PDF Statement Splitter

A browser-based tool that splits a combined PDF statement into individual files — one per account code. No installation, no server, no data upload.

Created by Lim Huey Wen

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What it does

Accounts receivable teams often receive a single bulk PDF containing statements for every customer. This tool reads that file, detects each account automatically, and produces a separate downloadable PDF per account.

Example: A 12-page PDF with accounts 102001, 102002, 108004 becomes three individual files:

• 102001.pdf
• 102002.pdf
• 108004.pdf

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How to use

1. Open pdf-splitter.html in any modern browser — no setup required
2. Drop your combined PDF onto the upload area
3. Click Scan & Detect Accounts — the tool reads every page and finds account codes automatically
4. Review the detected account list to confirm it looks correct
5. Click Split into Separate PDFs
6. Download files individually by clicking each card, or click Download ZIP for everything at once

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Features

• Auto-detection — tries a comprehensive list of known label patterns (Account No :, Acc No:, Customer ID:, etc.) and falls back to a heuristic scan if none match
• Manual override — if auto-detection misses, use the Edit Pattern field to enter the exact label text and character format
• Multi-page accounts — pages belonging to the same account are automatically grouped into a single output file
• Fully local — all processing happens in the browser using PDF.js and pdf-lib; no data is sent to any server
• ZIP download — download all split files in one archive

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Compatibility

Works in all modern browsers (Chrome, Edge, Firefox, Safari). No installation or internet connection required after the page loads.

Dependency	Version	Purpose
PDF.js	3.11.174	Extract text from PDF pages
pdf-lib	1.17.1	Create and write output PDF files
JSZip	3.10.1	Package all files into a ZIP archive

All loaded via CDN — no build step needed.

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Pattern detection

The tool tries these label patterns in order, picking the one that matches the most pages:

Account No :    Account No:    Account No.    Account No
Acc No :        Acc No:        Account Number:
Customer No:    Customer ID:   Cust No:       Invoice No:

If none match, a heuristic scan looks for any LABEL : NUMBER pattern and picks the most frequent one.

Manual override: On the Review screen, click Edit pattern and enter:

• Label — the exact text before the code, e.g. Account No :
• Code characters — 0-9 for numbers only, A-Za-z0-9 for alphanumeric, A-Z0-9\- for codes with dashes

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File structure

pdf-splitter.html    # The entire application — single self-contained file
README.md

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License

MIT — free to use, modify, and distribute.

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PDF Statement Splitter — Lim Huey Wen — https://github.com/limhueywen