Remove Blank Pages

😫 The Pain Point

Duplex (2-sided) scanners often scan the back of single-sided documents, resulting in “Content - Blank - Content - Blank”. You have to manually delete the blanks from the PDF.

🚀 Agentic Solution

Visual Inspector: Checks the “Ink Density” of each page. No ink = Blank.

Key Features:

• Sensitivity: Adjustable threshold (because scanned paper is never 100% #FFFFFF white).

⚔️ Phase 1: Commander (Quick Fix)

For a quick cleanup.

Prompt:

“Iterate through pages of scan.pdf. Convert each page to grayscale image. Calculate the percentage of black pixels. If it’s less than 0.5%, remove the page. Save as clean.pdf.”

Result: A clean PDF.

🏗️ Phase 2: Architect (Permanent Tool)

For Office Admins.

Engineering Prompt:

**Role:** Python PDF Developer
**Task:** Create a "Blank Page Remover".
**Requirements:**
1.  **GUI:**
    *   Select PDF.
    *   Slider: "Sensitivity" (Noise Box).
    *   "Clean" button.
2.  **Logic:**
    *   Convert page to image.
    *   Count non-white pixels.
    *   Compare vs Threshold.
    *   Build new PDF with only valid pages.
3.  **Deliverables:** `remove_blank.py`, `run.bat` (Windows), `run.sh` (Mac).

🧠 Prompt Decoding

• Threshold: Real-world paper has dust and grain. A strict “is completely white?” check will fail. The logic checks “is mostly white?”, which is robust.

🛠️ Instructions

1. Copy Prompt -> Paste -> Run.
2. Select PDF -> Clean.