Krzysztof Kowalczyk

How to get in touch with me

I love getting feedback, bug reports etc. about my software and my websites. Send me an email to

If it's about SumatraPDF, use forum for questions or submit bug reports and feature requests.

If you want to send a quick message, anonymously:

Note: I can't get back to you unless you also include your e-mail address in the message.

Krzysztof Kowalczyk