Merge PDF Files — Free & Private
Combine multiple PDFs into one file instantly. Runs 100% in your browser — files never leave your device. Drag & drop reorder. Free, unlimited.
Drop PDFs to merge
PDF files only
🔒100% Private — Your files never leave your device. All processing runs locally in your browser.
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
Frequently Asked Questions
Yes. No credits, no limits, no account required. All processing happens in your browser.