Extract PDF text in your browser with LiteParse for the web

This article explores how to run LiteParse, an open-source PDF text extraction tool by LlamaIndex, entirely in a web browser. It explains LiteParse's spatial text parsing approach for handling multi-column layouts and OCR fallback for image-based PDFs. The author details building a browser version using PDF.js and Tesseract.js, with a live demo link. The process involved using Claude Code and Opus 4.7 to adapt the Node.js CLI tool for browser use, enabling visual citations with bounding boxes for RAG-style Q&A. This is a technical tutorial and demonstration relevant to IT/technology, specifically PDF parsing and web development.