What is a CHAT file?
A .CHAT file usually stores the text of a digital conversation or online meeting. Because different applications use the .CHAT extension, the exact file format can vary. It is most commonly a meeting chat transcript created by Zoom or a message log from Cisco Webex Meetings. Historically, the extension was also used by Apple iChat to save instant messaging sessions. Additionally, .CHAT files sometimes store configuration settings for IRC clients or game modifications like the Prat addon for World of Warcraft.
How to open CHAT files?
If your .CHAT file is from Zoom, it is a plain text file. You can open it easily with basic text editors like Notepad on Windows or TextEdit on macOS. Cisco Webex Meetings often structures these files in standard JSON format, which means you can view them in a text editor or a code editor like Visual Studio Code. Older Apple iChat log files use a different internal format and may require the original software or a specialized log viewer on a Mac to read them correctly.
Best practices and troubleshooting
If you try to open a .CHAT file and see unreadable symbols, it is likely an older proprietary format rather than plain text. Do not force the software to save over the original file, as this can corrupt the text data. Because .CHAT has multiple possible meanings, it is important to identify the origin of the file before trying to convert it to another format like .TXT or .PDF.
Identify and view with viewer.online
Because the internal format can vary, viewer.online/chat can analyze .CHAT files to identify the exact format and creator software. It allows you to inspect the file structure, extract readable text, and check whether an online preview is available.
Summary
viewer.online/chat is useful for identifying, inspecting, and understanding .CHAT files without installing software or dealing with compatibility problems.