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Local PDF processing with limitations stated
PDF Merger
Merging appends complete PDFs in the order shown: if PDF A has pages 1–3 and PDF B has pages 1–2, the output order is A1, A2, A3, B1, B2.
- Add your PDFs
- Set the order
- Download
Arrange your documents
Merge PDFs 0/20
Reading your PDFs…
All merge, ordering, preview, and download controls are available without an account.
Merge complete
Your PDF is ready
The finished file stays available in this tab until you start another batch or leave the page.
Counted with the browser's own PerformanceObserver, from the moment this page finished loading. Every request is counted, including this site's analytics — a counter that ignored some requests would not be worth reading.
Check it yourself: open DevTools (F12 or ⌘⌥I), pick the Network tab, tick Preserve log, then use the tool. Your file will not appear as an upload. Filter by Fetch/XHR to see requests the page made rather than assets it loaded.
How to Merge PDF Files Online — 3 Easy Steps
- Add filesChoose two to 20 PDFs, up to 50 MiB each.
- Set the orderUse Move up and Move down. These buttons work with a keyboard and do not require drag gestures.
- Merge and verifyCreate the new document, download it, then check page order and any advanced PDF features you rely on.
Frequently Asked Questions
Does merging change my original PDFs?
No. The tool reads the originals and creates a separate output PDF.
Can I change the order before merging?
Yes. Use the Move up and Move down buttons; the list order is the merge order.
Are different page sizes preserved?
The merge process keeps each copied page’s dimensions instead of forcing every page to A4 or Letter.
What happens to bookmarks and forms?
They are not guaranteed in the new PDF. Verify advanced document features after merging.
Can I merge a password-protected PDF?
No. Encrypted or password-protected PDFs are rejected rather than unlocked or bypassed.