Merge PDF Online

Combine multiple PDF files into a single document in the order you want. Rotate pages, drag to reorder files, and merge everything securely in your browser.

Merge PDF Rotate PDF Reorder PDFs PDF Joiner

Drag & Drop PDFs here

or click to select multiple files

100% Browser-Based

Files are merged locally in your browser. They are not uploaded to a server.

Rotate Before Merging

Rotate entire PDF documents clockwise or counter-clockwise.

Easy Reordering

Drag and drop thumbnails to arrange PDFs in any order.

Batch Operations

Rotate all PDFs or reverse the whole order with one click.

What is a Merge PDF tool?

A Merge PDF tool combines several PDF documents into a single file. Instead of emailing, printing, or archiving multiple separate PDFs, you can produce one clean document that keeps every page in the exact order you choose. It is useful when you need to submit a single file — for example, a report with attachments, a scanned contract with supporting documents, or a set of receipts bundled together.

This tool runs entirely in your browser using JavaScript. Your PDF files stay on your device and are never uploaded to a server, so you can merge documents that contain private or sensitive information without worrying about third-party access.

How to merge PDF files online

  1. Add your PDF files

    Click Select PDF Files or drag and drop two or more PDFs into the drop zone. Thumbnails and page counts appear automatically.

  2. Arrange and rotate

    Drag thumbnails to reorder. Use the rotation buttons on each file, or the batch buttons, to rotate entire documents before merging.

  3. Merge and download

    Click Merge PDF Files. The combined document is generated in your browser and downloaded automatically.

Why use this Merge PDF tool?

  • Runs fully in your browser — files are not uploaded to any server.
  • Supports drag-and-drop reordering so you decide the final page order.
  • Rotate individual files or all of them at once before merging.
  • Works on desktop, tablet, and mobile without installing software.
  • Handles large batches by merging in chunks to avoid memory errors.
  • Preserves the original fonts, images, and formatting of every PDF.

If you need to remove pages first, you can use our Remove Pages from PDF tool, or split a document with Split PDF before merging. To reduce the final size, try Compress PDF after merging.

Merge PDFs on mobile

The tool is responsive and works in modern mobile browsers on Android and iPhone. Tap Select PDF Files to pick documents from your device storage or cloud files app. Drag-and-drop reordering is replaced by the up/down arrow buttons that appear on each thumbnail, so you can still control the exact order. Rotation and batch buttons work the same way on a phone as on a desktop.

Who is this tool for?

Students & Academics

Combine lecture notes, research papers, and assignments into one organised study file.

Office Professionals

Merge reports, presentations, invoices, and project documentation into a single PDF.

Legal Professionals

Combine contracts and case files without sending confidential documents to a server.

HR & Administration

Organise employee records, applications, and policy documents into combined PDFs.

Frequently Asked Questions

Yes. You can rotate entire PDF documents clockwise or counter-clockwise before merging them, using the rotation buttons on each file thumbnail.

Drag and drop the PDF thumbnails to rearrange them. A Reverse Order button is also available for quick rearrangement.

Yes. All PDF processing happens locally in your browser using JavaScript. Your files are not uploaded to any server.

The tool handles most PDF sizes efficiently. For very large batches (40+ files) it merges in smaller chunks to avoid browser memory issues.

Yes. The merger copies pages directly from your source PDFs, preserving original fonts, images, vector content, and layout.