This Joomla backup plugin allows you to save Joomla extension settings: modules, plugins, templates and components configurations.
How many times has it happened to modify the settings of a plugin, a module or a template and, after various tests, not being able to go back to the previous configuration?
With Params Backup you can save settings of Joomla extension you are editing, and then reload them when necessary, with one click.
The settings are saved in json format in files stored in a folder inside the Params Backup plugin.
This backup plugin for Joomla inject a new tab into the forms of modules, plugins, templates, and components configurations, accessible from the administrative area of a Joomla website.
The tab contains the three main buttons of the plugin: save, load, delete. These are used respectively to save the current settings of the extension you are working on, to load previously saved settings, to delete a previously saved and no longer needed file.
Read more https://extensions.joomla.org/browse/new/extension/params-backup