Merge PDF
Combine multiple PDF files into a single document in the order you want.
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Merge several PDF files into one tidy document without uploading anything. Add your files, drag them into the exact order you want, and download a single combined PDF. It is perfect for stitching together reports, scanned pages, invoices or chapters. Because the merge happens in your browser with pdf-lib, your documents stay completely private.
When merging PDFs comes in handy
Combining PDFs is one of those small tasks that shows up constantly. You might be joining a signed contract with its supporting documents, stitching scanned pages that your scanner saved separately, bundling several invoices for an expense report, or assembling a portfolio from individual exports. Instead of emailing five attachments, you send one clean file that opens in order.
Getting the page order right
The order of your files decides the order of the pages in the final document, so arranging them before you merge matters. Drag the files up and down until the sequence is exactly what you want. If a file is in the wrong place, you do not need to start over; just move it and merge again. Because the whole process runs in your browser, re-merging is instant and costs nothing.
Tips for the best result
- Give your files clear names before adding them so the order is easy to read at a glance.
- If a PDF is password protected, remove the password first; encrypted files cannot be merged.
- Very large scans can use a lot of memory, so merge in smaller batches on older devices.
- After merging, open the file once to confirm the pages landed in the right order.
How to use Merge PDF
- 1
Add two or more PDF files.
- 2
Drag the files to arrange them in your preferred order.
- 3
Click merge and download your combined PDF.
Frequently asked questions
There is no hard limit. Very large merges depend on your device's available memory since everything runs locally.