Image Format Detector
Use Image Format Detector on AboveTool for image resize, crop, filters, palettes, OCR, and more — private canvas processing, no signup.
Image Format Detector
sniffs image format from magic bytes
Drop your image here
or click to browse — processed locally
No images added yet.
Preview
Result preview
Details
mismatched extension vs magic bytes is a red flag
About Image Format Detector
Image Format Detector is sniffs image format from magic bytes. Reads the file header and compares to known signatures. Mismatched extension vs magic bytes is a red flag. Image Format Detector runs free in your browser at abovetool.com — no signup required.
How to use
- Upload an image (or paste Base64 / pick a color for text-only modes).
- Adjust the tool-specific options such as size, filter, or palette settings.
- Click Run to preview, then copy or download the result — all in your browser.
Features
- Mode-specific controls for resize, crop, filters, palettes, and more
- Canvas processing stays on your device
- ZIP packs for favicons, icons, and grid tiles when needed
- OCR via Tesseract.js for image-to-text tools
Frequently asked questions
Is Image Format Detector free on AboveTool?
Yes. Image Format Detector is free to use on abovetool.com with no account required.
Are my files uploaded to a server?
Most tools on AboveTool process files locally in your browser. Your content stays on your device.
Who is this Image tool for?
Anyone who needs quick Utilities tasks without installing desktop software — students, developers, designers, and office teams.