Merge PDFs.
Combine any number of PDFs into one clean file. Drag them in, re-order, press merge. No uploads, no accounts, no watermarks, no page limits. Your device does the work.
Files never leave your devicePrivacy · Enforced No sign-up No watermarks No page limits
Drop PDFs here.
Or . They stay on your device — the "Merge" button runs inside this tab.
PDF · up to as many as your RAM allows
§02 · Procedure
Merging, start to finish.
Three steps. None of them involve a server.
- Step 01 1
Drop the PDFs.
Drag any number of files onto the drop zone. They load into memory locally.
- Step 02 2
Re-order if needed.
Drag list items up or down. The top of the list becomes page 1 of the combined document.
- Step 03 3
Merge & save.
Hit "Merge & download". A single combined PDF lands in your downloads folder seconds later.
How many PDFs can I merge at once?
There's no hard cap. In practice you're limited by how much your browser tab can hold in memory — a few hundred megabytes is usually fine.
Will the merged file lose quality?
No. Merging copies pages byte-accurately using pdf-lib. Text, vectors, annotations and images survive intact. No rasterization.
Can I merge password-protected PDFs?
Not at the moment. If a file is encrypted, you'll get an error. Remove the password in your native PDF viewer first, then come back.
Are form fields and signatures preserved?
Most interactive form fields and existing signatures carry over. If you need to re-sign the merged file, do that in your signing tool of choice afterwards.
Is there a size limit?
No artificial limit. If your browser is happy to hold the inputs, we're happy to merge them.
§05 · See also