Is there a downside to adding metadata to a PDF?

[margf90845199]

Is there such thing as "too much" metadata? Does metadata contribute to overall file size? Could too much metadata result in slower download time?

[Dov Isaacs · Accepted solution]

There is no limit to how much metadata can be in a PDF file. For certain PDF subset standards such as PDF/X, PDF/A, and PDF/VT, metadata plays a key role.

Metadata isn't free! Every byte of metadata adds one byte to the PDF file size and the larger the file size, the longer it takes to download a file. Duh!!! 

          - Dov