Pixelated or Uneven Images
If you have blurry images or issues with their formatting, follow these steps to regenerate properly sized thumbnails. Go to Plugins > Add new and search for Regenerate Thumbnails. Install and activate the first one that comes up.
Go to Media > Library and select all the images. From the drop-down menu, select Regenerate Thumbnails and click Apply.
If the resizing is successful, the images should now display properly on the home page.