Sorry for the huge filesize each image is an individual wallpaper. Is not only the same image resized some times...
Different sizes have different grids and rulers (yes, they have rulers, look at the left-side on the preview), and consequently, the filesize is bigger than normal images.
Each square on the grid measures 16x16px, and each divisor measures 128x128px.
If you have any questions, let me know it via comments. Enjoy!
Perdón por el error, este es el link correcto: [link]