Combine multiple PDF files into one. Drag to reorder. 100% client-side — files never leave your device.
Add multiple PDFs — drag handles to reorder before merging
How it works: Uses pdf-lib.js — a pure JavaScript PDF manipulation library. Your PDF files are loaded, their pages are extracted, and combined into a new PDF document — entirely in your browser. No server, no upload.
Tips: Drag the ≡ handle to reorder files before merging. You can specify individual page ranges per file using the range inputs.