When 4 MB helps
Use it for clearer scans and images
A 4 MB target can help preserve small text, signatures, stamps, and photo detail when a smaller target would make the document difficult to read.
4 MB targetReadability-friendly
Prepare a PDF for a 4 MB upload limit
4 MB can be a readability-friendly target when the actual upload workflow allows it. It gives more room for scans, photos, and multi-page PDFs than 1 MB or 2 MB.
Do not over-compress
Smaller is not always better
If the upload allows 4 MB, forcing the PDF toward 1 MB or 2 MB can reduce readability without helping the upload. Start with the real limit shown by the workflow.
Prepare first
Use the extra room for relevant pages
Review pages, delete unrelated material, merge only documents that must be together, and add required photos or visible signature marks before choosing the final target.
Related workflow
Check the prepared version
Related pages: exact PDF size targets, 2 MB PDF, 12 MB PDF, merge files, and review before export.
Boundary: 4 MB is a target inside PDF Ready, not a universal upload rule. Use the instructions shown by the destination workflow.