XLS to HTML Converter
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What is a XLS file?
XLS is the proprietary spreadsheet format used by Microsoft Excel prior to the introduction of XLSX in 2007. It uses a binary file structure and supports formulas, charts, macros, and formatting.
XLS files remain widely compatible and are still used in many organizations. However, XLSX offers better performance and security.
How to open XLS files
XLS files can be opened using Microsoft Excel, Google Sheets, LibreOffice Calc, and other spreadsheet applications. They support charts, formulas, and formatting.
To ensure compatibility and security, convert XLS to XLSX or ODS using AnyConv or within Excel itself.
Key facts about XLS
- Full name: Microsoft Excel Binary File Format
- Extension: .xls
- MIME type: application/vnd.ms-excel
- Developed by: Microsoft
- Initial release: 1987
Useful links and resources
What is a HTML file?
HTML (Hypertext Markup Language) is the standard language for creating web pages and web applications. It uses tags to structure text, images, multimedia, and interactive elements in a browser-readable format.
HTML files form the backbone of websites and are universally supported by all web browsers. Combined with CSS and JavaScript, HTML enables dynamic and responsive web design.
How to open HTML files
HTML files are opened directly in web browsers. To view or edit the code, use any text or code editor such as Notepad++, Atom, or Visual Studio Code.
You can convert HTML to formats like PDF or EPUB using AnyConv or online conversion tools.
Key facts about HTML
- Full name: Hypertext Markup Language File
- Extension: .html
- MIME type: text/html
- Developed by: W3C
- Initial release: 1991
Useful links and resources
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❓ Frequently Asked Questions
- Do I need to register to convert XLS files?Not at all! You can convert XLS to HTML without signing up or installing anything.
- Is it safe to convert XLS to HTML on AnyConv?Absolutely. All XLS and HTML files are securely handled and automatically deleted after 1 hour. Nobody can access your data.
- Will the quality change after converting XLS to HTML?We do our best to preserve the original quality during XLS to HTML conversion. The result is accurate and clean.
- How long does it take to convert XLS to HTML?Most conversions from XLS to HTML take just a few seconds — even for larger files.
- Can I upload more than one XLS file?Yes, batch conversion is supported. You can convert multiple XLS files to HTML at once — fast and easy.
- What browsers support XLS to HTML conversion?All modern browsers! Chrome, Firefox, Safari, Edge — AnyConv runs online and supports converting XLS to HTML on any platform.