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Description

Basic usage: - Launch `normcap` - Select a region on the screen - Retrieve recognized text in clipboard

Programming language: Python
License: GNU General Public License v3.0 or later
Tags: OCR     Utilities     Multimedia     Graphics     Capture     Screen Capture    
Latest version: v0.3.3

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README

<!-- markdownlint-disable MD013 MD026 MD033 -->

NormCap

OCR powered screen-capture tool to capture information instead of images.

Build passing License: GPLv3 Code style: black Coverage Status

Links: Repo | PyPi | Releases | Changelog | FAQs

Content: Quickstart | Python package | Contribute | Credits | Similar tools

Screencast

Features

  • On-screen recognition of selected text
  • Multi platform support for Linux, Windows, MacOS
  • Multi monitor support, incl. HDPI displays
  • Parsing the text based on heuristics (optional, on by default)
  • Show notifications (optional)
  • Stay in system tray (optional)
  • Check for updates (optional, off by default)

Quickstart

❱❱ Download pre-build package for Linux, MacOS or Windows ❰❰

If you experience issues please look at the FAQs or open an issue.

(On MacOS, allow the unsigned application on first start: "System Preferences" → "Security & Privacy" → "General" → "Open anyway". You might also need to allow NormCap to take screenshots.)

For more info, take a look at the NormCap landing page

Python package

As an alternative to a pre-build package you can install the NormCap Python package:

On Linux

# Install dependencies (Ubuntu/Debian)
sudo apt install tesseract-ocr tesseract-ocr-eng

## Install dependencies (Arch)
sudo pacman -S tesseract tesseract-data-eng

## Install dependencies (Fedora)
sudo dnf install tesseract

# Install normcap
pip install normcap

# Run
./normcap

On MacOS

# Install dependencies
brew install tesseract tesseract-lang

# Install normcap
pip install normcap

# Run
./normcap

On Windows

1. Install Tesseract 5 by using the installer provided by UB Mannheim.

2. Adjust environment variables:

  • Create a environment variable TESSDATA_PREFIX and set it to Tesseract's data folder, e.g.:
  setx TESSDATA_PREFIX "C:\Program Files\Tesseract-OCR\tessdata"
  • Append Tesseract's location to the environment variable Path, e.g.:
  setx Path "%Path%;C:\Program Files\Tesseract-OCR"
  • Make sure to close and reopen your current terminal window to apply the new variables. Test it by running:
  tesseract --list-langs

3. Install and run NormCap:

# Install normcap
pip install normcap

# Run
normcap

Why "NormCap"?

See XKCD:

Comic

Contribute

Setup Environment

Prerequisites are Python >=3.9, Poetry, Tesseract (incl. language data).

# Clone repository
git clone https://github.com/dynobo/normcap.git

# Change into project directory
cd normcap

# Create virtual env and install dependencies
poetry install

# Register pre-commit hook
poetry run pre-commit install

# Run NormCap in virtual env
poetry run python -m normcap

Credits

This project uses the following non-standard libraries:

Packaging is done with:

  • briefcase - converting Python projects into standalone apps

And it depends on external software

Thanks to the maintainers of those nice libraries!

Similar open source tools

Certification

WOMM


*Note that all licence references and agreements mentioned in the normcap README section above are relevant to that project's source code only.