OCR powered screen-capture tool to capture information instead of images. For Linux, macOS and Windows.
Links: Source Code | Documentation | FAQs | Releases | Changelog
Choose one of the options for a prebuilt release. If you encounter an issue please take a look at the FAQs or report it.
It's recommended to install NormCap from Flathub:
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
flatpak install flathub com.github.dynobo.normcap
Alternative options:
normcap @ AUR (Arch/Manjaro)Note: You must allow the unsigned application on first start: "System Preferences" → "Security & Privacy" → "General" → "Open anyway". You also need to allow NormCap to take screenshots. (#135)
As an alternative to the prebuilt packages above, you can install the NormCap Python package for Python >=3.9, but it requires more setup:
# Install dependencies (Ubuntu/Debian)
sudo apt install build-essential tesseract-ocr tesseract-ocr-eng libtesseract-dev libleptonica-dev wl-clipboard
## Install dependencies (Arch)
sudo pacman -S tesseract tesseract-data-eng wl-clipboard
## Install dependencies (Fedora)
sudo dnf install tesseract wl-clipboard
## Install dependencies (openSUSE)
sudo zypper install python3-devel tesseract-ocr tesseract-ocr-devel wl-clipboard
# Install normcap
pip install normcap
# Run
./normcap
# Install dependencies
brew install tesseract tesseract-lang
# Install normcap
pip install normcap
# Run
./normcap
1. Install Tesseract 5 by using the
installer provided by UB Mannheim.
2. Identify the path to the Tesseract base folder. It should contain a /tessdata subfolder
and the tesseract.exe binary. Depending on whether you installed Tesseract system-wide or
in userspace, the base folder should be:
C:\Program Files\Tesseract-OCR
or
C:\Users\<USERNAME>\AppData\Local\Programs\Tesseract-OCR
3. Adjust environment variables:
Create an environment variable TESSDATA_PREFIX and set it to your Tesseract base
folder, e.g.: "System Properties" → Tab "Advanced" → "Environment Variables …" →
"New …" → Variable: TESSDATA_PREFIX, Value: "C:\Program Files\Tesseract-OCR"
Append Tesseract's base folder to the environment variable PATH, e.g.: "System
Properties" → Tab "Advanced" → "Environment Variables …" → Section "User variables"
→ Select PATH → "Edit …" → Add a new entry "C:\Program Files\Tesseract-OCR"
To test your setup, open a new cmd-terminal and run:
tesseract --list-langs
4. Install and run NormCap:
# Install normcap
pip install normcap
# Run
normcap
Prerequisites for setting up a development environment: Python >=3.9, uv, and Tesseract >=5.0 (including language data).
# Clone repository
git clone https://github.com/dynobo/normcap.git
# Change into project directory
cd normcap
# Create virtual env and install dependencies
uv sync
# Register pre-commit hook
uv run pre-commit install
# Run NormCap in virtual env
uv run python -m normcap
Please use Weblate to complement or correct text for existing languages as well as for adding new languages.
(If you prefer not to use Weblate, you can also do it manually, but be aware that this is more cumbersome.)
This project uses the following non-standard libraries:
And it depends on external software:
Packaging is done with:
Thanks to the maintainers of those nice tools!
If NormCap doesn't fit your needs, try these alternatives (no particular order):
See XKCD:
Made with contrib.rocks
FAQs
OCR-powered screen-capture tool to capture information instead of images.
We found that normcap demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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