Klaro [klɛro] is a simple consent manager that helps you to be transparent about the third-party applications on your website. It is designed to be extremely simple, intuitive and easy to use while allowing you to be compliant with all relevant regulations (notably GDPR and ePrivacy).
This GIF shows how Klaro deletes Cookies as the user disables apps. A full-length version of the video with subtitles and explanations is available on YouTube as well as in this repository.
- Free and Open Source: No hidden fees, subscriptions or restrictions.
- Easy to use: Simply add a small JS snippet and config to your site and you're ready to go!
- Flexible and customizable: Manage consent for all possible types of third-party apps and easily customize the tool according to your needs.
- Multilingual: Full internationalization support, with languages included out of the box. New translations can be added in just a few lines of code. Contributions welcome!
Current languages: Catalan, Croatian, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Norwegian, Romanian, Serbian (Latin and Cyrillic), Spanish, Swedish, Turkish - Small footprint: The minified+gzipped JS is only 37 kB and contains everything that is required, including style sheets and translations.
- Intuitive and responsive: Klaro is designed to blend in with your existing design and optimized for modern desktop and mobile browsers.
- Secure and reliable: Klaro ensures that no third-party apps or trackers are executed without the consent of the user, even when JavaScript is disabled or Klaro itself gets blocked.
To use the widget on your website, simply download klaro.js as well as the example config config.js. You can also download compiled JS files from the dist
folder of this repository. Do not use the klaro.js
file from the src
folder, it will not work in the browser as it's an ES6 module and needs to be transpiled first (for most browsers at least). Follow the instructions below to adapt the config to your needs and then include the two files in your website like this:
<script defer type="text/javascript" src="config.js"></script>
<script defer type="text/javascript" src="klaro.js"></script>
Do not forget to change your existing apps/trackers as outlined in the next section as well so that Klaro can manage them. Klaro will automatically open on page load.
We also provide a version of Klaro without stylesheets included (which is useful in case you want to provide your own stylesheet), klaro-no-css.js. If you use this, make sure to either include your own styles or to include klaro.min.css like this:
<link rel="stylesheet" href="klaro.min.css" />
We also provide a non-minified version of the stylesheet, which is great if you want to make edits: klaro.css.
If you wish to open the consent manager manually on user interaction (for example through a link in the privacy policy), you can use the klaro.show()
global. Example:
<a class="button is-success" onclick="return klaro.show();">Change consent settings</a>
To manage third-party scripts and ensure they only run if the user consents with their use, you simply replace the src
attribute with data-src
, change the type
attribute to text/plain
and add a data-type
attribute with the original type, and add a data-name
field that matches the name of the app as given in your config file. Example:
<script type="text/plain"
data-type="text/javascript"
data-name="optimizely"
data-src="https://cdn.optimizely.com/js/10196010078.js">
</script>
Klaro will then take care of executing the scripts if consent was given (you can chose to execute them before getting explicit consent as well).
The same method also works for images, stylesheets and other elements with a src
or type
attribute.
The consent manager is configured using a config dictionary, which you typically define in a separate JS file. To learn more, simply read the annotated example config, which contains descriptions of all valid config options and parameters.
Klaro is also available as a Node.js module via npm:
npm install klaro
The npm distribution includes fully-fledged Klaro with CSS as well as the version without CSS (the CSS bundle is also included). In addition, it contains the consent management framework without the UI classes, which is handy in case you want to use your own UI classes:
// import Klaro with CSS
import * as klaro from 'klaro'
// import Klaro without CSS
import * as klaro from 'klaro/dist/klaro-no-css'
// import the accompanying CSS (requires style-loader)
import 'klaro/dist/klaro.css'
// import only the consent manager (no UI)
import 'klaro/dist/consent-manager'
This enables you to seamlessly integrate Klaro with your own JS projects, regardless if you use React, Vue, Angular, Mithril, Svelte or any other JS framework. Have a look at our webpack example to see a complete example.
If you want to customize Klaro or extend it, you can build it from scratch using the following commands:
npm install
npm run-script make-dev #will run a development server
npm run-script make #will build the production version
If you have an environment where make
is available, you can also run
make build
To publish a new version of Klaro to NPM, simply run
make publish
To generate a new tagged release, simply run
make release [RT=patch|minor|major]
If no argument is given, a 'patch' release will be created. The release mechanism will not run if
the working directory isn't clean. If it is, a Python script will increase the version number in
the package.json
file, rebuild the dist
files, create a new commit and tag it with the version.
Want to contribute? We'd love that!
If you have a feature request or bug to report, please fill out a GitHub Issue to begin the conversation.
If you want to help out, but don't know where to begin, check out the open issues tagged "help wanted".
If you are multilingual, consider contributing a translation we don't have yet.
This project is licensed under a BSD-3 license. A list of third-party libraries can be found in the package.json file.
The accompanying website uses Bulma, Bootstrap and Prism and a surveillance camera image from Wikipedia.
Do you have problems using Klaro? If so, we want to know it! Just open an issue here and if possible provide the following information to us:
- The website on which Klaro is installed (if possible)
- The config file you're using (a link is sufficient)
- The version of Klaro that you're using (you can get this by opening the developer tools of your browser, going to the "Console" tab and typing
klaro.version()
in the JS console.)