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PDF & Documents

PDF Merger

Combine multiple PDF files into a single document. Drag to reorder, then merge — 100% in your browser.

100% Client-Side — files never leave your device

What is PDF Merger?

PDF Merger is a free online tool that lets you combine two or more PDF documents into a single file. Unlike other tools that upload your files to a server, our merger processes everything directly in your browser using JavaScript — your files never leave your device. Simply drag and drop your PDFs, reorder them as needed, and download the merged result instantly. No signup, no file size limits, no watermarks.

How to Use PDF Merger

  1. 1

    Upload PDFs

    Click the upload area or drag and drop 2 or more PDF files. You can also paste from clipboard with Ctrl+V.

  2. 2

    Reorder files

    Drag the grip handles to arrange files in the order you want them merged. The first file becomes the first pages.

  3. 3

    Click Merge

    Hit the merge button (or press Ctrl+Enter). The tool combines all pages from each PDF in sequence.

  4. 4

    Preview result

    Review the page count and file size of the merged document to ensure everything looks correct.

  5. 5

    Download

    Click Download to save the merged PDF to your device. The original files remain unchanged.

Features

  • Merge unlimited PDF files at once
  • Drag-and-drop reordering of files
  • Page count shown per file before merge
  • 100% client-side — files never uploaded
  • No file size limits whatsoever
  • No signup or account required
  • Preserves all formatting, links and bookmarks
  • Works on mobile and desktop browsers

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Frequently Asked Questions

Is it safe to merge PDFs online?+
Yes — our tool processes files entirely in your browser. Nothing is uploaded to any server. Your documents stay private on your device.
How many PDFs can I merge at once?+
There is no hard limit. You can merge dozens of PDFs in a single operation. Very large batches may take longer depending on your device.
Will the merged PDF lose quality?+
No. The merge is lossless — all pages, images, fonts, and links are preserved exactly as they are in the original files.
Can I reorder the files before merging?+
Yes. Drag the grip handles on the file list to arrange them in any order. The merged PDF follows this sequence.
Does it work on mobile?+
Yes. The tool works on any modern browser including Chrome, Safari, and Firefox on both mobile and desktop.
Is there a file size limit?+
No server-side limit. Since everything runs in your browser, the only limit is your device memory. Files up to 100MB+ work fine on most devices.
Can I merge password-protected PDFs?+
Not directly. Use our PDF Unlocker tool first to remove the password, then merge the unlocked files.
Do I need to create an account?+
No. The tool is completely free with no signup, no email, no tracking. Just upload and merge.