I have build a couple of "web tools" (mini-apps) recently that do not require Visio to be installed, so started a new website here, to collect such things. So, welcome to Visio Web Tools:
As of now, these tools are available:
Extract media from Visio files. This one appeared from this topic and aims to extract all media files from a VSDX file.
PdfTip, available as an in-browse app. It adds tooltips (comments) to a PDF from Visio file.
Appreciate your ideas for new tools, that can run in a browser.
The GitHub for the project is here!