XLSX to HTML converter

The XLSX file format is a modern extension of the classic XLS file format. It is a Microsoft Excel-sponsored file type designed for storing and exchanging tabular data. An XLSX extension is a collection of multiple binary files stored in an Open Packaging Convention (OPC) container and compressed into one single file.

Due to its compatibility with multiple Office programs and its open XML structure, users can open and edit data stored in an XLSX file easily. Additionally, XLSX files support many features that are not present in the classic XLS file type, such as filters, custom properties, and more robust ways to present data with charts or graphs.

Hypertext Markup Language (HTML) is the standard markup language used for creating web pages and web applications. It is a system for annotating text, images and other content to provide a structured document with logical sections. HTML is used to create electronic documents (pages) that are displayed on the World Wide Web and each HTML page contains a series of HTML tags that control the appearance of an element or control specific behaviour.

HTML files must be saved with the .html file extension in order for them to be recognised by web browsers as HTML documents. The tags provide a series of instructions which are interpreted by browsers like Google Chrome, Firefox or Internet Explorer to render the content of the HTML page properly.