Contact
We read everything that arrives, and we reply to most of it.
What to include
Reporting an out-of-date specification
This is the most useful message you can send. Include the page URL, the figure you believe is wrong, and a link to the official source with the correct value. We will verify, update, and re-date the page.
Reporting a tool problem
Tell us the page, your browser and version, and what happened. If a file failed to process, describe its format and approximate size — please do not attach the file itself, as we have no need for it and would rather not receive it.
Requesting a tool
Tell us the exact requirement you are trying to meet and where it is published. Specifications with an official source behind them are the ones we can build reliably.
Response time
This is a small operation, so allow a few working days. Specification corrections are prioritised over everything else.