Merge PDF Files Online – Free & Private

Combine multiple PDFs into one document in seconds. Drag to reorder pages, then download. Free and unlimited, and your files never leave your browser.

Drop PDF files here or click to browse

Select multiple PDF files to merge

PDF · max ⁦500 MB⁩ each

Files are processed locally in your browser and never uploaded

Add at least 2 PDF files first

Merge PDF lets you combine several PDF files into a single, orderly document without installing software or uploading to a server. Add the files you want, drag them into the right sequence, and download one merged PDF in seconds.

Everything runs in your browser, so your contracts, reports, and worksheets never leave your device. Each file can be up to 500MB, and the original files stay untouched on disk. The combined file keeps the original page size and orientation of each source, so nothing shifts out of place.

Need only some pages from a file first? Extract Pages can pull them out before you merge.

Good to know

  • Each PDF can be up to 500MB; the real limit is your device's memory, because merging happens in your browser.
  • You need at least two PDFs. Password-protected or encrypted files cannot be merged; remove the password first.
  • Pages keep their original size and orientation.
  • Nothing is uploaded: the merged file is built in your browser and downloaded directly.

How it works

01

Add your PDFs

Drop multiple PDF files into the upload area or click to browse. You can add as many files as you need in one go.

02

Drag, use arrows, or sort by name

Drag files by their handle, use the up and down arrows, or sort by file name to set the exact order you want in the final document.

03

Merge and download

Click Merge PDFs and download the combined file. No account, no email, no waiting queue.

Common use cases

Assemble client proposals

Join a cover letter, pricing sheet, and scope of work into one polished PDF before sending it to a prospect.

Combine scanned contracts

Merge several signed scans that arrived as separate emails into a single archive-ready contract.

Build course materials

Stack lecture notes, lab handouts, and readings into one packet students can download once.

Frequently asked questions

Is there a limit on how many PDFs I can merge?

There is no fixed limit. The constraint is your device available memory, since all merging happens locally in the browser.

Will merging reduce the quality of my PDFs?

No. Merging copies the original pages into a new container without re-encoding images or text, so quality stays identical to the source files.

Can I reorder files after adding them?

Yes. Drag files by their handle, use the up and down arrows next to each file, or sort by file name to set the merge order before you click the merge button.

Related tools

Split PDF

Split a PDF into multiple files by page ranges. Each range becomes its own downloadable document.

Extract Pages

Select and extract specific pages from a PDF into a new, smaller document.

Compress PDF

Reduce PDF file size while keeping quality. Choose a quality tier (low, medium, or high) or enter an exact target size in KB or MB.