Compressing Large PDF Documents
SignatureSense will accept PDF documents of up to 25MB in size.
If your document is bigger than this, then check that it is compressed efficiently. Sometimes documents contain raw images, for example, that can be compressed with no discernible difference.
There are many ways to compress a PDF document. Below are some online tools that might help.
iLovePDF Online PDF Compressor *
* Disclaimer: External software should be checked for suitability for your needs. The above are not specific recommendations and you use them at your own risk with no liability held by SignatureSense.