15.1. Customization

There are several different ways to customize the UI of eduMFA.

15.1.1. Templates

You can change the HTML templates of the web UI as follows. You can create a copy of the orignial templates, modify them and use rewrite rules of your webserver to call your new, modified templates.

This way updates will not affect your modifications.

All HTML views are contained in:


You can find them on GitHub or at the according location in your installation.

Follow these basic steps:

  1. Create a new location, where you will keep your modifications safe from updates. You should create a directory like /etc/edumfa/customization/ and put your modified views in there.

  2. Activate the rewrite rules in your web server. E.g. in the Apache configuration you can add entries like:

    RewriteEngine On
    RewriteRule "/static/components/login/views/login.html"  \

    and apply all required changes to the file mylogin.html.


    In this case you need to create a RewriteRule for each file, you want to modify. Alternatively the following configuration only rewrites the URL if the template file exists in the customization tree:

    RewriteEngine on
    RewriteCond /etc/edumfa/customization/%{REQUEST_URI} -f
    RewriteRule "^(.*)$" "/etc/edumfa/customization/%{REQUEST_URI}"
  3. Now activate mod_rewrite and reload apache2.


Of course - if there are functional enhancements or bug fixes in the original templates - your template will also not be affected by these. Translating templates

The translation in eduMFA is very flexible (see Setup translation). But if you change the templates the normal translation with PO files can get a bit tricky.

You can use the scope variable browserLanguage in your custom templates.

You can print the browser language like this {{ browserLanguage }}.

And you can display text in different languages in divs like this:

<div ng-show="browserLanguage === 'de'">
    Das ist ein deutscher Text.
<div ng-show="browserLanguage === 'en'">
    This is an English text.

15.1.2. Themes

You can adapt the style and colors by changing CSS. There are at least two ways to do this. Providing your own stylesheet in the config file

You can create your own CSS file to adapt the look and feel of the Web UI. The default CSS is the bootstrap CSS theme. Using EDUMFA_CSS in edumfa.cfg you can specify the URL of your own CSS file. The default CSS file url is /static/contrib/css/bootstrap-theme.css. The file in the file system is located at edumfa/static/contrib/css. You might add a directory edumfa/static/custom/css/ and add your CSS file there.

The CSS you specify here adds to the already existing styles. Thus a convenient way for using this setting is to help you distinguish different eduMFA instances like “testing”, “acceptances” and “production” or different nodes in a redundant setup.

You can create a simple CSS file [..]/edumfa/static/custom/css/testing.css like:

body {
    background-color: green;

and then set in the edumfa.cfg:

EDUMFA_CSS = "/static/custom/css/testing.css"

This way your testing instance will be immediately distinguishable due to the green background. Use web server rewrite modules

Again you can also use the Apache rewrite module to replace the original css file:

RewriteEngine On
RewriteRule "/static/contrib/css/bootstrap-theme.css"  \

A good stating point might be the themes at http://bootswatch.com.


If you add your own CSS file, the file bootstrap-theme.css will not be loaded anymore. So you might start with a copy of the original file. Use web server substitute module

You can also use the substitute module of the Apache webserver. It is not clear how much performance impact you get, since this module can scan and replace any text that is delivered by the web server.

If you for example want to replace the title of the webpages, you could do it like this:

<Location "/">
    AddOutputFilterByType SUBSTITUTE text/html
    Substitute "s/>eduMFA Authentication System</>My own 2FA system</ni"

15.1.4. Page title

You can configure the page title by setting EDUMFA_PAGE_TITLE in the edumfa.cfg file.

15.1.6. Headers and Footers

The administrator can change the header and footer of each page. We call this the baseline of the web UI. The original baseline is contained in static/templates/baseline.html. You can use a web UI policy to change this baseline or - of course - could use the web server rewrite module.

Read more about changing it via the web UI policies at custom_baseline.

15.1.7. Tokenwizard

You can add additional HTML elements above and underneath the enrollment wizard pages. Read the Token Enrollment Wizard and tokenwizard to learn more about those code snippets.

15.1.8. Token customization

Some tokens allow a special customization.

The paper token allows you to add CSS for styling the printed output and add additional headers and footers. Read more about it at the paper token Customization.

15.1.9. New token classes

You can add new token types to eduMFA by writing your own Python token class. A token class in eduMFA is inherited from edumfa.lib.tokenclass.TokenClass. You can either inherit from this base class directly or from another token class. E.g. the TOTP token class is inherited from HOTP. Take a look in the directory edumfa/lib/tokens/ to get an idea of token classes.

A token class can have many different methods which you can find in the base class TokenClass. Depending on the token type you are going to implement, you will need to implement several of these. Probably the most important methods are check_otp, which validates the 2nd factor and the method update, which is called during the initialization process of the token and gathers and writes all token specific attributes.

You should only add one token class per Python module.

You can install your new Python module, wherever you want to like myproject.cooltoken.

If these tokens need additional enrollment data in the UI, you can specify two templates, that are displayed during enrollment and after the token is enrolled. These HTML templates need to be located at edumfa/static/components/token/views/token.enroll.<tokentype>.html and edumfa/static/components/token/views/token.enrolled.<tokentype>.html.


In this example the python module myproject.cooltoken should contain a class CoolTokenClass. The tokentype of this token, should be named “cool”. And thus the HTML templates included by eduMFA are token.enroll.cool.html and token.enrolled.cool.html.

The list of the token modules you want to add, must be specified in edumfa.cfg. See 3rd party token types.

15.1.10. Custom Web UI

You can also write your complete new WebUI. To do so you need to specify files and folders in edumfa.cfg. Read more about this at Custom Web UI.