Mime-type: image/png

PNG is a new and very versatile image format, it allows for both lossy and losses encodings, and is a completely open standard. (unlike GIF) Mozilla and other modern browsers can show PNG images without a plugin so PNG support is not enabled by defaulit in plugger. However, most browsers still can't display a PNG using the <embed> tag.

Click here to test this mime-type in the entire frame