How to use it
- Choose or drop your files, or enter the content to encode.
- Set the available output options and start processing.
- Preview, copy or download the result directly to your device.
PDF
Merge PDF
Combine several PDF files in the order you choose.
—✓ Your data stays on your device✓ Free · no sign-up✓ Runs locally
Method
The browser reads the selected file, performs the requested operation locally and creates a new downloadable result.
Worked example
Files A (2 pages) and B (3 pages) produce one 5-page PDF in the selected order.
Reference: developer.mozilla.org · Last reviewed: 2026-07-29
Supported formats
Private by design
Your data stays on your device. No account is required.
Frequently asked questions
Are my files uploaded — Merge PDF?
No. Processing runs locally in your browser and the input is not sent to our server.
Is this tool free — Merge PDF?
Yes. The core tool is free and does not require an account.
What happens if my file is too large — Merge PDF?
The tool stops before processing and shows the applicable safety limit. Split the batch or use a smaller file.