MIME Type Lookup

What is MIME Type Lookup?

MIME Type Lookup is a free, browser-based tool that helps you get the job done quickly. Find file extension by MIME type and vice versa. It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.

Used by

• Backend developers
• Frontend developers
• DevOps engineers
• Students

Recommended workflow

1. 1

   Prepare the input

   Use this tool as the focused step in a larger browser-based workflow.

2. 2

   Run MIME Type Lookup

   Review the preview, copy or download the result, and keep everything local in your browser.

3. 3

   Next recommended tool

   Base Converter: Convert between binary, octal, decimal, hex, base32, base36.

   Open tool
4. 4

   Then continue with

   Base64 Encoder/Decoder: Encode plain text to Base64 or decode Base64 — UTF-8 safe.

   Open tool
5. 5

   Then continue with

   BBCode Converter: Convert between BBCode and HTML in both directions.

   Open tool

Frequently asked questions

How do I use MIME Type Lookup?

Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Find file extension by MIME type and vice versa.

Is my data uploaded or stored anywhere?

No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.

Is MIME Type Lookup free?

Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.

What's the maximum file size?

There's no hard limit imposed by the tool. Because processing happens in your browser, the practical ceiling is your device's available memory — most everyday files work instantly.

Do I need to install anything?

No installs and no extensions — it runs entirely in your web browser and even works offline once the page has loaded.