Merge PDF

Combine multiple PDFs into one file instantly

Drop PDF files here

or click to browse — select multiple files

Ready after processing

Merge PDF files into one — free online PDF combiner

Need to combine several PDFs into a single document? PDFToolsFree lets you merge multiple PDF files into one in just a few clicks. Combine scanned pages, chapters, invoices, or application documents into one tidy file — all inside your browser, with no uploads and no sign-up. Your files stay private on your device from start to finish.

How to merge PDF files

  1. Click Select PDFs or drag several PDF files into the drop zone.
  2. Drag the files up or down to set the exact order you want.
  3. Remove any file you don't need with the × button.
  4. Press Merge PDFs, then click Download to save the combined file.

Why use our PDF merger

Frequently asked questions

How many PDF files can I merge at once?

There is no fixed limit. You can add as many PDFs as you like and combine them into a single document. Very large batches depend only on your device's available memory.

Can I choose the order of the files?

Yes. After selecting your files, simply drag each one up or down in the list to arrange them. The merged PDF follows the order shown on screen.

Are my files uploaded to a server?

No. The merge happens entirely in your browser using JavaScript. Your documents are never uploaded, stored, or seen by anyone — they remain private on your device.

Will the quality of my pages change?

No. Merging copies your original pages exactly as they are, with no re-compression or quality loss.

Does it work on mobile?

Yes. You can merge PDFs in any modern browser on Android or iOS, the same way you would on a computer.

Have questions? Visit our FAQ →