All about CGI Files

The CGI file type is primarily associated with Perl.

CGI	File extension: CGI
	File type:	script

What is a CGI file?

CGI files mostly belong to Perl by Larry Wall. A CGI file is a script that a web server executes in order to handle dynamic web page requests over Common Gateway Interface protocol. A CGI script is usually written in Perl language with embedded HTML but any dynamic website scripting language (e.g. Python or PHP) may be used for the same purpose. It is mainly used to perform behind-the-scenes operations such as sending an email. A code/text editor may be used to edit such a script. Another type of CGI file is a PDF document generated by FOP (Formatting Objects Processor).

How to open CGI files

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

Online CGI Text Viewer

Choose your .cgi file to analyze

or drag and drop it here

Online File Viewer

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CGI format details:

Why is it important to know the file format? This is the only way to find out which program to use to 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. Frequently, however, one file extension is used by different programs for different file formats, and one file format for different file extensions. If there are problems opening a file, you must first determine the file format used. Our examination of the CGI files comes to the following conclusion:

The file type with the extension 'CGI' includes different formats for the applicable programs. The file formats most commonly found in CGI files are:

• 30% of all CGI files are using the well-known ELF file format to store the data. ELF is the abbreviation for Executable and Linkable Format and is the standard binary format on Linux and Unix. If you open these files in a text editor, you will see only illegible characters. CGI files are between 5 KB and 350 KB in size. The file type is relatively new. The file name status.cgi is typical for these files.
• 15% of all CGI files are based on the popular PDF file format. PDF is short for Portable Document Format, is a file format to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems. If you open these files in a text editor, you will see only illegible characters. Most of these files are 37 KB to 1 MB in size. The file name viewcontent.cgi is characteristic of these files. Such files are related to webrep.

All other CGI files (55%) have no consistent format, the following 5 formats exist: shell script, HTML and ZIP. These files are often connected to secure, attachment, irislink, barcode, change, config, filter, portal, image, index, query or list. Just click the "Choose your .cgi file to analyze" button on this page to find out what your CGI file is.