The PNG Guide is an eBook based on Greg Roelofs' book, originally published by O'Reilly.

How to Contact Us

Any information in this section referring to O'Reilly & Associates was valid only for the original, paper edition of the book. For this (HTML) version, the author may be contacted at:

roelofs @

The original text follows.

We have tested and verified all of the information in this book to the best of our ability, but you may find that features have changed (or even that we have made mistakes!). Please let us know about any errors you find, as well as your suggestions for future editions, by writing:

O'Reilly & Associates, Inc.
101 Morris Street
Sebastopol, CA 95472
800-998-9938 (in the U.S. or Canada)
707-829-0515 (international/local)
707-829-0104 (fax)

You can also send us messages electronically. To subscribe to the mailing list or request a catalog, send email to:

To ask technical questions or comment on the book, send email to:

In addition, the author has set up a web page to support users of the book at:

This web page includes the complete source code for the demo programs described in Part III, "Programming with PNG" and may include additional fixes, improvements, new ports, and contributions. The page also includes an errata list. If the link ever breaks, check the following page for a pointer to the new location:

Last Update: 2010-Nov-26