Merge PDF files
Combine multiple PDFs into one unified document.
Select PDF files
or drop PDFs here
Merging PDFs...
This won't take long.
PDFs Merged!
How to Merge PDF Files
Combining multiple PDF documents into a single file is easy, fast, and secure with LocalOnlyPDF. Follow these simple steps:
- Select your files: Click the "Select PDFs" button or drag and drop your files into the upload area. You can select multiple files at once.
- Arrangement: The files will be processed in the order you selected them.
- Merge instantly: Our intelligent browser-based engine merges them immediately. There is no upload time because the files never leave your computer.
- Download: Click "Download Merged PDF" to save your new unified document.
Why Duplicate or Combine PDFs Locally?
Most online tools require you to upload your sensitive contracts, reports, or personal documents to a remote server. This creates a privacy risk. LocalOnlyPDF solves this by running the merging code directly in your browser via WebAssembly.
- No file size limits (depends only on your device RAM).
- 100% Private - data never travels over the internet.
- Works offline - you can even turn off your WiFi while using it.
Frequently Asked Questions
Is my data safe?
Yes. Your files are processed entirely on your device. They are never uploaded to any server, ensuring 100% privacy.
How many files can I merge?
You can merge as many PDF files as you need in one go.
Is there a file size limit?
Since we process files directly in your browser, the limit depends on your device's memory (RAM). Generally, files up to 100MB work smoothly, but larger files may work on powerful computers.