Merge PDF Files Online Free

Combine (merge / join) unlimited PDFs into one document online free — drag to reorder pages, preview and export. Private, in-browser. Join two PDFs or hundreds, on Mac, Windows, iPhone & Android.

Drop your PDFs here

or press Ctrl+V to paste

PDFs • No file limit • Sequential

or

🔒 Secure - processed locally in your browser, never stored or reused.

How to Merge PDF Files Online Free

Step 1

Upload PDF Files

Click the upload area or drag and drop as many PDF files as you need into the browser.
Step 2

Arrange and Configure

Drag files to reorder them, enter page ranges for each file, and select merge mode.
Step 3

Merge and Download

Click the Merge button, wait a moment, then download your combined PDF file.

AFFLIGO Merge vs Smallpdf & iLovePDF

AFFLIGO
  • ✓100% in-browser merge (pdf-lib)
  • ✓Per-file page ranges free (1-5, 8, 10-12)
  • ✓Merge + optional compress in one go
  • ✓Drag-to-reorder, no signup
Smallpdf
  • ✗Merge runs on servers
  • ✗Page ranges need Pro
  • ✗No merge+compress flow
  • ✗2 free jobs daily
iLovePDF
  • ✗Merging happens on servers
  • ✗Advanced picks need Premium
  • ✗Compress step is separate
  • ✓25 merges/day, 100MB cap free
Compare All Free Methods (Mac, Windows, Phone)

Frequently Asked Questions

No. All processing happens directly in your browser using pdf-lib. Your files never leave your device - fully private.
After uploading, each file shows a text input on the right. Type page ranges like 1-5, 8, 10-12. Leave blank to include all pages. The total page count updates automatically. Need the reverse? Extract pages with our Split PDF tool.
Yes. You can merge PDFs that have an open password if you provide the password during upload. PDFs with owner restrictions can still be merged - restrictions are preserved in the output. If you need to remove the password first, use our Unlock PDF tool.
You can add as many PDF files as you need - they process one by one. There is no fixed file count cap, but each file can be up to 1 GB. Whether you join two PDFs or combine hundreds, processing speed adapts to your device.
This mode takes all pages from your PDFs and stacks them vertically or horizontally into a single, continuous page. Useful for creating a scrollable overview of multiple documents.
No. There is no account, no email wall, and no download gate — the merged file saves straight to your device. Everything works signed-out, forever.