Contact
Tell us what is broken
Bug reports, wrong results, a tool you wish existed, or a correction to something we wrote. All of it is welcome and all of it gets read.
What to expect
We read everything and reply to most things, usually within a couple of working days. There is no ticket system and no autoresponder.
Before you write
If a tool returned something odd, the two most useful details are the exact input you gave it and the browser you were using. For the page size checker, the address you were checking is usually enough.
Privacy
What you send is used to answer you and nothing else. It is not added to any mailing list. Full details are in the privacy policy.