Opening a VWF File

The VWF file type is primarily associated with Quartus II.

VWF	File extension: VWF
	File type:	data file

What is a VWF file?

VWF files mostly belong to Quartus II. The VWF file extension is not limited to a single purpose.

Vector Waveform File: Most VWF files are vector waveform files used in digital design. They are generated by tools like Quartus II and hold simulation data such as timing and signal waveforms for FPGA projects.

Cadvance/ISICAD CADVANCE Drawing File: some of the files are drawing files used in CAD applications. These files store technical drawing information for design work and are used with software from CadVance or ISICAD.

Vioso Wavefront File: A small group are files associated with Vioso. They are used for projector calibration with the Vioso Anyblend Player. More info

When you open a VWF file, first check its header or other properties for hints about its origin.
FilExt.com tip: Use the correct application for your file type: Quartus II for vector waveform data, the appropriate CAD software for drawing files, or Vioso tools for calibration files.

How to open a VWF file

You need a suitable software like Quartus II to open a VWF 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 VWF file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a VWF file directly in the browser:. Just drag the file onto this browser window and drop it.

Online VWF Text Viewer

Choose your .vwf file to analyze

or drag and drop it here

Online File Viewer

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VWF format details:

A file format defines how the data in the file is structured. Often, the file format can be deduced from the file extension or the initial bytes (called the signature). However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. So a detailed analysis of a file is vital in order to determine the format and the associated program. Below is our analysis of the VWF files:

The VWF file extension is rather rarely used and covers different formats for different programs. But the following two file formats are common:

• 55% of all VWF files are Quartus Waveform simulation files, which are using the popular Source file format. A source code is the set of instructions written by a programmer using a computer programming language like JavaScript, C++ or Basic. This code is translated into machine language by a compiler. The translated result is called app, program or executable. The content consists of readable text data, which can be read using a text editor. Most of these files are 2 KB to 17 KB in size. This file type is based on cutting-edge technology. The keywords WARNING: Do NOT edit the input and output ports in this file in a text, editor if you plan to continue editing the block that represents it in, the Block Editor! File corruption is VERY likely to, /*<simulation_settings>, <ftestbench_cmd>quartus_eda --gen_testbench, quartus_eda --gen_testbench --tool, source, vector, --tool=modelsim_oem --format=verilog and verilog --write_settings_files are typical for these files. A common filename is Waveform.vwf or Waveform1.vwf. Such files sometimes refer to adder.
• 15% of all VWF files are associated with CADVANCE drawing. These files contain neither text nor words, but only data. A typical file size is 550 KB. The files contain the following words: F I T, Inc, File name, File name is, Update and CADVANCE drawing file version 7.00.

All other VWF files (30%) have different formats, such as Vioso warp/blend data and ISICAD. Just click the "Choose your .vwf file to analyze" button on this page to find out what your VWF file is.