.HTML File Extension
Full form: HyperText Markup Language
What is a .html file?
The standard markup language used to structure web pages. Files that end with .html belong to the web family of file types, so your computer links them with a suitable program automatically.
Where is .html used?
Building websites and web pages. Because the format is so common, almost every modern device and software understands it.
Examples of .html file names
index.html
How to open a .html file
You can open it with: Any browser, VS Code, Notepad. If it does not open, check that the file is not damaged and that you have downloaded it fully; also confirm that the extension was not renamed by mistake.
Quick tips
Never rename a file just to change its extension, because that does not convert the data inside. Use a proper converter or the Save As / Export option. Keep a backup copy of important web files before editing them.