Grease Pencil Export as PDF doesn't follow resolution settings
When exporting Grease Pencil drawings as a PDF, Blender seems to ignore the intended resolution (DPI) settings and defaults to 72 DPI.
This causes a US Letter-sized drawing set to 2550×3300 px (which should be 8.5×11 inches at 300 DPI) to render as 35.42×45.83 inches, making the PDF 4.17 times too large.
The observed PDF dimensions maybe caused by a miscalculation because Blender may divide pixel dimensions by 72 instead of the intended 300 DPI. Blender’s PDF exporter either omits DPI metadata or uses the wrong DPI value, causing PDFs to default to 72 PPI.
As a result, images designed for print appear far too large and pixelated when printed or viewed at true scale.
Is their a way to make Blender export a PDF as 300, 600, 1200 etc..DPI using 8.5x11 inches (or any dimensions) that follow the DPI?
Do a File - Export - Grease Pencil as PDF
The Paper Size should be 8.5 x 11 inches it's about 4 times larger.
A 10mm grease pencil square generated with geometry nodes was used to verify that the printed PDF matched the correct size, but the result was four times larger than intended.
The goal is to export PDF documents from Blender that print at an accurate, real-world scale, so a 20mm square in Blender measures exactly 20mm when printed from the PDF. Is there a way to make Blender export a PDF as 300, 600, 1200 etc..DPI using 8.5x11 inches (or any dimensions) that follow the DPI?
PS: I'm using Blender 5.0 on Linux
Note: I used some of this code. Grease Pencil Export Issue Curve Converted to GP Not Exporting as SVG/PDF
I also reported this as a possible bug https://projects.blender.org/blender/blender/issues/150381
Attached test blend file.
