Graphs created and saved using the Graph Markup Language (.graphml) can possibly be exported as images (for example in PNG format) with programs like the yED or similar. This will create a raster image of the graph which cannot be further edited with yEd or similar program, just used as a picture.
Convert Graph Markup Language source code to Portable Network Graphic.
We have found 3 software records in our database eligible for .graphml to .png file format conversion.
Microsoft Windows software - convert graphml to png on Windows
A utility for creating of high quality diagrams
Convert from graphml file format
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 graphml 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 graphml to png on OS X
A diagraming tool for OS X
Linux/Unix software - convert graphml to png on Linux
A Linux version of diagraming tool