PDF Merger & Splitter
How to Use This Tool
To merge PDFs, drag and drop your files into the upload area or click to browse. You can add as many PDF files as needed. Once uploaded, your files appear as cards that you can drag to reorder. When the order looks right, click "Merge PDFs" and your combined file downloads automatically.
To split a PDF, upload a single file. The tool displays a thumbnail preview of each page. Select the pages you want to extract by clicking on them, or enter a page range like "1-3, 5, 8-12." Click "Split PDF" to download your selection as a new file.
You can also use the "Split All" option to break a PDF into individual single-page files, which downloads as a ZIP archive. Each page becomes its own named file.
All processing happens entirely in your browser using JavaScript. Your PDF files are never uploaded to any server — they stay on your device throughout the entire process. Close the tab and everything is gone.
What is PDF?
PDF (Portable Document Format) is a file format developed by Adobe in 1993 to present documents consistently across different devices, operating systems, and software. A PDF file captures all the elements of a printed document — text, images, fonts, layouts — as a fixed-format electronic file.
The key advantage of PDF is that documents look identical regardless of where they're opened. A PDF created on a Mac looks the same on Windows, Linux, or a mobile phone. This consistency made PDF the standard format for contracts, reports, invoices, academic papers, and official documents worldwide.
PDFs can contain text, images, vector graphics, hyperlinks, form fields, digital signatures, and even embedded multimedia. The format supports encryption and password protection, making it suitable for sensitive documents. PDF files can be compressed to reduce file size while maintaining visual quality.
Since 2008, PDF has been an open standard (ISO 32000), meaning anyone can create software that reads or writes PDF files without licensing fees. This openness led to wide adoption and the development of many free PDF tools and libraries.
Common tasks people perform with PDFs include merging multiple documents into one (like combining scanned pages), splitting large files into smaller sections, extracting specific pages, compressing file size, and converting to or from other formats.