Merge PDF Online
Combine multiple PDF files into one document. Free, fast, private — files never leave your browser.
Drop PDF files here or click to browse
About This Tool
Merge multiple PDF files into a single document. Reorder files by dragging. Everything runs locally in your browser using pdf-lib — your files are never uploaded to any server.
Frequently Asked Questions
Is there a file size limit?
There is no hard limit. However, very large PDFs (100MB+) may take longer to process depending on your device.
Are my files secure?
Yes. All merging happens in your browser. No files are uploaded to any server. When you close the tab, the data is gone.
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Before This Tool