There are probably several ways how Microsoft Visio drawings might be exported as common PNG drawings. The easiest way is to do it with ZAMZAR online conversion service, that support great many file formats.
Convert Microsoft Visio diagram document to Portable Network Graphic.
We have found 4 software records in our database eligible for .vsd to .png file format conversion.
Microsoft Windows software - convert vsd to png on Windows
SmartDraw is a visual processor used for creation of high quality presentations, charts and graphs that can be directly exported to Microsoft Office documents, workbooks or presentations. The program contains hundreds of templates, symbols, mind maps and other graphic elements that can be used to create rich drawings.
Convert from vsd file
to png file
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned vsd to png. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert vsd to png on OS X
Microsoft PowerPoint for Mac is used to create rich and professional presentation documents. It is a part of Microsoft Office suite for Mac.
PowerPoint gives you several ways to start your next presentation using a template, a theme, a recent presentation, a not-so-recent presentation, or a blank one.
PowerPoint now supports more multimedia formats, such as .mp4 and .mov with H.264 video and Advanced Audio Coding (AAC) audio, and more high-definition content.
Multiplatform software - convert vsd to png on any platform
Inkscape is vector graphics editor that using with W3C standard Scalable Vector Graphics (SVG) file format. Inkscape supports many advanced SVG features (markers, clones, alpha blending, etc.)
LibreOffice Draw is a useful software tool for creating various drawings, diagrams and other simple graphics. It's an open source program that comes as an integral part of LibreOffice suite.