If the output size of .pdf is your concern, I suggest you export your figure with matplotlib in .eps, and then use the command line tool « epstopdf » shipped with any LaTeX distribution.
The .pdf backend of matplotlib is far from being optimized.
I always observe a factor of size decrease between 10 and 100 (!) in the output .pdf after running epstopdf, instead of saving directly in pdf.
From: fiolj <firstname.lastname@example.org>
To: matplotlib-users <email@example.com>
Subject: [Matplotlib-users] large pdf files
Content-Type: text/plain; charset=windows-1252
Hi, checking on sizes of pdf files I noticed that in my system currently
pdf output are at least 370k when similar plots previously were about 20k.
I tested with an old figure (I do not matplotlib version but was created
about May 2019) and the figure was 15409 bytes while the same figure
with matplotlib version 3.2.2 has a size of 429110 bytes.
I checked and this happens even plotting a few (ten) points with line,
everything using default values.
My user configuration file has not been modified but my system may have
I've found similar reports but regarding much older versions.
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