A one-megabyte upload limit requires more than a renamed file or an estimated compression percentage. The output must remain a valid PDF that opens correctly and keeps important content readable.
PDFUAE accepts 1 MB as a custom target, tries practical local compression levels and reports the actual result. It does not claim that the target was reached when a smaller file would require an excessive loss of readability.
A safer route to a one-megabyte PDF
Remove unnecessary pages first
Reducing page count usually preserves more quality than compressing every page aggressively. Keep only the documents requested by the service.
Set a 1 MB target
Choose the PDF on the tool page and enter 1 in the size field. The engine measures each attempt instead of relying on an estimate.
Open the output
Inspect small text, stamps, signatures and images, then confirm the first page, last page and total page count.
Split when multiple uploads are allowed
If acceptable quality cannot fit within the limit and the recipient allows several files, split the attachments logically instead of making them unreadable.
One-megabyte acceptance checks
Actual size is no more than 1 MB
The PDF opens without an error
Every page is present
Numbers and stamps remain clear
The receiving service accepts the format
Small files that still fail
Checking only the download size
Size is not enough. Open and inspect the PDF after processing.
Compressing an already poor scan
A blurred photo will not improve through compression. Capture a clearer source first.
Assuming every portal uses 1 MB
Limits vary by service and can change. Use the number shown by the receiving service at submission time.