antimatter15/ocrad.js

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

3517 stars · 379 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Ocrad.js is a pure-JavaScript port of the Ocrad OCR engine, compiled to JavaScript via Emscripten, that converts scanned images of text back into text entirely in the browser. It exposes a simple global OCRAD() function accepting canvas, Context2D, or ImageData inputs with no server or large training-data dependencies.

Use cases

• extract text from images in the browser
• add handwriting input to a tablet app offline
• build a browser extension to copy text from images
• run OCR client-side without a server
• recognize text in an offline note-taking app

When to choose

• you need lightweight (~1MB) client-side OCR with no server round-trip
• you want offline-capable text recognition in a web app or extension
• you need low-latency OCR on touchscreen devices

When to avoid

• you need high accuracy on real-world scanned documents - Tesseract is far more accurate
• you need modern maintained OCR - the project has seen little activity since 2020
• you need handwriting or multi-language recognition at production quality

Facets

library · maturity maintenance

ocr image-processing nlp computer-vision image-processing web-development frontend browser wasm cross-platform emscripten client-side-ocr text-recognition offline-capable gpl-3.0 javascript

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