Merge PDF files
Combine multiple PDF files into a single document. Everything happens in your browser — your files aren't uploaded to a server.
How to merge PDFs
- 1
Add your PDFs
Drop the files into the upload area or select them from your device. Files appear in the order you add them.
- 2
Merge
Click Merge PDFs. The pages are combined in the order shown.
- 3
Download
Your combined PDF downloads automatically. The original files are left untouched.
Merge PDF FAQ
How many PDFs can I merge at once?
You can merge as many as your browser can process. Very large numbers of files or very large files may take longer and use more memory. If your device feels slow, try merging in smaller batches.
Are my files uploaded anywhere?
No. The merge happens entirely in your browser. The files are read locally and the merged PDF is created on your device.
Does merging reduce quality?
No. Omni PDF copies pages directly from each source document without re-rendering them, so text, vectors and images stay intact.
Can I reorder the files before merging?
Yes. Remove files and re-add them in the order you want. A drag-to-reorder interface is available in the full editor at /editor/.