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Free PDF tool

Merge PDF Files

Combine multiple PDFs into one document in seconds, right in your browser. Drag and drop your files on the left, reorder them, then merge and download the result on the right.

Working field

Upload PDFs, reorder them, and merge.

Upload PDFs

Drag & drop PDF files here or click to upload

Only PDF files supported

Result

Your merge summary appears here.

Your uploaded PDFs will be listed here. Add at least 2 files, then click Merge to download the combined document.

This tool is best for combining contracts, reports, and study materials into one file.

Free Online Merge PDF Tool

Combine multiple PDF files into a single document with simple drag-and-drop control over the order. This tool keeps the workflow simple: upload and arrange on the left, supporting content below, and the sidebar on the left for popular and related tools.

Drag & drop upload

Drop your PDFs in or click to browse, then reorder them with a simple drag.

Live page preview

Click any file to preview its first page before you commit to the merge.

One-click merge

Combine everything into a single PDF and download it instantly.

Private by design

Everything runs in your browser, so your files never leave your device.

How it works

  1. Drag your PDF files into the upload zone, or click to browse.
  2. Drag the files to set the exact order you want them merged.
  3. Click any file to preview its first page on the left.
  4. Click Merge PDFs to combine them into one document.
  5. The merged PDF downloads automatically, or hit Reset to start over.

Best practices

  • Add at least two PDFs before merging, since one file has nothing to combine.
  • Check the order carefully, as pages merge top to bottom.
  • Preview each file to confirm you uploaded the right document.
  • Unlock password-protected PDFs before adding them.
  • Rotate any sideways pages first for a cleaner final file.
  • Remove duplicate or unneeded files before you merge.

Frequently asked questions

Is this PDF merger free?

Yes. It is completely free to use, with no hidden fees, watermarks, or registration needed.

Are my files secure?

Absolutely. Your files are processed entirely in your browser using JavaScript and are never uploaded to our servers, so your privacy stays intact.

How many PDFs can I merge at once?

There is no hard limit on the number of files, though performance may vary depending on your device's memory and browser speed.

Can I rearrange the order of files?

Yes. Simply drag the file thumbnails into your preferred order before clicking the merge button.

Do I need to install any software?

No software, plugins, or extensions are required. The tool works directly in any modern web browser like Chrome, Firefox, or Safari.

Can I merge password-protected PDFs?

You will need to unlock the PDF first before merging, since the tool needs access to the file content to combine it with others.

What happens if I merge files with different page sizes?

The tool keeps the original dimensions of each page, so you can combine documents even if they have different layouts or orientations.

Is there a file size limit?

There is no strict limit, but extremely large files of several hundred MBs may cause your browser to slow down during processing.

Can I use this PDF merger on my mobile phone?

Yes. The interface is fully responsive and lets you select and merge files directly from your mobile storage or cloud accounts.

How do I remove a file I uploaded by mistake?

Click the X or delete icon on the file thumbnail to remove it from the merge list before generating the final document.

Need more PDF tools? Fix sideways pages with the Rotate PDF tool, or trim unwanted sections with the Delete Pages from PDF tool.