Does MIME Type Lookup upload my input?

No. This tool runs in your browser unless the privacy badge explicitly says a server route is required.

Can I use this for production secrets?

Avoid pasting sensitive production data into any website. Prefer local test data or redacted payloads.

mime type lookupcontent type lookupfile mime typemime type checkerPrivacy: Browser local

Look up common MIME types by file extension or content type.

Input / Output

Input, output, and copy actions stay in this main surface. Examples and reference checks are separated below.

Copy-ready output

Extension or MIME typeMode

Output

Copy-ready output

json: application/json

Local session

Input state is saved only in this browser so you can restore the last workspace without an account.

Open examples, checks, and related tools only after the primary input/output flow is done.

Web operations workbench

Inspect an image data URL

Preview Base64 image data, confirm the MIME type, then check presentation contrast before sharing.

3 Tools

1. Base64
Detect image bytes and preview the data URL without copying binary text.
2. MIME
Confirm the extension and content type used by the image.
3. Color
Check contrast when the image is used in a QR, badge, or document background.

Before copying

Common failure cases

Guides

Open examples, checks, and related tools only after the primary input/output flow is done.

Guides

Starting points for this utility

.json

Web