🔒 All files are processed securely in your browser. No uploads required for most tools.

Merge PDF

Merge multiple PDF files instantly — private, fast, and 100% browser-based. No upload required, fully secure and free.

Click or Drag & Drop PDFsFiles stay on your device

Use ↑ ↓ arrows to reorder your PDFs before merging.

Frequently Asked Questions

Have questions? We have answers. Find quick help about using this tool below.

How do I merge PDF files online?

Upload your PDF files by dropping them onto the workspace, arrange their order by dragging them around, and click 'Merge PDF'. Your combined document will download immediately.

Are my files uploaded when combining PDFs?

No, absolutely not. All merging operations are performed locally in your browser memory. Your files are never sent to any server, guaranteeing maximum privacy.

Is there a limit on how many PDFs I can merge?

AeroTools has no arbitrary limits on file quantities. You can merge as many PDF files as your local browser memory allows, completely free of charge.