Join PDF Documents — Free PDF Joiner
Join multiple PDF documents into one file. Drag and drop to reorder pages. 100% free and private — no files uploaded.
Joining PDFs means appending one document after another into a single file. This is ideal for combining chapters, report sections, or scanned pages into one organized document while preserving all formatting and bookmarks.
Drop PDFs to merge
PDF files only
How It Works
Drag and drop multiple PDF files, reorder them visually, and merge them into a single document — all processed locally in your browser using the pdf-lib library. Your PDFs never touch a server.
The tool reads each PDF's internal structure, preserves all pages, bookmarks, and formatting, then combines them into one continuous document. You can rearrange the order by dragging files before merging.
Features
- ✓Combine unlimited PDF files into one document
- ✓Drag-and-drop reordering before merging
- ✓Preserves original formatting, fonts, and embedded images
- ✓No file size limits — handles large documents with ease
- ✓Instant download of the merged PDF
- ✓Works entirely offline after page load