How to merge PDF files into one, and get the page order right
Application portals and offices often ask you to upload a single file. If your ID copy, certificates and cover letter are separate PDFs, you need to merge them. Merging is easy, but a jumbled order or a sideways page makes the result hard to read. Here is how to merge PDFs and what to check before and after.
Name your files before merging
The more files you have, the harder it is to order them by hand. Numbering the file names first saves time.
- Start names with two digits, such as
01_application.pdf,02_reference.pdf,03_certificate.pdf. - With single digits (1, 2, 10), name sorting may put 10 before 2.
- If the instructions list a required order, number the files in that order.
Merging step by step
- Open the Merge PDF tool below and drop all the files at once. You can add more later.
- Check the order in the list. Drag items or use the up and down buttons, or sort by name.
- Choose a file name and click merge. A single PDF is downloaded.
Files are processed only inside your browser and are never uploaded, which matters when the documents contain personal information.
Three things to check after merging
1. Page orientation
Scanned pages or phone photos are sometimes sideways. You can rotate them on screen, but the reader would have to do that every time. Rotate those pages 90 degrees in the page organizer so they sit upright.
2. Missing or duplicate pages
It is common to add the same file twice or to have a blank page inside an original. Check that the total page count is what you expect and delete pages you do not need.
3. File size
Merged files can get large enough to hit an upload limit. If you merged many scans, run the result through a PDF compressor once.
Common problems
- Password-protected PDFs: a file that asks for a password when opened cannot be merged. Save an unlocked copy in the original app first.
- Photos mixed in: convert JPG or PNG files with Image to PDF first, then merge.
- Only some pages needed: use Split PDF to pull out the pages you want, then merge.
Merge, organize, compress: those three steps cover most document submissions. Flip through the finished file once from start to end before sending, and you will catch almost every mistake.