Image OCR
100% client-side text recognition. Images are never uploaded. Supports pasting screenshots (Ctrl+V), drag & drop, and uploading.
Settings & Input
Recognition Result
0 charactersAbout Free Online Local Image OCR
Super Image OCR is a completely free, privacy-first online utility. Powered by the popular Tesseract.js neural network library, it enables real-time Optical Character Recognition right inside your browser sandbox.
Unlike conventional online OCR websites that upload your personal documents to their cloud storage, our tool operates 100% locally in your browser. This eliminates security vulnerabilities when converting confidential files, business invoices, receipts, or ID photos.
Key Features & Advantages
- Instant Clipboard Paste (Ctrl+V) — Take a screenshot using Snipping Tool, WeChat, QQ, or macOS screenshot, press Ctrl+V anywhere on the page, and OCR starts immediately.
- Multiple Language Models — Instantly load neural weights for English, Simplified Chinese, Traditional Chinese, Japanese, and Korean.
- Built-in Image Preprocessing — Enhance text recognition by running Contrast Booster, Grayscale Converter, or Binarization (converting image pixels to high-contrast black & white) beforehand.
- WebAssembly Sandbox — Pure client-side calculations run through Web Workers, keeping your workflow safe and offline-capable.
Tips & FAQ
A: When you run OCR in a specific language for the first time, Tesseract.js downloads the pretrained neural network model from a CDN. Once downloaded, the browser caches the file, making subsequent OCR runs almost instantaneous, even offline.
A: Enable "Enhance Contrast" or "Binarization" in the settings console. This cleans up noisy backgrounds and sharpens blurry characters to boost Tesseract's parsing accuracy.