IrfanView-wrong-file-type.gif

<div>
<div class="content wysiwyg-content">
I received an image in an email but it has no extension. &nbsp;<br />
How can I determine what type of image file type this is?<br />
<br />
There's gotta be a way of determining this.<br />
<br />
I tried adding a JPG as an extension and it opened fine<br />
I tried adding a PNG extension and it opened fine. &nbsp;It can't be both!
</div>
</div>


I received an image in an email but it has no extension.  
How can I determine what type of image file type this is?

There's gotta be a way of determining this.

I tried adding a JPG as an extension and it opened fine
I tried adding a PNG extension and it opened fine.  It can't be both!

Received a image file in an email with no extension.

Websites use graphics to enhance information, assist navigation, and generally improve the user’s experience. To create those graphics, developers use any number of programs, like the Adobe Creative Suite (Photoshop and Flash have their own topics), the CorelDraw suite, Xara, Gimp, ACDSee, Serif, ULead and others.

Web Graphics Software

Photo and imaging software is used to edit and compose raster images; Adobe Photoshop, which dominates the market, has its own topic. Common actions include cropping, slicing, retouching, color replacement, masking and erasing. Other programs include Apple Photo, Corel PaintShop Pro, GIMP, Serif PhotoPlus, Pixlr, PhotoScape, Picasa and IrfanView.