Advanced PDF Merger

Combine multiple PDF files into one with drag-and-drop, page reordering, rename output, and secure processing. Free and easy to use.

or drag and drop PDF files here (max 50MB each, up to 20 files)

Output Filename

.pdf

Key Features of Our Merge PDF Tool

Our online PDF merger is designed to meet diverse user needs with a robust set of features. Here’s what sets it apart:

  1. Drag-and-Drop Interface: Easily upload PDFs by dragging files into the drop zone.
  2. Page Reordering: Drag PDF thumbnails to rearrange the order of files in the merged document.
  3. Batch Processing: Merge up to 20 PDFs at once, with progress tracking.
  4. Output Renaming: Specify a custom filename for the merged PDF before downloading.
  5. PDF Previews: View thumbnails of uploaded PDFs to confirm selections.
  6. Remove Files: Delete unwanted PDFs from the merge list with a single click.
  7. Client-Side Processing: All merging occurs in your browser, ensuring data privacy.
  8. Conversion History: Re-download recent merges from local storage.
  9. Interactive Tutorial: Onboarding modal guides new users through the process.
  10. Enhanced Reliability: Skips invalid PDFs and provides detailed error messages for troubleshooting.
  11. Accessibility: ARIA labels and keyboard navigation ensure inclusivity.

How to Merge PDF Files Online

Using our merge PDF online tool is intuitive and straightforward. Follow these steps to combine PDF files:

  1. Upload PDFs: Click “Select PDF Files” or drag and drop up to 20 PDFs (max 50MB each).
  2. Reorder Files: Drag PDF thumbnails to arrange them in your desired order.
  3. Remove Unwanted Files: Click the remove button on any PDF thumbnail to exclude it.
  4. Rename Output: Enter a custom filename in the output field (e.g., “project_report.pdf”).
  5. Merge: Click “Merge” to combine the files, with a progress bar showing status.
  6. Download: Save the merged PDF to your device.
  7. Review History: Access recent merges for quick re-downloads.

Use Cases for Merging PDFs

A PDF combiner is versatile, supporting a wide range of applications across industries:

Why Our PDF Merger Stands Out in 2025

With numerous merge PDF tools available, our free PDF merger excels due to its advanced functionality and user-centric design: