Graphs saved in Trivial Graph format (.tgf) can be also saved as normal images, such as JPEG or PNG. This can be done in programs that can open it and work with it, for example the popular yEd diagramming tool.
Convert Trival Graph Format to Portable Network Graphic.
We have found 3 software records in our database eligible for .tgf to .png file format conversion.
Microsoft Windows software - convert tgf to png on Windows
A utility for creating of high quality diagrams
Convert from tgf 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 tgf 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 tgf to png on OS X
A diagraming tool for OS X
Linux/Unix software - convert tgf to png on Linux
A Linux version of diagraming tool