Bug reports and drawings that convert badly are the most useful thing you
can send — they are how the converter gets better. Feature requests and
plain questions are welcome too.
Before you write
A drawing that will not convert is a bug worth reporting — but check the
converter page FAQ first, since size limits and DWF
files are covered there.
DWF files are not supported on purpose. DWF is a published-plot format
without editable geometry; ask the sender for the source DWG or DXF.
Large drawings (tens of thousands of entities) plot slowly. That is
expected, not broken — converting to DXF instead is much faster.