About the Image Format Detector
A file called photo.jpg might really be a WebP, HEIC or PNG — which is why it won’t open or upload. This detector reads the file’s actual content to tell you its true format, dimensions, colour space and other technical details.
How to Use the Image Format Detector
- Click the upload box and choose your file, or simply drag and drop it in.
- Adjust the available options to match what you need.
- Click the action button and let House of Convert do the work in seconds.
- Download your result instantly — no email, no account, no watermark.
Why Use the Image Format Detector at House of Convert?
- Free forever — every tool on this site is free to use, with no hidden limits.
- Private by design — your file is processed for this request only and never stored on our servers.
- Fast — results are usually ready in a few seconds, even for larger files.
- No installation — works entirely in your browser, on desktop or mobile.
Frequently Asked Questions
How do I find out what format an image really is?
Upload it here; the true format is read from the file’s content, not its name.
Why won’t my .jpg file open?
It may actually be WebP, HEIC or AVIF with the wrong extension. Detect the real format, then convert it.
Can a file have the wrong extension?
Yes. Renaming a file doesn’t change its content, and some websites serve WebP with a .jpg name.
What information does the detector show?
The real format, width and height, colour space, whether it has transparency, and the file size.
What is a colour space?
It defines how colours are stored — sRGB for screens, CMYK for printing. CMYK images can look wrong on websites.
How do I fix a wrong extension?
Convert the file to the format you need with the Universal Image Converter.
Can it detect HEIC and AVIF?
Yes, along with JPG, PNG, WebP, GIF, TIFF and SVG.
Does it check whether an image is corrupted?
If the file can’t be decoded you’ll see an error, which suggests damage.
Does it change my file?
No, it only reads it.
Does the Image Format Detector store my file?
No, it’s discarded immediately.