Merge PDF files online

Combine two or more PDFs into one file.

🔒 Files stay in your browser

Choose PDF files

Select two or more PDFs.

Select PDFs

Compatibility: this version uses QPDF in WebAssembly, a more robust PDF engine than the previous merger. Password-protected PDFs still require their password and cannot be merged automatically.

About this tool

Combine multiple PDF documents into a single file. Select your PDFs, arrange them in the order you want, then create one merged document.

Useful for combining forms, reports, invoices, scanned pages or separate document sections into one PDF.

Practical guide

What does Merge PDF do?

Combine PDF files into one document without having to install desktop software.

When is it useful?

Useful when several scans, statements, forms or reports need to be sent or stored as one file.

What should I know before downloading?

Your selected PDFs are processed in your browser. Keep a copy of the originals until you have checked the merged result.

Are my files uploaded?

This tool is designed to process the document in your browser. PDFOnline.co.uk does not intentionally receive or store the PDF you select for this tool.