Combine PDFs Online

Combining multiple PDF files into one is a task that comes up constantly — assembling a report from separate chapters, collecting signed contract pages, or bundling invoices for accounting. Most online tools require you to upload your documents to a server, which creates privacy and security concerns.

This tool merges PDFs entirely in your browser using pdf-lib. Your files are never transmitted anywhere — the merging happens locally on your device. Drop two or more PDF files, arrange them in the order you want, click Merge, and download the combined result.

The output PDF preserves all original content including text, images, annotations, and bookmarks from each source file. There is no page limit, and the tool handles multi-page documents correctly.

Merging PDFs locally is especially important when your documents contain sensitive information such as financial records, medical reports, or legal contracts.