Contact

There is no support desk — messages go to one person, and they get read.

If a file will not convert

The error message on the tool page names the specific cause, and that is the single most useful thing to include. Please also mention:

• The error title shown, word for word.
• Roughly how large the file is, and where the book came from.
• Your browser and whether you were on a phone or a computer.

Please do not attach the book unless asked. Most problems are diagnosable from the error alone, and sending a file means sending us a copy of something that is yours.

Security reports

Use the same address and put “security” in the subject line. Please report privately first — see security and file handling for what is in scope.

Corrections to a guide

Software changes and menus move. If a guide describes something that no longer matches what you see, say so — that is a bug in the writing and it gets fixed.