How to Merge PDFs
- Make sure Merge PDFs is selected at the top.
- Drag and drop your PDF files onto the upload area, or click it to browse your device.
- Your files appear in a list showing page counts and file sizes.
- Reorder files using the arrow buttons or by dragging them into the desired order.
- Remove any unwanted file with the × button.
- Click Merge & Download to combine all files into a single PDF.
How to Split a PDF
- Switch to the Split PDF tab at the top.
- Drop or browse to select the PDF you want to split.
- To extract specific pages, type page numbers or ranges into the input field (e.g. 1, 3, 5-8) and click Extract Pages. This creates a new PDF containing only those pages.
- To split every page into its own file, click Split All Pages (ZIP). You will receive a ZIP archive containing one PDF per page.
Tips
- You can add files in multiple batches — just keep dropping or browsing for more.
- Page ranges accept commas and dashes: 1-3, 7, 10-12 extracts pages 1, 2, 3, 7, 10, 11, and 12.
- Pages are extracted in the order you type them, so 5, 3, 1 gives you page 5 first, then 3, then 1.
- Very large PDFs may take a moment to process depending on your device.
Frequently Asked Questions
Are my PDF files uploaded to a server?
No. All PDF processing happens entirely in your browser using the pdf-lib library. Your files are never uploaded to any server, keeping your documents completely private.
How do I extract specific pages from a PDF?
Switch to the Split PDF tab, upload your file, then type the page numbers or ranges you want (e.g. 1, 3, 5-8) and click Extract Pages. Pages are extracted in the order you type them.
Can I merge more than two PDFs at once?
Yes. You can add as many PDF files as you need, either all at once or in multiple batches. Use the arrow buttons to set the order before merging.
What does Split All Pages do?
Split All Pages creates one individual PDF file per page and bundles them together in a ZIP archive for download.
Why is processing slow for large PDFs?
Large PDFs with many pages or high-resolution images take more time because all processing runs locally in your browser without server support. Processing time depends on your device's speed.
About
PDF Merge & Split lets you combine multiple PDF documents into one or break a single PDF into separate files — entirely inside your browser. Your files are never uploaded to a server; all processing happens locally on your device, keeping your documents private.
Built with pdf-lib for PDF manipulation and JSZip for creating ZIP archives when splitting all pages. Works on any modern browser, desktop or mobile, with no installs or sign-ups required.
From the build: the natural way to write the page-range parser is to expand "1-3" to [1,2,3] and dedupe. We did it the other way — we preserve duplicates and the order the user typed — because people use this tool to reorder pages, not just extract them. Typing "5, 3, 1" should produce a PDF with page 5 first. The whole pipeline streams through pdf-lib in-memory, and we let JSZip handle the archive when you split-all-pages so the browser never has to write thousands of separate downloads.