Free PDF Merger — Combine PDF Files
Combine up to 20 PDFs into a single file, in the order you choose. Free for 2 merges per day; files are processed in memory and never stored.
Frequently Asked Questions
In what order are the PDFs combined?
Top to bottom as shown in the list. Use the ↑ and ↓ buttons next to each file to reorder before merging.
Are my PDFs uploaded and stored?
Files are sent to our server for merging, processed entirely in memory, streamed back as your download, and immediately discarded. Nothing is written to disk or retained.
Why is there a limit of 2 free merges per day?
Server-side PDF processing costs real resources. A one-time $2.99 unlock removes the daily limit on all four PDF tools permanently — no subscription.
Can I merge password-protected PDFs?
No — remove the password first (most PDF viewers can save an unlocked copy when you know the password). Protected files are rejected with a clear error rather than producing a broken merge.