Use the PNG Images it will solves the issue
Hope this helps kindly mark this answer as correct or helpful
Can you please share some screen shot of your icons and problems..?
All my images are saved in png format in the icons folder, not helping.
Naveen B is correct but there is one further step you need to take to convert the background to transparent .png. If you don't have the option to select the image with the transparent background already, you'll need an image editor such as Photoshop to cut and clear the background then save as a transparent .png. Once you pull the images in they will show as expected without the white background surrounding the shapes.
I hope this helps.