CheckFileType Online - 100% Free & Secure Determine any file type, file extension, and MIME type based on the file contents

This is a list of computer file formats, categorized by domain. Some formats are listed under multiple categories. Most of the file endings are traditionally written lower case, at least on …

Easiest way to find your file types, get instant and accurate results.

Tip As of PHP 5.0.0, this function can also be used with some URL wrappers. Refer to Supported Protocols and Wrappers to determine which wrappers support stat () family of functionality.

A list of common file extensions and file types that are good to know.

Jul 27, 2025 · File Formats store a large variety of raw information in a structured format so that the data can be easily stored, processed, and harnessed. A file format is a standard way of …

Detect the file type of a file, stream, or data. Latest version: 21.0.0, last published: 5 months ago. Start using file-type in your project by running `npm i file-type`. There are 2595 other projects …

Dec 10, 2025 · Google can index the content of most types of pages and files. Explore a list of the most common file types that Google Search can index.

Nov 2, 2022 · Infer file type and MIME type of any file/buffer. No external dependencies.

Note: You can do this in any search engine by typing filetype: and the type of file you're seeking. This will be modeled in the search bar when you use the File type filter.