Image Format Checker
Identify the image type your browser reads and inspect its basic properties.
or click to choose a file
When this tool is useful
Identify the image type your browser reads and inspect its basic properties. The right choice depends on what is actually wrong with the image. If the dimensions are correct but the file is too heavy, start with compression. If the image is physically larger than the destination needs, resizing can remove unnecessary pixels. If another system requires a different file type, conversion is the appropriate step.
How it works
The core operation runs in your browser using the selected file and the browser's image and Canvas capabilities. The generated result is offered as a local download. This design is intended to avoid a server-side image upload for the core operation.
Common questions
Why does the file extension matter?
Software often uses the extension as a hint about the format. The actual MIME type and encoded image data are more useful when diagnosing compatibility.
Can I check an image without uploading it?
Yes. The tool reads the selected file in your browser for the core check.
What should I do after identifying the format?
Use the result to decide whether you need compression, resizing or conversion. The correct next step depends on the actual problem.