PPTX Consistency Checker

This project provides a command-line tool to analyze PowerPoint presentations (.pptx files) for inconsistencies in content. It combines text extraction, OCR, and AI-powered analysis using Google’s Gemini API to detect numerical, textual, timeline, and logical inconsistencies across slides.

Features

• Extracts structured text from PowerPoint slides including slide titles, content, and notes.
• Converts slides to PDF and then to images to perform OCR text extraction.
• Uses Tesseract OCR to read any textual content embedded as images.
• Integrates with Google Gemini API to analyze combined text for:
  • Numerical inconsistencies (conflicting stats, revenue numbers, percentages)
  • Textual contradictions
  • Timeline mismatches (dates, schedules)
  • Logical flaws or contradictory conclusions
• Outputs a JSON file listing detected inconsistencies with slide references and confidence scores.
• Supports debugging with detailed logs for troubleshooting.

How It Works

1. Text Extraction: Extracts text directly from slide elements and notes using python-pptx.
2. Image Conversion: Converts the presentation to PDF using LibreOffice, then to images using Poppler.
3. OCR: Applies Tesseract OCR on slide images to capture any text embedded as images.
4. Content Aggregation: Combines extracted structured text and OCR text for each slide.
5. AI Analysis: Sends aggregated slide content to Google Gemini API for inconsistency detection.
6. Output: Saves the AI response as a JSON file and logs key findings.

Limitations

• Requires LibreOffice installed and accessible via command line for PPTX to PDF conversion.
• Poppler utilities must be installed for PDF to image conversion.
• Tesseract OCR must be installed and configured in the system environment.
• Google Gemini API key is mandatory and usage might incur costs or require quota.
• Accuracy depends on the quality of slide content and OCR results.
• Large presentations might slow down due to PDF/image conversions and API calls.

Usage

Prerequisites

• Python 3.7+
• LibreOffice installed and added to system PATH
• Poppler utilities installed (and provide path with --poppler if needed)
• Tesseract OCR installed and configured (TESSDATA_PREFIX environment variable if on Windows)
• Google Gemini API key (set as environment variable GOOGLE_API_KEY or pass with --api-key)

Clone the Repository

git clone https://github.com/crackedhandle/pptx-consistency-checker.git
cd pptx-consistency-checker