Combine multiple PDF files into a single document. Upload, reorder, and merge — all processing happens in your browser.
100% Client-SideNo UploadFree ForeverNo Sign-up
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Frequently Asked Questions
Our PDF merge tool reads each uploaded PDF file in your browser using the pdf-lib library. It creates a new PDF document and copies all pages from each file in the order you specify. The result is a single PDF containing all pages from your input files.
No. All PDF merging happens 100% in your browser. Your files never leave your device and are never sent to any server. This makes the tool safe for sensitive or confidential documents.
There is no hard limit since all processing happens in your browser. However, very large files or many files may be slower to process depending on your device's memory and processing power.
Yes! After uploading your PDF files, you can drag and drop them to reorder. The merged PDF will contain pages in the exact order you arrange the files.
The tool supports most standard PDF files (PDF 1.0 through 2.0). Password-protected or encrypted PDFs may not be supported. If a file fails to load, try removing its password protection first.