Split PDF Files

Split a PDF and Extract the Pages You Need

Splitting is the opposite of merging: instead of joining files, you take one PDF and pull pages out of it, either as a single trimmed document or as several smaller files. This tool reads one PDF at a time (up to 50MB), tells you how many pages it contains, and then gives you three precise ways to break it apart. Whether you need a single page out of a 200-page report, a clean half-sized copy of a brochure, or a long document chopped into evenly sized pieces, the work is done right here in your browser with the open-source pdf-lib library.

People reach for a splitter when a PDF carries more than they want to share or keep. A bank statement might contain twelve months when you only need one. A scanned packet might mix two unrelated documents. A printable workbook might have student pages and answer keys on alternating sheets. Rather than printing, re-scanning, or paying for desktop software, you can isolate exactly the pages you want and download them cleanly, with the original text and images left untouched.

The Three Ways to Split

Choose a method by clicking one of the three cards above. Each suits a different goal:

• Page Range extracts one continuous block of pages into a single new PDF. Set a From and To page — for example pages 5 through 9 — and you get one file containing just those five pages. This is the right choice when you want a specific section, like a single chapter, one invoice, or the appendix of a report.
• Every N Pages chops the whole document into consecutive parts of equal length. Enter a number such as 2, and a 10-page PDF becomes five separate 2-page files. Use this to break a large file into upload-friendly chunks, or to separate a stack of two-sided forms.
• Odd/Even Pages pulls out every odd-numbered page, every even-numbered page, or both into separate files. This is the classic fix for a duplex document scanned in two passes, where one stack holds the fronts and the other holds the backs.

How to Split a PDF Step by Step

1. Load your PDF. Drag the file onto the drop zone or click to browse. The tool reads it locally and shows the file name, size, and total page count, so you can confirm you have the right document.
2. Pick a split method. Click Page Range, Every N Pages, or Odd/Even Pages. The input fields below change to match your choice.
3. Enter your numbers. Type the From/To pages, the interval, or select odd, even, or both. A live summary tells you exactly how many files will be created — and warns you in orange if your range is invalid before you waste a click.
4. Click Split PDF. A progress bar shows the pages being extracted. Everything is processed in memory on your machine.
5. Download your result. If the split produced a single file, you get one PDF. If it produced several, the tool bundles them into a single ZIP archive (using the JSZip library) so you download everything in one click.

Real-World Uses for Splitting

• Sharing one section privately: send page 3 of an offer letter without revealing the salary table on page 4 — use Page Range to extract just what the recipient needs.
• Meeting upload limits: a portal that caps uploads at a few megabytes per file becomes easy to satisfy when Every N Pages turns one large PDF into smaller parts.
• Fixing duplex scans: after scanning fronts and backs separately, use Odd/Even to separate them so they can be reordered or recombined correctly.
• Pulling a single form: extract one invoice, one receipt, or one certificate from a long batch scan to file or forward on its own.
• Separating answer keys: teachers can split a worksheet so student pages and answer pages live in different files.

Tips and Best Practices

• Read the live summary. Before clicking Split, glance at the line under the inputs — "Will create 5 PDF files" confirms your settings are doing what you expect.
• Page numbers are the printed order, starting at 1. Page 1 is the first page in the document, regardless of any numbering printed on the page itself.
• Combine with merge for reordering. To reorder pages, split out the pieces you want and then recombine them in the desired order with the merge tool.
• Keep an eye on the file count for ZIPs. Splitting Every N on a long document can create many files; that is normal, and they all arrive in one ZIP.
• Work from the original, not a compressed copy, if you care about quality — splitting never reduces quality, but starting from the cleanest source keeps it that way.

Common Problems and Fixes

• "Invalid range" warning: your From or To value is outside 1 to the total page count, or From is greater than To. Adjust the numbers until the summary turns green.
• File rejected at 50MB: the document is too large for in-browser splitting. Compress it first, or extract a smaller range from a copy made elsewhere.
• The PDF will not load: it may be encrypted or corrupted. Remove any password in your PDF reader and save a fresh copy, then load that.
• Got a ZIP when you expected one PDF: that happens whenever a split creates more than one file. Unzip it to find every extracted document inside.
• Odd/Even gave fewer files than expected: a one-page document has no even pages, so an "even" or "both" split on it produces only what actually exists.

How Splitting Works in Your Browser

When you load a file, the browser reads it into memory and pdf-lib reports the page count. For each split, the tool creates a new empty PDF and copies only the chosen page objects into it, then saves that as downloadable bytes — the original pages are duplicated, not re-rendered, so text stays selectable and images keep full resolution. When more than one file results, JSZip packages them into a single archive in memory. None of this touches a server: there is no upload, no temporary storage, and nothing left behind once you close the tab.