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Fahad BangashFahad BangashSenior Full Stack Engineer
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ChatPDF – AI Document Chat SaaS (OpenAI & Gemini) — project case study by Fahad Bangash
AI · SaaS

Project detail

ChatPDF – AI Document Chat SaaS (OpenAI & Gemini)

Demo Links

Live Demo

chatpdf.fahadbangash.com

User: admin@gmail.com

Pass: 12345678

Description

ChatPDF is an AI document workspace that turns static files into interactive conversations. Upload a document, ask questions in plain language, pull summaries, and extract insights—powered by OpenAI and Google Gemini—so teams stop hunting through pages and start talking to their content.

Built as a full SaaS product, it pairs a fast chat experience with subscriptions, free-trial control, payment gateways, CMS pages, and an admin dashboard designed for recurring revenue—not just a one-off chat widget.

Why ChatPDF?

  • Conversational Q&A over real documents—not keyword-only search
  • Dual AI providers: OpenAI and Google Gemini
  • Broad file support beyond PDFs alone
  • Chat memory and saved history for ongoing work
  • SaaS-ready plans, trials, and billing via PayPal & Stripe
  • Clean, responsive UI with SEO-friendly public pages

Interactive Document Chat

An engaging chatroom experience where users ask, clarify, and brainstorm against uploaded content—with context that carries forward across the session.

  • Ask questions and get answers grounded in the document
  • Instant summarization for long reports and research files
  • Smart chatbot that remembers earlier turns in the conversation
  • Chat history kept for revisit and continuity
  • Suggested prompts to speed up common tasks

Document Formats

One upload flow for the formats teams actually use day to day.

  • PDF, DOCX, TXT, CSV
  • XLSX, PPTX, JSON, EPUB
  • Fast ingest for reading, summarizing, and chat grounding

Payments & Subscriptions

  • PayPal and Stripe payment gateways
  • Secure gateway management for admin control
  • Create, update, and delete subscription plans
  • Free-trial management for conversion funnels
  • Easy self-serve subscription options for users

SaaS Dashboard & Ops

  • Admin insights tuned for SaaS metrics and oversight
  • Flexible plan management from the back office
  • CMS-style page management (Privacy, Terms, FAQ, and more)
  • SEO-minded structure to support organic discovery
  • Fast, responsive UI for everyday navigation

Server & Integrations

  • PHP 8.2 or higher
  • Apache mod_rewrite, CURL, PDO / PDO_MySQL
  • mbstring, JSON, and GD extensions
  • OpenAI API key for GPT-powered chat
  • RapidAPI key for extended AI/document services
  • Google Gemini support for alternate model routing

Talk to Your Files.

ChatPDF replaces static reading with a living dialogue over your documents—summaries, clarifications, and brainstorming in one place—while the SaaS layer handles plans, trials, and payments so you can ship it as a product, not just a prototype.

Built With

PHP 8.2+MySQLOpenAI APIGoogle GeminiPayPalStripeJavaScriptBootstrapSaaS Architecture