Well, here it is: https://rawgit.com/Alhadis/Roff.js/web-demo/index.html
Some modifications were needed for web-delivery, and performance still isn't optimal, but it works. You'll need a relatively recent browser to use it (anything released within the last year should do). Few things to note before you try it: - *This is a post-processor.* Make sure you use groff's -Z switch (or troff directly) if you're testing it with your own documents. You'll need to pipe it to your system's clipboard and paste it into the *Edit Source* dialogue. Normally, Atom handles this procedure transparently by piping the editor's contents through Groff in a separate process. Webpages don't have access to system binaries (thankfully), so this is the best I can do. - *Heirloom Troff output isn't perfect.* This is a known issue I intend to fix in a future release. At the moment, the renderer is heavily reliant on the ‘w’ and ‘n’ output commands to identify where a word ends. Groff uses these sequences consistently, but Heirloom doesn't. They're also omitted from certain eqn(1) constructs which also need fixing. - *Some fonts may look different.* Browsers handle font-rendering, which means the base 35 PDF fonts won't be visible in the renderer unless they've also been installed in your system's usual fonts directory. I have this taken care of by bundling <https://github.com/Alhadis/URW-Core35-Fonts> with the editor-package all 35 URW's core fonts. For the sake of your bandwidth, I've opted *not* to embed ~3 MBs of fonts into the page: if basic fonts seem to be missing, you can probably fix it by installing the fonts from upstream <http://git.ghostscript.com/?p=urw-core35-fonts.git;a=tree;h=refs/heads/master;hb=refs/heads/master> . - *There's an issue with zooming.* This is what I'm stuck on, and when Branden offered help with matrix calculations, I decided the best way of explaining was with a working demo. If you zoom in using the *100%* menu, you'll notice you can't scroll left or upwards. That's because the page contents extend past the top-left corner of the browser window, and we all know you can't scroll past the window's origin corner. Other than that, enjoy! - John
