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HTML5 Hypertext Markup Language revision 5 source
File type: Text file, Internet related file, Source code and script file
Files with html5 extension can be sometimes found as html5 source codes for web pages. Usually the extension is just HTML.
File type category:
Text file
Internet related file
Source code and script file
Date updated: April 23, 2026
File extension html5 is occasionally used for fifth revision of the HTML standard, which is a a core technology markup language of the Internet used for structuring and presenting content for the World Wide Web.
However, the standard extension for HTML5 is html.
Any text editor can open and edit these files, whilst web browsers probably can view these files only if the extension is HTML.
Various conversions are possible, depending on what you want to do with the HTML5 file.
Software applications that can open html5 files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software applications that can edit html5 files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software capable of saving html5 files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Programs for viewing html5 files:
Microsoft Windows
Apple macOS / Mac OS X
Software apps that create html5 files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software apps that export html5 files:
Microsoft Windows
On-line services