Merge PDF
Combine PDFs in any order. On the ground, not in the cloud: processing runs locally with WebAssembly.
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How to use Merge PDF free
- Open Merge PDF.
- Drop two or more PDFs.
- Click Merge PDFs.
- Download — nothing was uploaded.
Why GroundPDF?
- No upload — documents stay on your computer.
- No account, no daily limits.
- Ground vs cloud — your file doesn’t earn frequent-flyer miles.
- Offline after first load.
Merge PDF FAQs
How do I merge PDF files?
Open Merge PDF, drop two or more PDFs, optionally reorder them, then click Merge PDFs and download the combined file.
Is there a file size or page limit?
Limits come from your browser and device memory, not from a server quota. Large merges work best on desktop.
Can I merge password-protected PDFs?
Unlock protected PDFs first with Unlock PDF (you need the password), then merge them here.
Do you upload my files?
No. GroundPDF processes files entirely in your browser with WebAssembly. Files never leave your device — nothing is uploaded to a server.
Is it free?
Yes. Free to use with no account and no daily limits.
Which devices and browsers work?
Any modern browser with WebAssembly support: Chrome, Firefox, Safari, and Edge on desktop or mobile.
How is this different from iLovePDF or Smallpdf?
Those tools upload your files to the cloud. GroundPDF runs on your device (on the ground, not in the cloud), so your documents stay private by design.