Merge PDF

Combine multiple PDF files into a single document. Drag to reorder, then merge. All processing happens in your browser — your files never leave your device.

PDF merging combines two or more PDF files into a single document by appending pages sequentially or inserting them at specific points. PDF Forge uses pdf-lib (MIT license) directly in your browser — pages are copied at the object level, preserving original quality, bookmarks, and metadata with zero re-encoding. No file is uploaded to any server.

Drop your PDFs here

or click to browse — select multiple files

How it works

  1. Upload PDFs: Select two or more PDF files to merge.
  2. Reorder: Drag files up or down to set the merge order.
  3. Download: Get a single merged PDF instantly.

Why PDF Forge?

  • Privacy First: Files never leave your device. All merging happens locally via pdf-lib — no uploads, no servers, no exposure.
  • Lossless: Pages are copied at the object level — no re-encoding, no quality loss, no compression artifacts. Original bookmarks and metadata are preserved.
  • Unlimited: No file size or page count limits on browser-side merging. Merge as many files as you need.