Build an AI PDF Book Summarizer: GPT-4 & Node.js Tutorial (Handle 50k+ Tokens & Long Docs)
Learn how to build a robust PDF Book Summarizer using the OpenAI API (GPT-4) and Node.js. This isn't just a basic tutorial—we solve the "Token Limit" problem by implementing a recursive chunking strategy, allowing you to summarize 75+ page documents (50,000+ tokens) with ease.
What You Will Build:
A React front-end for PDF uploads and custom word counts.
A Node.js backend to extract text from PDFs.
A recursive summarization algorithm to handle massive documents.
Dynamic UI updates with Bootstrap and custom CSS.
📍 Timestamps:
[00:03] - App Demo: Summarizing a 75-page PDF
[01:26] - The Logic: How to handle 50,000+ Token Documents
[01:41] - Chunking Strategy (Splitting text into 2,000 token segments)
[02:32] - Building the Front-end Interface (React)
[04:37] - Creating the PDF Upload Form & File Input
[08:15] - Implementing the Max Words Number Input
[10:25] - UI Styling: Adding a Background Hero Image
[13:00] - Form Validation: Disabling Button During Loading
[16:14] - Dynamic Button Text (Analyzing vs. Summarize)
[18:00] - Initializing State for Word Counts
Tech Stack: React, Node.js, Express, OpenAI API, Bootstrap.
#OpenAI #GPT4 #NodeJS #ReactJS #AIPDFSummarizer #FullStackDevelopment #AICoding