Opening VL Files

The VL file type is primarily associated with iverilog.

VL	File extension: VL
	File type:	source code file

What is a VL file?

VL files mostly belong to iverilog. The VL file extension applies to several distinct file types.
Most often, a VL file is a Verilog source code file used to describe digital circuits with the Verilog hardware description language. Designers write these files in plain text and then use tools such as iverilog or Icarus Verilog to compile and simulate their circuit designs. When you open a Verilog VL file, you may notice keywords like module or endmodule that signal its coding purpose. For further details on Verilog, you can refer to the Verilog website or the Icarus Verilog page.
Other uses for the VL extension include:

VisionLog Files: Created with Cognex VisionPro, these files store vision system data.

VisionLib Tracker Config Files: Often formatted in JSON, they hold configuration data for tracking systems.

Karaoke Lyrics Files: Used in karaoke software, these contain lyrics or MIDI song data.

FilExt.com tip: The file is text-based, so opening it in a text editor can help reveal its structure and purpose.

How can I open a VL file?

You need a suitable software like iverilog to open a VL file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your VL file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a VL file directly in the browser:. Just drag the file onto this browser window and drop it.

Online VL Text Viewer

Choose your .vl file to analyze

or drag and drop it here

Online File Viewer

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VL format details:

The file format, which is the arrangement and type of data in a file, determines which program can open the file. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. However, different programs can use the same file extension, and file extensions can be assigned incorrectly. Knowledge is power - this also applies when dealing with unknown or faulty files. Our evaluation of the VL files is as follows:

The VL file type is used by many programs, each with its own file format. The file formats most commonly found in VL files are:

• 10% of all VL files start with the bytes `include, which are crucial for this file format. If you open these files in a text editor, you can view and read the content yourself. VL files are between 390 bytes and 1 KB in size. The keywords include, module, Question, reg, initial begin and wire are typical for these files. Files like these have the following tags: question.
• 10% of all VL files start with the bytes FF FF 00 01 crucial for this file format. The contents of these files cannot be read by a human; only a computer program can interpret the data. A typical file size is 4 KB. Several words can almost always be found in the files, e.g. Snap Tool 1. A common filename is LOG00001.VL or LOG00000.VL.

All other VL files (80%) have no uniform format, such as Source, XML, JSON and module. The category is video, videos, videoplayback, adder, counter, holan or woman. Just click the "Choose your .vl file to analyze" button on this page to find out what your VL file is.