pdf = await PDFNet.HTML2PDF.create();
                const doc = await PDFNet.PDFDoc.create();
                const html = '<html><body><h1>Heading</h1><p>Paragraph.</p></body></html>'
        
                html2pdf.insertFromHtmlString(html);
                await html2pdf.convert(doc);
                doc.save(output_path.concat('pdf2html.pdf'), PDFNet.SDFDoc.SaveOptions.e_linearized);

            } catch (err) {
                console.log(err)
            }

        }
    
        PDFNet.runWithCleanup(main, 0).then(function () { PDFNet.shutdown(); })
        return 'PDF2HTML Test'
    }
})

Any thoughts/suggestions would be much appreciated.

I recently used `puppeteer` package for html2pdf conversion and it worked perfectly for me — Arjun Singh, Aug 24 '20 at 12:26
Thanks, we've tried that but want to avoid having to use headkess Chrome and using screenshots. We need more control and also PDF/A compliance — Nick Roper, Aug 24 '20 at 14:03
Yup, I already had and was waiting for feedback - see update below. — Nick Roper, Aug 25 '20 at 08:14

score 1 · Answer 1 · answered Aug 25 '20 at 07:10

Update on this - I had feedback from PDFTron to say that there is currently an issue with the current stable release of the Mac OS build and that they are addressing it.

In the meantime, they pointed me to the nightly experimental builds here. I downloaded and installed a recent experimental build and the PDF files now save OK using that.

PDFTron html2pdf 0KB file size

1 Answers1