Merge PDF Online
Select multiple PDF files and combine them into a single document. Reorder files before merging. Everything runs in your browser — nothing is uploaded to any server.
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Drop PDF files here
or click to select files
How to Use
- 1
Upload your PDF files
Drag and drop two or more PDF files into the upload box, or click to browse.
- 2
Reorder if needed
Use the ↑ and ↓ buttons next to each file to change the merge order.
- 3
Merge and download
Click "Merge PDFs". All pages are combined into a single PDF ready to download.
Frequently Asked Questions
How do I combine two PDF files into one?↓
Upload both PDF files using the upload box, check the order (use the arrow buttons to rearrange if needed), then click "Merge PDFs". The result is a single PDF with the pages from both files in sequence.
Is there a page limit when merging PDFs?↓
There is no fixed page limit. Your browser's available memory is the practical limit. Most modern devices handle hundreds of pages comfortably. Very large PDFs (100+ MB each) may be slow to process.
Can I reorder the PDFs before merging?↓
Yes. After uploading, each file appears in a list with ↑ and ↓ buttons. Use these to change the order of the PDFs. The merged file will follow the order shown in the list.
Are my PDF files safe when merging?↓
Yes. Merging happens entirely inside your browser using pdf-lib, a JavaScript library. Your files are never sent to any server. You can use this tool offline once the page has loaded.
Can I merge password-protected PDFs?↓
Yes. If a file needs a password to open, the tool shows a password field right next to it in the file list — enter the password and it unlocks in your browser, ready to merge alongside your other files.