> If you have built websurfx with an unstable/rolling/edge branch then you can copy the configuration file from `websurfx/config.lua` located under the project directory (codebase) to `~/.config/websurfx/` and make the changes there and rerun the websurfx server. _This is only available from unstable/rolling/edge version_.
If you have installed `websurfx` using the package manager of your Linux distro then the default configuration file will be located at `/etc/xdg/websurfx/`. You can copy the default config to `~/.config/websurfx/` make the changes there and rerun the websurfx server.
- **production_use:** Whether to use production mode or not (in other words this option should be used if it is to be used to host it on the server to provide a service to a large number of users). If production_use is set to true. There will be a random delay before sending the request to the search engines, this is to prevent DDoSing the upstream search engines from a large number of simultaneous requests.
> - Level 2 - With this level the upstream search engines are restricted to sending sensitive content like NSFW search results, etc.
> - Level 3 - With this level the regex-based filter lists are used alongside level 2 to filter more search results that have slipped in or custom results that need to be filtered using the filter lists.
> - Level 4 - This level is similar to level 3 except in this level the regex-based filter lists are used to disallow users to search sensitive or disallowed content. This level could be useful if you are a parent or someone who wants to completely disallow their kids or yourself from watching sensitive content.
- **colorscheme:** The colorscheme name which should be used for the website theme (the name should be by the colorscheme file name present in the `public/static/colorschemes` folder).
- **theme:** The theme name that should be used for the website (again, the name should be by the theme file name present in the `public/static/themes` folder).
> This option can be commented out if you have compiled the app without the `redis-cache` feature. For more information, See [**building**](./building.md).