A message that bounces because the attachment is too large wastes time, often at the worst moment. Email providers limit attachment sizes, and the limit differs between services, so check yours. The reliable fix is to make the files smaller before you attach them. This guide shows how to do that with the tools on MZScan.
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Open the image compressor →A PDF built from phone photos is as heavy as the photos inside it. Ten photos of four megabytes each make a PDF of about forty megabytes, which most email services will refuse. Shrinking the pictures first is the most effective step.
Add the smaller images to Image to PDF, choose A4, a Small margin and Normal quality, and press Create PDF. The new file is usually a small fraction of the first one. Note that MZScan does not compress an existing PDF, so rebuild it from the reduced images.
If the PDF is still above the limit, split it into two or three parts. In PDF Tools choose Keep only these pages, type a range such as 1-5, and download. Repeat with 6-10 and so on. Send the parts in separate messages and tell the receiver how many parts there are. More on page ranges in extract, delete or rotate pages.
Look at the file size in your file manager and compare it with the provider's limit. Leave a safety margin, because the message itself and the way attachments are encoded add some weight.
Why does my PDF stay large after I rotate or merge it?
Those tools keep the page images as they are. Only reducing the images before you build the PDF makes it smaller.
What size is safe for email?
The limit differs between services. Check yours and stay clearly under it.
Will my documents still be readable after compression?
Yes at 150 to 300 KB per page for normal text documents. Always open the result and check small print.
Your files stay on your device. Nothing is uploaded.
Open the image compressor →