Format
======

Usage: `format(image-format)`

Description
-----------

This filter specifies the output format of the image. The output must be
one of: "webp", "jpeg", "gif", "png", "avif" or "heic".

Arguments
---------

- ``image-format`` - The output format of the resulting image.

Example
-------

::

    http://localhost:8888/unsafe/filters:format(webp)/https%3A%2F%2Fgithub.com%2Fthumbor%2Fthumbor%2Fraw%2Fmaster%2Fexample.jpg