PDF/A file size

Creating PDFs using one of the PDF/A types results in a tenfold increase in file size (~40KB to ~400 KB). The PDF only contains text and some SVG images. The increase apparently stems from the color space.

Is there anything that can be done to reduce the file size?

PDF/A-3b

PDF

Hi,
PDF/A need to embed(subset) fonts, ICC profiles, etc… So it will increase the file size.
By the way, the size difference could also be explained if you are using a CMYK ICC profile. It needs more space than RGB profile.
You could check ICC profiles that are embeded with a tool such as Acrobat Pro.
Regards.

I’m not using any specific color profile, at least to my knowledge.

According to the output intent in Adobe Acrobat the color profile is called “U.S. Web Coated (SWOP) v2” which seems to be a CMYK profile.

Is there any way to adjust the color profile in the output preset?