Merge PDF Files Online Free
Combine multiple PDF files into one - no upload, no account required. Great for merging certificates, mark sheets, and documents for job applications.
Drop PDF files here, or tap to select
Select multiple PDFs to merge
How to use
- 1
Upload your PDFs
Drop or select multiple PDF files. You can add more after the initial upload.
- 2
Set the order
Files are merged in the order shown. Remove and re-add files to change the order.
- 3
Click Merge
All PDFs are combined into one document.
- 4
Download the merged PDF
Save the combined PDF to your device.
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Frequently asked questions
- How many PDFs can I merge at once?
- There is no hard limit, but very large files (10+ PDFs each over 10 MB) may be slow on low-end phones. Process sequentially for best results.
- Are encrypted PDFs supported?
- Encrypted PDFs will show an error. Remove password protection from your PDF first, then merge.
- Is my PDF uploaded to a server?
- No. Merging is done entirely in your browser using pdf-lib. Nothing is ever uploaded.
- Will the merged PDF maintain the original quality?
- Yes. The merge operation copies pages as-is without re-encoding, so quality is preserved.