How to contribute

Getting help

Community discussion, questions, and informal bug reporting is done using discussions. You may also seek help on StackOverflow.

The preferred way to report bugs is to use the GitHub issue tracker. Before reporting a bug, read these pointers.

Please search inside the bug tracker to see if the bug you found is not already reported.

Note: The issue tracker is for bugs and feature requests, not requests for help. Questions should be asked through discussions instead.

dompdf is maintained by volunteers. They don't owe you anything, so be polite. Reports with an indignant or belligerent tone tend to be moved to the bottom of the pile.
Include information about the PHP version on which the problem occurred. Even if you tested several PHP version on different servers, and the problem occurred in all of them, mention this fact in the bug report. Also include the operating system it's installed on. PHP configuration can also help, and server error logs (like Apache logs)
Mention which release of dompdf you're using (the zip, a specific branch, etc). Preferably, try also with the current development snapshot, to ensure the problem has not already been fixed.
Mention very precisely what went wrong. "X is broken" is not a good bug report. What did you expect to happen? What happened instead? Describe the exact steps a maintainer has to take to make the problem occur. We can not fix something that we can not observe.
If the problem can not be reproduced in any of the demos included in the dompdf distribution, please provide an HTML document that demonstrates the problem. There are a few options to show us your code:
- JS Fiddle
- dompdf debug helper (provided by @bsweeney)
- Include the HTML/CSS inside the bug report, with code highlighting.

Make sure you have a GitHub Account
Fork dompdf (how to fork a repo)
Make your changes on the master branch or the most appropriate feature branch.
Add a unit test in the test/Dompdf/Tests/ directory.
Submit a pull request (how to create a pull request)

To create a release:

php bin/create-release.php