Exporting frames PDF with lossless PNG raster images?

Hi everyone,

I’m trying to export frames to PDF with the raster images as losseless, uncompressed PNGs. I know this is possible because on a very similar project last year, I was able to export the frames that way. As of right now, the PDFs are exporting the raster images with heavy compression/artifacting. I need the export to be PDF as well so the font/text stay vectors. What should I do?

Thank you!