How to Split a PDF (2026)
You have a 200-page PDF and need only pages 40–60 as a separate file. Or you have a single combined document that should really be three documents. Or a scanner dumped an entire ream into one oversized file and you want each section as its own PDF. Splitting a PDF is one of those jobs that sounds trivial until you discover half the "free" tools either watermark the output, cap free use at five pages, or require an account. This guide covers the fast way to split PDFs, with no compromises.
- Split any PDF into multiple files by page range, every N pages, or custom selection — free, in your browser.
- Covers split vs. extract vs. reorder.
- Covers method 1: udt pdf splitter (free, browser-based).
- Covers method 2: acrobat and command-line tools.
- Covers common splitting cases.
Split vs. Extract vs. Reorder
These three operations are related but different, and picking the right one saves time. Splitting divides one PDF into multiple smaller PDFs. Extracting pulls specific pages out into one new PDF while leaving the original intact. Reordering rearranges pages within a single PDF without creating any new files.
Split when: you have one PDF that logically should be many (an annual report where each chapter should be its own file; a scanned batch where each document got combined into one PDF). Extract when: you need certain pages as a standalone file but don't need the rest separated out (PDF page extractor). Reorder when: pages are out of order and you need to rearrange, not separate (PDF reorderer).
Some tools blur the line by letting one operation produce any of these outputs. A capable splitter can also extract (split into two files: the pages you want and the rest, then discard the rest) and even approximate reordering (split into single-page files, reassemble in new order via merge). For clarity, match the tool to the task.
Method 1: UDT PDF Splitter (Free, Browser-Based)
The UDT PDF Splitter handles all the common split patterns in your browser: split by page range ("pages 1–20, 21–40, 41–60" into three files), split every N pages ("every 10 pages" produces a new file at each 10-page boundary), or split at custom breakpoints you define manually. Nothing uploads. Each output PDF is generated and downloaded locally.
-webkit-backdrop-filter alongside backdrop-filter for Safari support. Without the prefix, the effect is invisible to roughly 25% of mobile users.The workflow: drop the PDF in, choose a split pattern, preview the planned output (how many files, which page ranges), and download. The tool outputs a ZIP containing all resulting files, or downloads each individually if you prefer. Preserves the original PDF exactly — you can always re-split differently from the source.
Two features worth knowing. First, split patterns can be saved as presets if you split similar documents regularly (useful for splitting monthly scan batches the same way every time). Second, the tool can name outputs from content — if your PDF has clear chapter markers or form titles, naming can follow those rather than generic "split-1.pdf, split-2.pdf" filenames.
Method 2: Acrobat and Command-Line Tools
Acrobat Pro has splitting under Organize Pages → Split. Choose by number of pages, file size, or top-level bookmarks. The last option is particularly nice for documents with a proper bookmark structure (you can split each chapter automatically). The trade-offs are the usual Acrobat trade-offs: subscription cost, desktop install, and a UI that hides the feature a few menus deep.
backdrop-filter inside a position: fixed element can cause severe scroll performance issues. Test thoroughly on real iOS devices.Command-line tools shine for batch splitting. pdftk has `burst` (split every page into its own file) and `cat` with page ranges (split specific ranges). qpdf has `--split-pages=N` to split every N pages. These are the tools document-processing pipelines use for high-volume splitting at scale.
Preview on macOS and the built-in PDF viewer on Windows don't natively split, but you can achieve a split by opening the PDF, selecting the pages you want in the thumbnail sidebar, dragging them to the desktop (on macOS) or using Print → Save As PDF with a page range (Windows). Clunky but works for one-off splits.
Common Splitting Cases
Splitting a scanned batch. A sheet-fed scanner ran a stack of separate documents through in one pass, producing one combined PDF. Split at the known page counts of each document (document 1 was 4 pages, document 2 was 7 pages, etc.) or use a splitter that detects blank separator pages automatically.
Isolating a chapter. You need just Chapter 3 of a book or report as a standalone PDF. Use split by page range with a single range (e.g., pages 45–80) — the tool outputs just that range as a new file. Or use the page extractor if the split produces unnecessary remainder files.
Creating a collection. You want each appendix of a long document as its own file. Split by custom breakpoints at each appendix start page. Modern splitters handle this well with a visual timeline where you click breakpoints on the page thumbnail strip.
Breaking up an oversized file. Email attachment limits, upload limits, or storage constraints can push you to split a 300MB PDF into 10 smaller pieces. Split every N pages where N is calibrated to hit your size target. The first cut is often approximate; adjust N until the output files fit your constraint.