Mozilla Observatory (Website)
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Mozilla HTTP Observatory :: Website

The Mozilla HTTP Observatory is a set of tools to analyze your website and inform you if you are utilizing the many available methods to secure it.

It is split into three projects:

TLS evaluation relies on external scanners, such as Mozilla's TLS Observatory.


If you just want to use a local version of the website, you can simply clone the dist directory:

$ git clone -b gh-pages

However, it comes with a built-in web server that will automatically regenerate the SRI hashes:

$ git clone
$ pip install -r requirements.txt
$ make devserver

Note that this will still use the global Mozilla Observatory API endpoints; you will need to change httpobs.js and httpobs-third-party.js if you wish to use your own local endpoints.


  • April King


  • Mozilla Public License Version 2.0