What is the PDF Merger?

This tool combines multiple PDF files into a single PDF document, entirely in your browser using pdf-lib. Upload as many PDFs as you need, drag to set the order, and download the merged result in seconds. No files are uploaded to any server at any point.

When would you use it?

Combining reports

Merge monthly reports, invoices or statements into a single document for easier sharing or archiving.

Assembling a portfolio

Combine separate PDF pages of work samples, certificates or CVs into one clean document to send to employers or clients.

Joining scanned documents

If you have scanned a multi-page document one page at a time, merge the individual PDFs back into a single file.

Collating meeting materials

Pull together agendas, presentations and notes from separate PDFs into one document before a meeting.

Frequently asked questions

There is no hard limit — you can merge as many files as you like. The only constraint is your device's available memory, which on modern computers comfortably handles dozens of PDFs.

No. The merger copies pages directly from each source PDF without re-rendering or compressing them, so quality is fully preserved.

Yes — drag the file rows up or down to set the order you want before clicking Merge.

Yes. All merging happens locally in your browser using pdf-lib. Your files are never uploaded to any server.

Password-protected PDFs cannot be merged without the password being removed first. You would need to unlock the PDF before using this tool.

Drag to reorder

Drag the file rows to set the order pages appear in the merged PDF.

100% private

Your PDFs never leave your device. All merging happens locally using pdf-lib.

No limits

Merge as many PDFs as you like. File size is only limited by your device's memory.

PDF Merger

Drop PDF files here