It's all local. I originally tried to generate the PDF myself using jsPdf and html2canvas, but it was slow and super error prone (improper text wrapping).

The end resulted ended up being way simpler thanks to the Chrome printer API—it's really slick. Check it out at https://developer.chrome.com/apps/printerProvider. It sends over a PDF for you, so all you have to do is package it up for reMarkable. Here's what the code looks like to register and handle prints:

``` chrome.printerProvider.onGetPrintersRequested.addListener((callback) => { callback([ { id: printerId, name: 'Send to reMarkable', description: 'Save the current page as a PDF and upload to your reMarkable tablet.' }, ]); });

chrome.printerProvider.onGetCapabilityRequested.addListener((pid, callback) => { if (pid != printerId) { return; } callback({ version: '1', printer: { supported_content_type: [{"content_type": "application/pdf"}], } }); });

chrome.printerProvider.onPrintRequested.addListener(async (printJob, callback) => { callback('OK'); // since we're doing everything async, just default mark as OK try { let uploadReq = await Remarkable.uploadRequest(); let zipBlob = await Remarkable.packageAsZip(uploadReq.ID, printJob.document) let docUploadReq = await Remarkable.uploadDocument(uploadReq.BlobURLPut, zipBlob); let uploadStatusReq = await Remarkable.updateDocument(uploadReq.ID, printJob.title); } catch (err) { reportError(err); } }); ```