I am trying to convert a pdf to excel and keep getting conversion failure. The document is 480 pages, is it too big?
It doesn't matter how many pages you have got into the file. What matters is, file size shouldn't be more than 100MB, because Adobe Document Cloud has a file upload limit upto 100MB.
For conversion error message, you may refer to the related discussion here: Conversion Failure PDF to Word and try the troubleshooting steps suggested.
Let us know the result.