Programming
Jul 4, 2026freeCodeCamp
Building a Browser-Based PDF Analyzer with JavaScript
This article guides developers through building a browser-based PDF analyzer using JavaScript, emphasizing client-side processing for privacy and speed. It covers the problem of manual PDF inspection, the benefits of automation, and a practical implementation using `PDF-lib`, `PDF.js`, `Tesseract.js`, and `Chart.js`. The tutorial details workflow from file upload and preview to configurable analysis and report export.
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