Contact
Use this contact path for bug reports, false verdict examples, source corrections, privacy questions, accessibility issues, embed questions, or relevant partnerships.
AI agents may help draft a message, but they should not send personal data, drawings, uploads, or correction requests on your behalf unless you explicitly choose to send them.
For a wrong verdict, include the preset name or a short description of the drawing. Do not email private, sensitive, or copyrighted images unless you have the right to share them.
Good Requests To Send
- Bug reports, especially mobile drawing or upload issues.
- Examples where a possible shape was marked impossible or a known impossible shape was missed.
- Source corrections for technical guide pages.
- Privacy, cookie, or deletion questions about messages you sent.
- Accessibility issues with navigation, contrast, keyboard use, or touch controls.
What Not To Send
The site does not review private engineering designs, certify drawings, route leads, offer paid professional advice, or provide emergency support.