Keyhole Markup Language Format
If you want to edit KML file and not damage it, you should install dedicated software There are many tools known as KML Online Editors, but it is not certain that they operate in a way that keeps the data contained in the file safe.
Please note that not every program that supports KML will allow you to edit the file. Additional information about the KML file extension can be found here.
This is the best way. Use any of the programs that support the KML file to check if it allows you to edit the file. It's safest to download the software from the developer's website. You can find direct links to the creators' websites on the subpages of each application. Below you will find some examples of software programs that support the KML file (so it is very possible that they can edit files in KML format).
And here is the full list of programs supporting the KML file
Remember that many file types have a text format and you can preview their contents by opening them, for example, with Windows Notepad. However, such manual editing of the KML file or any other file may result in damage to the file. After saving the changes, it may not be possible to reopen the KML file. By far the safest way is to use file editing programs that works with the KML extension.
It seems that one of the software on the list must be able to edit the KML files. However, if for some reason you did not find this option, you can try using tools prepared by external websites. Verified websites with the option to edit the file in the KML format below.
Free Online File Edit Service
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