Split PDF file
Extract one or more page ranges from your document, or save every individual page as a separate PDF.
Select PDF file
or drag and drop PDF here
A Guide to PDF Partitioning: How to Extract Pages and Split Files
Splitting a PDF involves isolating specific pages from the parent document's object tree and exporting them as a new standalone PDF binary. This process is useful for separating multi-page reports or extracting specific clauses from a contract.
Understanding the Page Object Isolation Process
Every page in a PDF is represented as a dictionary object containing references to its content streams, font sets, and graphic parameters. When you split a PDF or extract pages, our engine creates a new document Catalog and copies only the specific Page objects you request. It re-maps the resource references to ensure the newly generated PDF contains only the assets required for those pages, preventing unnecessary file bloat.
Local Client-Side Splitting Explained
Unlike cloud-based converters, splitting on DocumentAlter is performed entirely on your machine. This eliminates network latency, lets you process pages offline, and guarantees that sensitive documents remain secure within your browser window.
How to Split PDF (Step-by-Step Guide)
Select the PDF Source
Select or drag the PDF document you need to split. The parser reads the document structure locally.
Define Splitting Parameters
Specify individual page numbers or page ranges (e.g. 1-3, 5) to isolate, or choose to split all pages.
Execute Page Extraction
Click 'Split PDF' to run the extraction process and download the split pages immediately.
Frequently Asked Questions
Load the file, specify the page range or select 'extract all pages', and click 'Split PDF' to partition the files in browser memory.
Yes. You can input customized ranges like '1-3, 5-7, 9' to retrieve only the exact pages you need.
Yes. The tool is 100% free and runs locally inside your browser, meaning your document data remains safe and never uploads to any server.