What Is PDF OCR and How Does Optical Character Recognition Work?

Published: 2026-03-11 | Read Time: 4 min read

An accessible technical explanation of Optical Character Recognition (OCR), computer vision algorithms, and how image scans become searchable text.

Frequently Asked Questions

Can OCR work offline in the browser?

Yes! DODDY compiles the Tesseract OCR engine to WebAssembly (WASM), running full neural recognition locally on your device.