PDF Merger & Splitter
The PDF Merger combines multiple PDF documents into a single file directly in your browser. Reorder files, select custom page ranges, and merge without uploading anything to a server. 100% private, free, and with zero file size limits.
Drop PDF files here, or browse
Files stay 100% on your device. Rearrange order or choose specific page ranges below.
Most online PDF mergers require uploading sensitive documents, contracts, and financial records to third-party cloud servers. This tool processes your files 100% client-side using WebAssembly and pdf-lib — your files never leave your computer.
How to use the PDF Merger & Splitter
- Drop or select two or more PDF files.
- Use the ▲ and ▼ buttons to arrange files in the desired order.
- Optionally specify page ranges (e.g. '1-3, 5') to extract specific pages.
- Click 'Merge PDFs & Download' to generate your combined document instantly.
Common use cases
- Combine signed contract pages, receipts, and exhibits into a single document.
- Merge tax forms, statements, and financial reports without cloud upload risks.
- Extract specific pages from large PDFs and assemble them in custom order.
- Assemble presentation decks and report chapters without software installations.
Tips
- Because processing happens in your browser RAM, there are no file size limits or daily task caps.
- You can use page ranges like '1-5, 8' to skip unneeded cover pages or blank sheets before merging.
Frequently asked questions
Are my PDF files uploaded to your server? +
No. All PDF merging, slicing, and assembly happen 100% locally in your browser memory via pdf-lib. Zero bytes leave your device.
Is there a limit on file size or number of PDFs? +
No arbitrary limits. You can merge as many files as your device's memory can handle, completely free and with no watermarks.
Can I extract specific pages before merging? +
Yes. In the 'Pages' field for each file, you can specify custom page numbers or ranges (e.g. '1-3, 5') to include only what you need.