Contact us

We’d love to hear from you, whether you’ve found a bug, have an idea for a new tool, or want to tell us what you use the site for.

Reporting a bug: the tool's name, what you expected and what happened, and your browser and device. Please don't send confidential text; a small example that shows the problem is ideal.
Suggesting a tool: what you are trying to do and how you do it today. The most requested tools are added first.
Corrections: if a fact, limit or explanation on a page is wrong or out of date, tell us which page and we will review it.
Business and advertising enquiries: include your company name and website.

We usually reply within two to three working days. For privacy requests, such as questions about cookies or analytics data, see our privacy policy.