There's a number of images appearing in different parts of the app, ranging form small tiles to widescreen banners. To display them perfectly, please use the respective dimensions listed below.
Please note that different mobile devices may display images with slight differences in size or crop. It is thus advisable to center images, leaving a few px of margins around the picture. However, the change should not be more than a few px.
Homepage half-size tile: 490 x 255 px
Homepage screen-wide banner: 1000 x 420 px
Images in 'News' section: 1000 x 600 px
News image: 1000 x 600 px
including
Message image: 1000 x 600 px
Dashboard banner (carousel): 1000 x 600 px
Reward banner: 1000 x 600 px
Deal image: 1000 x 600 px
Coupon preview image (page with the list of all coupons): 630 x 530 px
Coupon preview ribbon: 90 px height (starting at 45 px from very top of the image)
Coupon detail: 680 x 320 px
Reward image: 500 x 500 px
Leaflet image: 700 x 1000 px
Contest image: 1000 x 420 px
Contes prize image: 500 x 500 px
