Difference Between HTM and HTML (With Table)

HTML stands for HyperText Markup Language. It is a computer language that is used to create and design web pages. Mark-up tags are used here for expressing the web pages.

HTML and HTM are nothing but  file extensions of such HTML files. They are indicated as .html or .htm as file extensions. HTM is only used as another extension for HTML and this occurs due to certain issues. The main one being that a few operating systems prohibit the usage of four letters in the extension, so here HTML cannot be used.

On the other hand, there are some servers that prohibit the use of .htm. In today’s world, the four-letter extension is not an issue, since computers can simply hold huge files and long file names.

HTM vs HTML

The difference between HTM and HTML is the one letter ‘L’. .htm is used as a substitute extension for .html. This is because a few operating systems like DOS and other servers do not allow four-letter extensions. Previously the operating systems were not so strong and did not have the capability to hold a four-letter extension, so HTM came into being.

 

Comparison Table Between HTM and HTML (in Tabular Form)

Parameter of ComparisonHTMHTML
ExtensionThe extension for the HTM file is .htmThe extension for the HTML file is .html
LettersIt has a three-letter extension.It has a four-letter extension.
UseHTM was mainly used in the ancient days when the operating systems were not strong enough to hold four-letter extension.HTML is more popular and used today since computers can comfortably store huge files and long file names.
Operating SystemsOld operating systems, as well as new ones, can use .htm extension.Mainly new operating systems use .html extension.
FocusModern systems do not focus on HTM extensions.Modern systems mainly focus on HTML extensions.

 

What is HTM?

Previously the operating systems were not so strong and did not have the capability to hold a four-letter extension, so HTM came into being.

This was mostly used in the ancient days for the operating systems like Windows and Disk operating system (DOS). It was mainly used when there were compatibility issues with the operating system.

The old operating system used HTM as they were not capable of holding files with long names. But in today’s modern world, the systems are capable enough and fast to hold huge files with no limitation to the length of the file names and hence HTML extensions are used.

The file extension HTM is used to make users aware of the data type that is asked for and to differentiate between the extensions of web pages also. File extensions play a key role. When we try to open a particular file on our computer but it does not open, it suggests that the needed program is unavailable on our computer.

Thus, it can be said that files that carry the .htm file extension hold nothing but HTML web page files itself. It carries HTML markup code that is kept in a plain-text format. These files are used for formatting and displaying text and images in a Web browser.

 

What is HTML?

HTML stands for Hypertext Markup Language. It permits one to structure and design a web page. The web page can include different sections, headings, paragraphs and links. We cannot say that HTML is a programming language since it is not capable of creating strong functionality.

Every HTML page comprises a set of tags which are also referred to as the building blocks of the web pages. It develops a hierarchy that organises the content into different sections, headings, paragraphs and so on. We simply use tags to create a web page when we work with HTML.

The most important tags that every HTML must have are <html>, <head>, and <body>.

There are numerous tags that one has to use to design a web page. Mostly, a website comprises of a number of different HTML pages. There can be the Home pages, the About pages, the FAQ page, the Contact pages and all of them will have different HTML documents.

In general, HTML is a straightforward language that can be learnt easily.


Main Differences Between HTM and HTML

  • HTML and HTM are nothing but HTML file extensions. The main difference is that .htm is used as a substitue for .html for a few operating systems that do not hold four-letter extensions.
  • HTM was mainly used in the ancient days, when the operating systems were not strong enough to hold four-letter extension, whereas HTML is more used today since computers can comfortably store huge files and long file names.
  • The extension for the HTM file is .htm whereas the extension for the HTML file is .html
  • The modern systems do not focus on HTM extensions anymore and HTML extensions are used more in the modern systems.
  • HTM has a three-letter extension while HTML has a four-letter extension.

 

Conclusion

HTML files have extensions like .html and .htm.  While designing a web page, if you are using HTML, then in all probability, a .html or .htm will appear at the end of the URL. There is not much difference between HTML and HTM. It can be said that the difference between HTML and HTM is of its spelling.

Both can be used in place of one another, but there are a few operating systems or servers that do not allow .htm extension, while there are some that do not accept .html extension.

HTML files either with a .html or .htm extension.

In many servers, it is favoured that only the .html files can be provided to prohibit the .htm extension files to be shown. It may also be taken as a precaution for hosted servers. Thus, it can be concluded that both HTML and HTM are the same and that they use the same script and exhibit the same content. It is on the user as to which extension he finds more comfortable and which one he chooses as an extension for his file name.

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