Posted by dellus on
URL: https://forum.librecad.org/Export-to-PDF-Too-Large-File-Size-tp5717510p5717511.html

Difficult to say what's the reason without the file.
Do you have an image in it?
A lot of text?
Blocks inserted repeatedly many times?
Large areas of hatching, maybe even very dense? In the pdf every line will be an extra object.

Maybe you can't make it smaller. You may try an external pdf printer to see if the result is better.