How Windows 11 Snipping Tool OCR Works

The Windows 11 Snipping Tool includes a built-in Optical Character Recognition (OCR) feature called “Text Actions.” This tool allows users to automatically detect, select, copy, and redact text directly from screenshots and image files without requiring third-party software. The system processes images locally on your device to convert visual characters into editable digital text.

The Underlying Technology

The Snipping Tool uses the native Windows OCR engine, which is integrated directly into the operating system. When an image is loaded or captured, the software analyzes the pixel layout to identify text patterns, fonts, and structures. Because the processing occurs locally via Windows AI and machine learning models, your captures are processed quickly and without sending image data to external cloud servers.

How the Process Works Step-by-Step

  1. Image Capture: You capture a region, window, or full screen using the standard shortcut (Windows Key + Shift + S) or open an existing image file within the Snipping Tool application.
  2. Activating Text Actions: Clicking the Text Actions icon in the top toolbar triggers the OCR engine to scan the visual data.
  3. Character Recognition: The tool analyzes the image, identifies character boundaries, recognizes line breaks, and overlays an invisible selectable text layer precisely over the image pixels.
  4. Text Selection and Extraction: Once processing is complete, all recognized text becomes selectable. You can highlight specific words with your cursor to copy them or click the Copy all text button to place the entire content onto your clipboard.

Quick Redaction Capabilities

In addition to standard extraction, the OCR engine is programmed to identify sensitive data formats automatically. By using the Quick Redact function, the Snipping Tool can automatically detect and black out phone numbers and email addresses before you share the image. You can also manually select any text block and choose to redact it, permanently masking the sensitive information in the exported image.