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About the developer

534 Stars 168 Forks MIT License 959 Commits 49 Opened issues


Visualizing ontologies on the Web

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WebVOWL Build Status

This repository was ported from an internal SVN repository to Github after the release of WebVOWL 0.4.0. Due to cleanups with

git filter-branch
, the commit history might show some strange effects.

Run Using Docker

Make sure you are inside

directory and you have docker installed. Run the following command to build the docker image:

docker build . -t webvowl:v1

Run the following command to run WebVOWL at port 8080.

docker-compose up -d

Visit http://localhost:8080 to use WebVOWL.


Node.js for installing the development tools and dependencies.

Development setup


  1. Download and install Node.js from
  2. Open the terminal in the root directory
  3. Run
    npm install
    to install the dependencies and build the project
  4. Edit the code
  5. Run
    npm run-script release
    to (re-)build all necessary files into the deploy directory


Instead of the last step of the simple setup, install the npm package

globally with
npm install grunt-cli -g
. Now you can execute a few more advanced commands in the terminal:
  • grunt
    grunt release
    builds the release files into the deploy directory
  • grunt package
    builds the development version
  • grunt webserver
    starts a local live-updating webserver with the current development version
  • grunt test
    starts the test runner
  • grunt zip
    builds the project and puts it into a zip file

Additional information

To export the VOWL visualization to an SVG image, all css styles have to be included into the SVG code. This means that if you change the CSS code in the

file, you also have to update the code that inlines the styles - otherwise the exported SVG will not look the same as the displayed graph.

The tool which creates the code that inlines the styles can be found in the util directory. Please follow the instructions in its README file.

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