JPEG is a file format commonly used in graphics as a method of lossy compression of the photo file. Vector files are defined by commonly used mathematical shapes, such as rectangle, circle and triangles and use them to form the image trace. The main difference between a jpeg and a vector image file is that a jpeg image gets pixelated or blurry when zoomed in whereas a vector image doesn't. There are many methods of converting a jpeg to a vector file.
Open up your Internet browser on your computer.
Visit VectorMagic (see Resources.)
Click on the "Upload Image to Trace" button on the newly opened webpage.
Browse to the folder where your JPEG is located on your computer, select that file and click "Open".
Check the preview image of the converted file (on the right side.) If this seems correct, then click on the "Download Result" button at the top right of the page to download your converted Vector file.
Download and install the Adobe Illustrator CS5 trial (see Resources.)
Open up Adobe Illustrator and import the JPEG file you are trying to convert by using the "Open" file button from the toolbar.
Click the "Auto Trace" feature from the toolbar to auto-trace your JPEG image.
Click the "Expand" button on the control palette when the desired trace results are generated. The image will be converted to a vector file.
Download and install the free Inkscape software (see Resources.)
Open up Inkscape and import the jpeg file you are trying to convert using the "Open" file button from the main toolbar.
Click "Shift+Alt+B" to trace the JPEG image.
Press "Ctrl+L" on the keyboard to simplify the output path of the trace (reduce the number of nodes.) The output result will be a Vector file.