All about RFB Files

The RFB file type is primarily associated with TigerVNC.

RFB	File extension: RFB
	File type:	data file

What is an RFB file

RFB files mostly belong to TigerVNC.

Remote Frame Buffer (RFB) files are used in several specialized ways. The most common type supports remote desktop communication. In this case the file carries display data over a network using the RFB protocol, which is used by VNC software such as TigerVNC to show a computer screen remotely.

Another use of the RFB extension is for storing radiotherapy beam data. In treatment planning systems like RayStation, these files hold the calibration and parameter details needed for precise beam delivery in radiation therapy.

A third role designates the file as a RoboForm Bookmark File. Although less prevalent, this variation is used to manage bookmark information for the RoboForm application available at RoboForm.

Key details as outlined by FilExt.com:

Remote desktop data uses a streamlined protocol for transmitting pixel information.

Treatment planning files contain technical beam parameters important for medical calibration.

Bookmark files may be used by RoboForm to store web-related data.

FilExt.com note: For proper opening and viewing, use the application designed for the file's origin: a VNC client for desktop data, RayStation for beam details, or RoboForm for bookmark management.

How to open RFB files

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

Online RFB Text Viewer

Choose your .rfb file to analyze

or drag and drop it here

Online File Viewer

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RFB format details:

To find out what program is needed to open RFB files, you need to determine the file format. A file format is determined by the file extension and signature, so JPEG images have the extension .jpg and the first bytes in the file are ÿØÿ. File extension, signature and file format must match; otherwise errors will occur when the file is opened. Knowledge is power - this also applies when dealing with unknown or faulty files. In the following you will find our evaluation of the RFB files:

The RFB file extension is not widely used. Such a file is used by different programs with different formats. The following file formats are most commonly found in RFB files:

• 55% of all RFB files have the same signature 00 01 00. They consist of illegible, cryptic characters. The file size is in the range of 120 KB to 4 MB. The file type was created recently. The files contain the following words: OpenVNC and RFB 003.003. bootcapture_2.rfb or bootcapture_1.rfb is a typical file name. These files are often associated with crashvideo.
• 15% of all RFB files start with the bytes 0E 56 65 72 73 69 6F 6E 3A crucial for this file format. They consist of unreadable binary data. RFB files are between 1 KB and 85 KB in size. The following keywords are characteristic: CBeam, No Applicator, CDepthDoseCurve and Version:6.6.26.

All other RFB files (30%) have different formats, often, for example, URL and RFB. If you want to find out which format your RFB file belongs to, just click on the button "Choose your .rfb file to analyze".