User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0 Build ID: 20170628075643 Steps to reproduce: - Create a fresh Ubuntu 16.04 amd64 VM - Compile and install a patched cups-pdf that supports printing PDF files with text https://github.com/alexivkin/CUPS-PDF-to-PDF - Download Firefox 56.0a1-2017-07-31, start a new profile - Open a PDF file with text in it (e.g. http://www.pdf995.com/samples/pdf.pdf) using PDF.js - Use the cups-pdf printer to print the document Also tested with Firefox 55.0b13 and 52.2.1esr, all downloaded from the Mozilla FTP repos. Actual results: The final printed document is rendered completely as one image per page. The printing process makes some kind of preprocessing before cups-pdf, which can take very long for big files. I assume that this is the step where the flattening happens. Expected results: Text in printed documents remains as such. Firefox shouldn't flatten the PDF. Every other program I tested on the same machine didn't have this behaviour. In particular, Evince and Chromium produce "correct" printed PDFs with nearly no processing time.
Also happened when Nightly 57 + Win10 with Microsoft Print to PDF in pdf.js.
Status: UNCONFIRMED → NEW
Has STR: --- → yes
Ever confirmed: true
OS: Unspecified → All
Hardware: Unspecified → All
Similar issues at GitHub PDF is printed as image https://github.com/mozilla/pdf.js/issues/8075 Retain vectors and the fonts when rendering https://github.com/mozilla/pdf.js/issues/6718 > There is an open project for an SVG back-end (https://github.com/mozilla/pdf.js/projects/2) that would allow us to print vectors instead of images, but it's still a work in progress. SVG backend kanban https://github.com/mozilla/pdf.js/projects/2 https://github.com/mozilla/pdf.js/tree/master/examples/svgviewer
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