XUL Converter

Extract text from user interface files (XUL)


Drop or upload your .XUL file

How to extract text from your XUL file

  1. Click the "Select File" button above, and choose your XUL file.
  2. You’ll see a preview, if available.
  3. Click the "Convert file to..." button to extract text information.

Convert XUL to another file type

To convert XUL interface files to another format, you need Mozilla Firefox or other Developer software.

Convert a file to XUL

To convert other file formats to the "XML Markup Language" file type, you need software like Mozilla Firefox or a similar tool.


About XUL files

The .XUL file is an XML User Interface Language file originally created by the Mozilla Foundation. It is a markup language used to build the graphical user interface for legacy Mozilla Firefox, Mozilla Thunderbird, and SeaMonkey extensions. It relies heavily on Mozilla's Gecko rendering engine to draw buttons, menus, and layout containers.

The main disadvantage of the .XUL format is that it is obsolete and heavily proprietary. Modern web browsers, including recent versions of Firefox, no longer support native XUL extensions, having shifted entirely to standard WebExtensions technologies. Consequently, a .XUL file cannot be opened natively as a functional web page in browsers like Google Chrome or Microsoft Edge.

Users typically need to convert these files to modern web standards, primarily HTML, CSS, and JS. However, because XUL contains application-specific XML nodes, an automated 1:1 conversion into a working HTML interface is rarely possible without losing functionality. Most users simply need to extract the raw code as TXT or XML to rewrite the interface manually.

Because this file format is essentially a specialized XML document, it is difficult to convert into a functional webpage automatically. Standard online converters fail to process the proprietary Mozilla nodes. However, convert.guru can still identify the file format, inspect the plain text, and show the internal XML content. Just drag and drop your file to see what it is, extract the raw data, and convert it to common text formats when possible.

Convert.Guru analyzes your XUL file, detects the exact format, and lets you read the text inside.

Users also converted JSM, MAFF and MOZLZ4 files.


FAQ

If you want to convert XUL file to HTML, HTM, CSS, JS, PHP, ASP, ASPX, JSP, JSPX, PY, RB or PL, you can use Mozilla Firefox or similar software from the "UI Layout Definition" category. In the File menu, look for Save As… or Export….

To convert RSS, CSS, CGI, SITEMAP, PL, WEBMANIFEST, JSON, JS, XML, HTML, ICO or HTM files to XUL, try Mozilla Firefox or another comparable tool in the "UI Layout Definition" category.



The XUL Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our XUL converter.