What Is This Tool?
The PDF Merger combines several PDF files into one document in the order you choose.
What Can You Do With It?
Join scanned pages into one file. Combine a cover letter and resume. Merge invoices or reports for sending.
How Does It Work?
Using the pdf-lib library, all pages from each file are copied in order into a new PDF inside your browser.
Key Benefits
Keeps original page quality and text. Simple reordering.
Limitations and Important Notes
Password-protected PDFs cannot be merged. Some interactive form fields or bookmarks may not carry over. Very large files depend on device memory.
Privacy and Security
Files are processed inside your browser on your own device. They are not uploaded to Usekit servers, and the result is created locally for you to download.
Real-World Example
Choose cover.pdf (1 page) and report.pdf (5 pages). After merging, usekit-merged.pdf has 6 pages with the cover first.
Frequently Asked Questions
How many files can I merge?
At least two, with no fixed maximum other than your device memory.
Will text stay selectable?
Yes. Pages are copied, not converted to images.
Can I merge images too?
Use Image to PDF to convert images first.
Related Tools
How to use this tool
- Upload two or more PDFs.
- Arrange them with the arrows, then click Process file.
- Download the merged PDF.