Yes HTML pages can be converted into other formats. You need to use jQuery and JavaScript for that purpose.
HTML is important to web browsers as it forms the web pages. The web pages are the ones which run on the browsers.
The main difference is that HTML is used to create dynamic web pages. Other than this HTML cannot do much.
HTML is used to create forms. As it is not a programming language it cannot process the forms or make them do anything. So for example it can create a button but it cannot make something happen when you click it. To do that, you need a programming language. Javascript is a programming language that is used in HTML pages to do lots of things, including the processing of forms.
An HTML conversion application helps to convert HTML pages into other formats. You can do this by exporting JS also.
HTML is for creating web pages, so HTML is essential to the internet. It can also be used on other networks that support it, like ones that are private networks in companies and organisations.
You can make HTML pages and JSP pages for web attractiveness. JSP pages offer additions features to it.
A browser is an application that is used to view web pages. Opera is the name of one browser. There are lots of other ones. HTML is the language that is used to create web pages. People write HTML code to create web pages. Browsers read the HTML code and then display the page in the browser.
You can create any type of pages using HTML because html is a language used to create web pages for display in browser. And you can also create a static page by using HTML.
DHTML means the web page or web application uses JavaScript and HTML DOM (Document Object Model) and possibly CSS. A programmer can create dynamic web pages using these technologies. For example when I move the mouse over a image link, I can change the image. ASP and ASP.NET pages are converted to HTML by a server.
There are no disadvantages of HTML compared to other languages, simply because HTML is the only language that is used to display web pages. No other language does that, so therefore there is no way to compare it to another language.
HTML is required to create web pages.
HTML is being used as a source to create web pages. Dynamic Web pages are being created by HTML now.