In Umbraco, we can't edit config files from Umbraco back-office. There is a long process to update the config file offline and then upload it to host server. Here I would like to introduce some package which helps you to change files easily from Umbraco back-office.
Package Installation :
You can download the package from Umbraco packages.
Or also you can install using the NuGet package manager using
Bingo... Now It is ready to use from Umbraco back office.
- You can edit CSS, js, config files, cshtml files.
- it takes backups to revert your changes in the app_data folder.