Detect File Type

Detect File Type is a free online File Tools tool that attempts to guess the MIME (Multipurpose Internet Mail Extensions) type of the data based on 'magic bytes'. Currently supports the following file types: instantly in your browser. Paste your data, adjust the options and get the result in real time — no installation, no sign-up, and nothing is ever uploaded to a server.

How to use: Detect File Type →

Description

Attempts to guess the MIME (Multipurpose Internet Mail Extensions) type of the data based on 'magic bytes'. Currently supports the following file types:

  • This tool runs the official CyberChef engine on the 26173 server. Avoid pasting secrets you would not send to any server.

How to use

Using Detect File Type takes three steps:

  1. Paste your data into the input box (or load the example).
  2. Configure the options to match your target format or scenario.
  3. Copy, download or inspect the output — it updates live as you type.

Use cases

Common situations where Detect File Type helps:

  • Attempts to guess the MIME (Multipurpose Internet Mail Extensions) type of the data based on 'magic bytes'. Currently supports the following file types:
  • This tool runs the official CyberChef engine on the 26173 server. Avoid pasting secrets you would not send to any server.

FAQ

What is Detect File Type?

Detect File Type attempts to guess the MIME (Multipurpose Internet Mail Extensions) type of the data based on 'magic bytes'. Currently supports the following file types:. It runs entirely in your browser, so your data stays private.

Is Detect File Type free to use?

Yes. Detect File Type is free, unlimited and works without registration or installation.

Does my data get uploaded?

Is my data uploaded for this tool? — This tool is processed on our server by design; input is used only for the computation and is not stored.

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