Is there a size and/or page limitation for PDFs uploaded to tFLOW?

The file size limitations are 200 inches max size (PDF limitation) and 1.9 GB file size, There is no page limitation, but there is a timeout on the server of 15 minutes.  If a file takes longer than 15 minutes to process, the server will stop the process.  If you have a very large file using a complicated script, then it is recommended that you split the file into parts.