We welcome feedback about usability and defects in the PDF tools. To describe a problem, include the tool name, the steps you followed, the browser and the operating system version when known.
For privacy, do not send passports, contracts, passwords or sensitive documents when asking for help. A description is usually enough to investigate a general defect.
You can open the public developer profile on GitHub using the link below. This is not an instant support channel; a dedicated contact email can be added by the site owner before launching direct support.
We aim for transparent behavior and reproducible results, and revise tool descriptions when functionality changes.