Your sponsor logos can be displayed on the footer of your event website. In order for them to look uniform, you may want to size them all to 200 pixels width by 250 pixels height. 

In order to do so, you need a photo editing program, such as Paint or Adobe Photoshop Elements.

If using Microsoft Paint:

Open the image. The size of the image in pixels and KB will be listed on the bottom toolbar.

Select the Resize tool. You can increase or reduce the size of the image by percentage or pixels. We recommend you click the checkbox "Maintain Aspect Ratio" so the image does not become distorted

Then, save the logo as a .jpg

If using Adobe Photoshop Elements:

Open the image in the program.

Under the Image tab, select Resize, and then Image Size. Make sure the Constrain Proportions checkbox is clicked so the image doesn't become distorted. Enter the width and height and click OK.

If you'd like to make the image background larger, you can update the Canvas Size, which is under the Image tab, and Resize selection once again.

Finally, save the logo as a .jpg. 

Once your image is resized, you can follow the steps here to upload it to your event website.