How to submit bug reports

Did you find a bug in Sumatra? Create a bug report in our bug tracker.

Does it involve a specific PDF? It's important to provide us with a PDF that shows the problem by e.g. uploading it to ge.tt or attaching to a bug report.

If the PDF (or other information) is confidential, you can e-mail it directly to SumatraPDF developers: zeniko@gmail.com (Simon Bünzli) and kkowalczyk@gmail.com (Krzysztof Kowalczyk).