The background behind Microsoft logo appears to be transparent when you save the image, but here’s what it actually looks like (black border added): Here’s how to prevent this from happening:

Get on Google Images on your web browserLook for something with transparency. Unfortunately, this doesn’t work on Google’s mobile site.Click the “Tools” button below the search bar.The toolbar will expand with a few additional options. Select the “Color” button.Choose “Transparent” from the drop-down menu.All the results will now be images with at least partial transparency.

Now, this photo is a truly transparent picture.

How to Remove Fake Transparent Images from Google Images - 21