Although there is no actual file size limitation, large pdfs will be slow to upload, and slow to impose. If you are trying to impose a particularly large file and are experiencing problems, please contact us. We would be very interested to know how large the file is and exactly what sort of problems you are having.
Something we haven't discovered yet…
Impose online is a new service. We will be very interested in problems you may experience, or extra features you would like added. Please contact us with your concerns and/or suggestions.