Opening a C1 File

The C1 file type is primarily associated with 7-Zip.

C1	File extension: C1
	File type:	compressed file

What is a C1 file?

C1 files mostly belong to 7-Zip.

The C1 file is a compressed file that holds raw subtitle data. It uses the GZIP algorithm to pack the information into a smaller size, making file transfers and storage more efficient.
This file is not meant for direct editing. To view its content, you need to decompress it with a tool that supports GZIP decompression. Once the file is decompressed, you can open the resulting subtitle text using a simple text editor.

Key points provided by FilExt.com include:

It is an internal file format for storing subtitle data.
The GZIP method is used for compression.
Decompression is required before viewing or editing the subtitle data.

FilExt.com tip: These files are often part of multimedia projects or subtitle management systems. They serve a specific role in packaging subtitle information efficiently.

How to open a C1 file

You need a suitable software like 7-Zip to open a C1 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 C1 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a C1 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online C1 Text Viewer

Choose your .c1 file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert C1 files:

7-Zip
See the previous paragraphs to learn more about the main application. C1 files are often referred to as 7-Zip compresseds because this type of file is primarily created or used by this software.
Pov-ray for Windows (v3.1 Scenes Advanced Newltpot File) by Persistence of Vision Raytracer Pty Ltd.
An older Windows 3.1 file format, not generally used today.

C1 file format:

Every file has a defined file format, i.e. how the data is arranged in the file. The first characters in a file identify the file format, for example, HTML files start with the bytes <html>. However, different programs can use the same file extension, and file extensions can be assigned incorrectly. So a detailed analysis of a file is vital in order to determine the format and the associated program. Our evaluation of the C1 files looks like this:

C1 is rarely used as a file extension and includes different formats for the applicable programs. The two most popular formats are as follows:

45% of all C1 files are based on the popular GZIP file format. Gzip is a compressed archive file format. Gzip (GNU zip) is only capable of compressing a single file. The content consists of illegible binary data, which can only be read and interpreted by the associated programs. The file size is in the range of 440 bytes to 3 KB. The file type is a fairly new file format. A usual file name is RECORD.C1 or 000.C1.

The remaining 55% of all C1 files are different files with different signatures. Files like these are sometimes linked to protonbus. Just click the "Choose your .c1 file to analyze" button on this page to find out what your C1 file is.

Technical Data for C1 File Extension

File classification:

Compressed

Related files:

srt, ass, sub, idx, c1b, zip, gz, v1, c2, c, dbs, exe, 000, jpg, zlib, elf, get, txt

a c1 compressed file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with C1 files

Associate the C1 file extension with the correct application.
Update your software that should actually open compressed files. Because only the current version supports the latest C1 file format. Search, therefore, e.g. on the manufacturer website after an available 7-Zip update.
To make sure that your C1 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .C1 file online - secure, fast, and no downloads needed.