The Stack Visualizer is built and maintained by Arun Neupane, a Computer Science (CSIT) student and web developer from Parbat, Nepal. If you found a bug, want a new feature (a queue visualizer, step-by-step animation speed, more languages in the code panel), or have a question about how any of it works, I would genuinely like to hear from you. I read and reply to every message myself.
The most reliable way to reach me:
If the visualizer misbehaves, mentioning your browser and what you clicked helps me reproduce and fix it quickly. You can also open an issue on the GitHub repository. For how your data is handled, see the Privacy Policy.