We just opened a web service that allows to render Pd patches as SVG images.
Usage is simple. Just use the following url https://enzienaudio.com/a/dave?fetch=<patchUrl> replacing
<patchUrl> by the url of your patch.
For example, here is a patch hosted on a github repository : https://raw.githubusercontent.com/mhroth/ZenGarden/master/test/MessageInteger.pd and here is the url of its rendered image https://enzienaudio.com/a/dave?fetch=https://raw.githubusercontent.com/mhroth/ZenGarden/master/test/MessageInteger.pd
I think this could be really useful on http://forum.pdpatchrepo.info as many people post pictures of patches, while this service could save you from having to make a screenshot.
The whole thing is open source. The service uses pd-fileutils to parse / render the patches (https://github.com/sebpiq/pd-fileutils) and the source code of the service is there : https://github.com/sebpiq/pd-to-image-service
This is still alpha, and we'd be really happy to get your feedback and contributions. If you find any bugs, if you want to improve the look of the rendered SVG, or anything else, please head there https://github.com/sebpiq/pd-fileutils and file an issue or send a pull request!