Yes. To alter the size of the images in your homepage simply click in the picture. A new menu in the sidebar to the left will appear under “Contents”. From here you can align, resize, rotate or flip your image. To resize simply type the desired pixel value in the boxes behind “Scale”. The aspect ratio is automatically maintained, this means that if you change a value, the value of others will also be changed automatically, hence no distortion to the picture will occur.
Click on the green tick to confirm the new size of your image.
Images are compressed to increase the speed of transfer between server and computer, therefore only increase the size of an image when its original size is large enough otherwise pixilation will occur.