OCR - Text Recognition

Upload an image to extract text

Supports PNG, JPG, WebP

Powered by Tesseract.js - runs entirely in your browser

Extracted Text

Extracted text will appear here

100% Client-Side • Zero Data Sent to Servers

Online Optical Character Recognition (OCR) & Image to Text

Recognize and extract editable text from screenshots, scanned documents, code snippets, and photos using client-side WebAssembly OCR technology.

Local Processing & Data Privacy

All formatting, parsing, decoding, and validation executes entirely within your browser using modern Web APIs and JavaScript. Your tokens, JSON payloads, regex inputs, and queries never leave your computer.

About this Tool

Copying text trapped inside screenshots, slide decks, error dialogs, or paper invoices often involves tedious retyping. Modern Optical Character Recognition (OCR) enables instant character transcription directly into your clipboard.

DevRef's Online OCR Tool runs a client-side neural recognition engine (Tesseract.js WebAssembly) directly within your browser. It supports multi-language recognition (English, Simplified & Traditional Chinese, Japanese, Spanish, French, German), filters noise, and auto-aligns text blocks. Your uploaded documents and confidential screenshots never leave your browser—zero images are transmitted to external servers.

How to Use

  1. 1Upload or Paste Screenshot: Drag and drop an image file or paste directly from your clipboard (Cmd+V / Ctrl+V).
  2. 2Select Recognition Language: Choose the target language (English, Chinese, Japanese, etc.) to optimize character recognition accuracy.
  3. 3Run OCR Recognition: Click 'Recognize Text' to initiate the in-browser neural text detection pipeline.
  4. 4Copy or Download Text: Review the extracted text output, edit lines as needed, and copy to clipboard or download as a text file.

Key Features

  • •Client-side WebAssembly OCR execution with multi-threaded processing
  • •Support for 10+ languages including Latin, CJK (Chinese, Japanese, Korean), and Cyrillic scripts
  • •Direct clipboard paste support (Ctrl+V / Cmd+V) for rapid screenshot processing
  • •Confidence score reporting and text layout preservation
  • •100% private local execution: sensitive contracts, medical bills, and internal credentials remain secure

Frequently Asked Questions

Are my uploaded screenshots or scanned documents sent to DevRef?

No. The OCR model runs entirely client-side in your web browser using WebAssembly. Your images and extracted text never touch our servers.

How can I improve recognition accuracy on low-quality images?

Ensure the screenshot is reasonably sharp and high-resolution. Cropping out unrelated background elements or increasing image contrast improves character boundary detection.

Can I extract code snippets from videos or slides?

Yes. Simply take a screenshot of the code window, paste it into the tool, and copy the recognized source code directly into your editor.

Related Guides, Cheatsheets & Recipes

Online Image Compressor

Compress scanned documents and images before sharing.

Online Diff Checker

Compare recognized text against an original draft to verify accuracy.

Online Base64 Encoder

Encode screenshots into Base64 data URIs for embedding.