Detect a file type online from an unknown document

CheckFileType Online - 100% Free & Secure

Determine any file type, file extension, and MIME type based on the file contents

Check out the latest file types detectedCheck a File Type

Get Free API Acess by doing any of the following:

1) Link to
If you place a link on a reputable blog, website or forum we will give you API access up to 100 API calls per day. Copy and Paste the following code:

<a href="">Online File Type Checker </a>

2) Write an article about
Write a blog post or article about and earn 300 API calls per day

3) Make a video tutorial about>
Once your video is live and on a well visited website we will give you 300 API calls per day.

Once your link, video, or article is ready contact us at api [at]