Privacy Guide

Split PDF Pages Locally — Zero File Upload Required

BigWow's PDF Splitter uses pdf-lib compiled to run in your browser's JavaScript engine. You select which pages to extract, and the split happens entirely in memory — outputting a new PDF that downloads directly to your device.

Splits PDFs with 1,000+ pages entirely in browser memory.
0 bytes of PDF data uploaded to any server.
Supports page range selection, single page extraction, and multi-range splits.

Frequently Asked Questions

Why not just use Smallpdf or iLovePDF to split PDFs?
Both upload your document to their servers. BigWow splits your PDF entirely in your browser — no upload, no server, no data exposure.
Does splitting a PDF affect image or font quality?
No. The local splitter extracts pages by reference from the PDF object tree without re-rendering or re-compressing content.

Sources & References

  1. ISO 32000-2:2020 PDF 2.0 specification for page tree structures.
  2. W3C File System Access API specification for sandboxed local file saving.

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