HDML File – What is .hdml file and how to open it?


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HDML File Extension

Handheld Device Markup Language File – file format by Openwave

HDML (Handheld Device Markup Language File) is a markup language designed for handheld devices with limited capabilities, developed by Openwave. It allows the creation of interactive web pages that can be presented on small screens and navigated using basic input devices.

HDML File Definition

The Handheld Device Markup Language (HDML) file, denoted by the “.HDML” extension, is a markup language specifically designed for mobile devices and handheld computers. It was developed by Openwave in the 1990s and intended to provide a platform-agnostic approach to displaying content on various devices, including low-end mobile phones and personal digital assistants (PDAs).

Functionality and Features

HDML files utilize a hierarchical structure and a set of tags to define the presentation and behavior of content. They provide a mechanism for structuring text, images, forms, and interactive elements, allowing for the creation of menus, navigation links, and simple forms. Additionally, HDML supports data input and output and can communicate with server-side applications using HTTP requests. Its primary purpose was to enable the delivery of interactive content and basic web services on limited-bandwidth and resource-constrained devices, offering a precursor to modern mobile web technologies.

Opening HDML Files

HDML is a markup language designed for handheld devices such as mobile phones and PDAs. Files with the .HDML extension contain instructions for defining the layout and content of web pages specifically tailored for these devices. When websites were initially developed, HDML was a popular format for mobile web pages due to its lightweight structure and ability to adapt to various screen sizes and capabilities of handheld devices. However, with the advancement of mobile technology and the introduction of more sophisticated web technologies, HDML has become less prevalent.

To open an HDML file, you will need an application capable of interpreting the markup language. In the early days of mobile web browsing, there were several browsers that supported HDML, such as Openwave Browser and Nokia Browser. However, as HDML declined in popularity, support for it in modern browsers dwindled. To open an HDML file on a modern computer, you can use a web emulator that can simulate the behavior of an HDML browser. Alternatively, you can try converting the HDML file to a more modern web format, such as HTML or XHTML, using a conversion tool or online service.

Definition and History

Handheld Device Markup Language (HDML) is a proprietary markup language specifically designed for mobile devices. It was created in the late 1990s by Openwave Systems, a pioneer in mobile internet technology. HDML is intended to provide a structured and efficient way to create and display content on small-screen mobile devices with limited processing power and bandwidth.

Characteristics and Features

HDML utilizes a simple and lightweight syntax, making it relatively easy to learn and implement. It employs a hierarchical structure to organize and present content. HDML allows developers to define various elements such as text, images, hyperlinks, tables, and forms. It supports dynamic content, allowing for interactive applications and user input. Additionally, HDML includes features for device detection and adaptation, ensuring that content can be optimized for different mobile device capabilities.

Other Extensions