Image
What is a .html file?
A .html file is an Extensible Hypertext Markup Language (version 1.1). This is an image format — a picture, drawing or graphic. Confusingly, this extension has been used by 10 different formats over the years — they're all listed below.
This extension has been used by more than one format
10 different formats have claimed .html over the years, so two files with the same extension aren't necessarily the same kind of thing.
- Extensible Hypertext Markup LanguageVersion 1.1 · fmt/103
- Hypertext Markup LanguageVersion 2.0 · fmt/97
- Hypertext Markup LanguageVersion 4.01 · fmt/100
- Hypertext Markup LanguageNo version recorded · fmt/96
- Hypertext Markup LanguageVersion 3.2 · fmt/98
- Netscape Bookmark File FormatNo version recorded · fmt/1132
- Vector Markup LanguageNo version recorded · fmt/583
- Hypertext Markup LanguageVersion 5 · fmt/471
- Hypertext Markup LanguageVersion 4.0 · fmt/99
- Extensible Hypertext Markup LanguageVersion 1.0 · fmt/102
How to open a .html file
- GIMP (free) and IrfanView open a very wide range of image formats, including obsolete ones.
- XnView MP is the best bet for unusual or legacy image types.
- Your operating system's built-in viewer may work for mainstream formats.
The registry records this extension against Extensible Hypertext Markup Language, Hypertext Markup Language, Hypertext Markup Language and others, so software from that family is the most likely match.
How to convert a .html file
- Open it in GIMP or XnView and export as .png (lossless) or .jpg (smaller).
MIME type
When a .html file travels over the web, servers label it with one of these MIME types:
application/xhtml+xmltext/htmlThe technical record
For archivists, developers and the merely curious: these are the PRONOM registry entries for .html.
| Format name | Version | MIME type | PUID |
|---|---|---|---|
| Extensible Hypertext Markup Language | 1.1 | application/xhtml+xml | fmt/103 |
| Hypertext Markup Language | 2.0 | text/html | fmt/97 |
| Hypertext Markup Language | 4.01 | text/html | fmt/100 |
| Hypertext Markup Language | — | text/html | fmt/96 |
| Hypertext Markup Language | 3.2 | text/html | fmt/98 |
| Netscape Bookmark File Format | — | — | fmt/1132 |
| Vector Markup Language | — | — | fmt/583 |
| Hypertext Markup Language | 5 | text/html | fmt/471 |
| Hypertext Markup Language | 4.0 | text/html | fmt/99 |
| Extensible Hypertext Markup Language | 1.0 | application/xhtml+xml | fmt/102 |