How to use the Merge PDF
Step 1: Drop two or more PDF files onto the upload box, or tap it to choose them. You can select several at once.
Step 2: Check the list. Use the up and down arrows to change the order, and the bin button to remove a file.
Step 3: Press Merge PDFs. The new file is built in your browser in a moment.
Step 4: Press Download PDF to save merged.pdf.
Features and benefits
Any number of files
Add as many PDFs as your device can handle and combine them in one go.
You control the order
Move files up and down before merging, so the pages end up exactly where you want them.
Page counts shown
Each file lists its number of pages and size, so you can see the total before you merge.
Protected files flagged
Password-protected PDFs are pointed out with a hint to unlock them first, instead of failing silently.
Completely private
Merging happens on your device. Your documents are not uploaded or stored.
How merging works
A PDF is a container of pages. Merging copies the pages of each file, one after another, into a new container. Text, images and fonts stay as they are, so the result looks exactly like the originals placed back to back. Nothing is re-rendered or compressed.
Bookmarks, form fields and document-level settings from the individual files are not carried across, because the merged file is a fresh document built from the pages alone.
Tips for a tidy result
Name your files so they sort sensibly before you add them, and check the order list before pressing merge. If a file is password protected, unlock it first with the Unlock PDF tool. For very large merges, work on a computer rather than a phone, and if the result is too big to email, run it through Compress PDF afterwards.
Example use cases
Job and visa applications
Bundle ID copies, certificates and a cover letter into the single file a portal asks for.
Invoices and statements
Combine a month of invoices into one document for your accountant.
Study material
Join lecture notes and handouts into one searchable revision pack.
Scanned pages
Put separately scanned pages together into one complete document.
Frequently asked questions
Is there a limit to how many PDFs I can merge?
There is no fixed limit. The practical limit is your device's memory, so merging hundreds of megabytes works best on a computer.
Will merging reduce the quality?
No. Pages are copied as they are, without being re-rendered or compressed, so text and images keep their original quality.
Are my files uploaded anywhere?
No. Everything happens in your browser and the files never leave your device.
Can I merge password-protected PDFs?
Not directly. Remove the password first with the Unlock PDF tool, then merge the unlocked copies.
Can I change the order after adding the files?
Yes. Use the up and down arrows beside each file until the order is right, then merge.
Related tools
Last updated 9 November 2026.