# Running Tests
```eval_rst
.. toctree::
from-web
from-local-system
from-ci
custom-runner
../tools/certs/README.md
```
The simplest way to run the tests is via the public website. More detail on
that approach is available in [Running tests from the Web](from-web).
Contributors who are interested in modifying and creating tests should refer to
[Running Tests from the Local System](from-local-system).
Contributors with write access to the repository can also trigger full runs
in our CI setups, see [Running Tests on CI](from-ci).
Advanced use cases may call for a customized method of executing the tests.
Guidelines for writing a custom "runner" are available at [Writing Your Own
Runner](custom-runner).