<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>jwatt</author><text>From what I understand this wasn&amp;#x27;t so much about bundling everything into the web browser. It was more about the handling of links to PDF files that are served with `content-disposition:attachment` to get the browser to open the &amp;quot;choose an app to open this file&amp;quot; system dialog. Without Firefox being registered with the system as an app that could open PDF files, users wouldn&amp;#x27;t be given the option to open it with Firefox (often they&amp;#x27;d be prompted to open it using Edge). That was annoying people.&lt;p&gt;Regarding your security concern, Firefox&amp;#x27;s PDF viewer is PDF.js. Parsing PDF files in a JS sandbox and rendering it to an HTML &amp;lt;canvas&amp;gt; in a sandboxed process should be more secure than rendering it using an unsandboxed app that parses&amp;#x2F;renders using system APIs.</text><parent_chain><item><author>jxy</author><text>Can they just give me an actual PDF viewer for the sole purpose of PDF viewing?  Is it really the way forward?  Bundling everything into a web browser?  It feels like a giant security hole.</text></item><item><author>ocdtrekkie</author><text>&amp;quot;Firefox can now be set as the default system PDF viewer.&amp;quot;&lt;p&gt;Neat. I loathe every time I have to install Adobe Reader for something. Unfortunately, all browsers PDF support for things like form filling and stuff tends to be pretty lacking.</text></item></parent_chain></comment><story><title>Firefox 80</title><url>https://www.mozilla.org/en-US/firefox/80.0/releasenotes/</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>pheug</author><text>I&amp;#x27;d actually consider browser pdf viewers &lt;i&gt;safer&lt;/i&gt; than a standalone native app. Firefox uses pdfjs, a pure javascript pdf implementation running inside a battle-tested browser javascript sandbox. No unsafe native pdf code with countless holes.</text><parent_chain><item><author>jxy</author><text>Can they just give me an actual PDF viewer for the sole purpose of PDF viewing?  Is it really the way forward?  Bundling everything into a web browser?  It feels like a giant security hole.</text></item><item><author>ocdtrekkie</author><text>&amp;quot;Firefox can now be set as the default system PDF viewer.&amp;quot;&lt;p&gt;Neat. I loathe every time I have to install Adobe Reader for something. Unfortunately, all browsers PDF support for things like form filling and stuff tends to be pretty lacking.</text></item></parent_chain></comment><story><title>Firefox 80</title><url>https://www.mozilla.org/en-US/firefox/80.0/releasenotes/</url></story>