A daily updated filename extension database!

FCGI file extension

The table below provides useful information about the .fcgi file extension. It answers questions such as:

  • What is the .fcgi file?
  • What program do I need to open a .fcgi file?
  • How can the .fcgi file be opened, edited or printed?
  • How can I convert .fcgi files to another format?
  • Where can I find the specifications for .fcgi?
  • Which MIME-type is associated with the .fcgi extension?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

FastCGI Application

FCGI file is a FastCGI Application. FastCGI is a binary protocol for interfacing interactive programs with a web server. FastCGI is a variation on the earlier Common Gateway Interface (CGI).
FCGI format description not yet available
Application: FastCGI
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
FCGI aliases:
FCGI related links:
FCGI related extensions:
Common Gateway Interface

Perl Script

JSP Markup Language

Fly Script

Perl Module

Other types of files may also use the .fcgi file extension.

The .fcgi file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

cgi, fci

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Common Gateway Interface
RAD Studio CodeGuard Configuration
Erosion 3D Inflow Table
Fiery Clone Tool Image
FastCGI Application

Can't open a .fcgi file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .fcgi file association, check the FAQ.

Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .fcgi file extension, write to us!

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