Hi @Maumus_Laurent , thank you for your feedback!
In the meantime, here a workaround to reduce the size: Export pdf - #2 by Gleb
(Export pdf - #2 by Gleb):
https://www.figma.com/community/plugin/789009980664807964/TinyImage-Compressorcan reduce the PDF size.
Also you can find lots of apps on the web that can compress PDFs online. And you can try to open the PDF in Preview on your Mac and export it again (not simply save) — this may help reduce the size too.