Can I merge PDF files online for free?

Yes, our PDF merger is completely free with no file limits. All merging happens in your browser using the pdf-lib library — your files are never uploaded to any server.

Is there a file size limit for merging PDFs?

Each individual PDF file can be up to 50 MB. There is no limit on the number of files you can merge, though very large combined documents may take longer to process.

Can I reorder pages before merging?

Yes, you can drag and drop to reorder the PDF files before merging. You can also remove individual files from the list. The final merged PDF will follow your specified order.

PDF Merger

Merge multiple PDF files into one document online for free. Drag and drop to reorder pages. No upload to server.

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Drop PDF files here or click to upload

Add Files

How to Use

Merge multiple PDF files into one document online for free. Drag and drop to reorder pages. No upload to server.

1Upload two or more PDF files using the file picker or drag-and-drop area.
2Reorder the files by dragging them into the desired sequence.
3Click Merge PDFs to combine all files into a single PDF.
4Download the merged PDF directly to your device.

Key Features

Merges multiple PDF files into a single document in the browser
Drag-and-drop interface with reordering before merging
No file size limits from a server — processing is fully client-side
Preserves original page content, formatting, and page order

Frequently Asked Questions

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How to Merge PDF Files Online for Free