Combine PDF Files Into One — Free Online
Combine multiple PDF files into a single document. Drag and drop to reorder. Free, private, no signup required.
Have multiple PDF files that belong together? Drop them all here and the tool will combine them into a single, seamless document. Drag to reorder before merging — your files stay on your device the entire time.
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