.HTMI File Extension

Hypertext Markup Language File

Acceptable file types can be specified with the accept attribute. It takes a comma-separated list of allowed file extensions or MIME types. Some examples are accept="image/png" or accept=".png" which ...

General Information

Title HTML File Extension
Extension .htm, .html
Full Form Hypertext Markup Language File
File Type Markup Language File
Developer World Wide Web Consortium (W3C), WHATWG
MIME Type text/html

File Function

Primary Function Webpage structure
Additional Functions Reference media, scripts
Features Text-based, Standardized

File Characteristics

Quality Markup dependent
Supports Layers No
Supports Transparency Via CSS
Editable Yes

Use Cases

Web Development Yes
Web Design Yes
Documentation Yes

Security and Practices

Security Risks XSS, Phishing
Best Practices Validation, Sanitization

Historical/Version Information

Initial Release 1991
Latest Version HTML5 (2014)

Associated Types

Similar Extensions .css, .js, .php, .asp

Software Compatibility

Software Usage Policy OS Compatibility
Google Chrome Free Windows, Mac, Linux, Android, iOS
Mozilla Firefox Free Windows, Mac, Linux, Android, iOS
Microsoft Edge Free Windows, Mac
Safari Free Mac, iOS
Text Editors Free, Paid Varies