Contact

Request a tool or a feature

If a tool you need does not exist here — or an existing one does not do what you need — email me what you are trying to do. One sentence is enough to start.

Email a request

What happens next:

1. I read every request personally.
2. I evaluate whether it fits the site and reply by email either way — if it does not fit, I will say so and explain why.
3. If I build it, it ships free for everyone. Requests and replies cost nothing.

Prefer plain email? Write to yuhang19890101@gmail.com — same inbox, same person.

Bugs and questions

Found something broken or have a question about a tool? Same address: yuhang19890101@gmail.com. Include the page name and what you expected — it speeds up the fix.