# Visualization Tools¶

nGraph provides serialization and deserialization facilities, along with the ability to create image formats or a PDF.

When visualization is enabled, svg files for your graph get generated. The default can be adjusted by setting the NGRAPH_VISUALIZE_TRACING_FORMAT flag to another format, like PNG or PDF.

Note

Large graphs are usually not legible with formats like PDF.

Large graphs may require additional work to get into a human-readable format. On the back end, very long edges will need to be cut to make (for example) a hard-to-render training graph tractable. This can be a tedious process, so incorporating the help of a rendering engine or third-party tool like those listed below may be useful.