Hello, Codeforces!

Check the graph preview tool — Graph Editor

Uses Simulated Annealing algorithm; Shows good results on planar and almost planar graphs.

Features:

• easy input copy/paste;

• random graph generator;

• highlighting adjacent vertices on hover;

• save as png.

Please leave your feedback and links to similar tools in the comments below.

At the moment I know about these:

• CS Academy Graph Editor

• miska924 DrawGraphJS: Try here; or Check github page