Image Format and MIME Detector
Image Format and MIME Detector reveals what an image file actually is, even when the extension is wrong.
- No login
- Free to use
- Processes locally
- No files uploaded
Try the Image Format and MIME Detector
Processed locally in your browser
Your input and generated output are processed locally and are not sent to our servers for tool execution.
Examples
Sample input for Image Format and MIME Detector
Paste a realistic sample here and run the tool.
Processed output appears after you run the primary action.
Features
- Runs entirely in your browser
- No login or server upload
- Open local files privately
- Copy or download results instantly
How to use Image Format and MIME Detector
- Open a local file.
- Run Detect Image Format.
- Read MIME, signature hex, and likely extension.
Use cases
- Fix mislabeled uploads
- Validate CDN image types
- Debug ‘invalid image’ API errors
Technical reference
| Property | Supported |
|---|---|
| Input | Local image files / text (Base64, Data URI) |
| Output | Converted image, archive note, or detection report |
| Processing | Client-side only |
Common errors & troubleshooting
Unsupported format in this browser
Cause: Codec support varies by browser and OS.
Fix: Check the on-page limitation note and try a widely supported format pair (PNG/JPG/WebP).
Privacy and security
- Your input and generated output are processed locally and are not sent to our servers for tool execution.
- Opening a local file uses the browser File API; the file is not uploaded to UtilityKit.
- We may collect anonymous product analytics (for example page views). Tool contents are not included in those events.
- Output quality and codec support depend on your browser’s Canvas and image APIs.
- Very large images may be limited by device memory.
Frequently asked questions
What is Image Format and MIME Detector?
Image Format and MIME Detector reveals what an image file actually is, even when the extension is wrong.
Is my image uploaded?
No. Files stay on your device and are processed locally — they are not uploaded for tool execution.
Can I use Image Format and MIME Detector without an account?
Yes. No login is required.
Next steps after Image Format and MIME Detector
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