Initializing PDF Merge securely in browser…
Zero server uploads. Your data stays private on your device.
How to Use PDF Merge
- Select PDF Files: Click the upload area or drag and drop two or more PDF files.
- Arrange Order: Use the move buttons to set the order of the files.
- Merge & Download: Click ‘Merge PDFs’ and instantly save your combined document.
Key Features
- Combine two or more PDFs into one document
- Move files up or down before merging
- Instant client-side processing without uploading files
- Maintains original document formatting and vector quality
- Free to use; 50 MB per file, subject to available browser memory
About PDF Merge
Merge multiple PDF documents into a cohesive single file with custom page ordering. All processing is executed client-side using JavaScript, ensuring your files never leave your device.
Frequently Asked Questions
Are my uploaded PDF files kept private?
Yes, 100%. Processing happens locally in your browser memory via WebAssembly/JS. No files are uploaded to any server.
Is there a limit on how many files I can merge?
Each file must be 50 MB or smaller. The number of files you can merge depends on available browser memory; use smaller batches on mobile.
Will merging reduce document quality?
No. The pages are merged at their native resolution without rasterization or compression loss.
Troubleshooting & Tips
- If processing fails, try two small, unencrypted PDFs first. Reduce the batch size on a phone.
- If the page order is wrong, move the files before merging again. The original files remain unchanged.