WordPress Speed Up Service | WordPress Website Maintenance Packages I am using Arrass wordpress theme for my blog, it has option to set the thumbnails size to display. I have set it to 140x140 pixels and also set 0 pixels in Media setting so that wordpress should not create any extra files with different sizes. It was all working fine but now I can see when I upload any file and set it as "Featured Image" in wordpress, the system automatically generate a new file with the same name and use that file as featured image. For example: For the latest blog post I set this image in wordpress as "Featured Image" http://www.inspirefusion.com/wp-content/uploads/baguetting.jpg But either wordpress or some plugin automatically generated this file and showing it on the blog http://www.inspirefusion.com/wp-content/uploads/baguetting-140x140.jpg It is the issue with every post's featured image. Can anyone please help me how to stop this thing?