Images of the UDG candidates in the g band in flux levels. The black contour indicates the surface brightness level of μ_g = 27 mag arcsec⁻². In the lower left corner we show the R_e length. The field of view of all boxes is 1  ×  1 arcmin (∼14.9 kpc). The black arrow in the image of UDG 4 and UDG 6 indicates the tidal features described in the text. The area that was masked due to contaminating stars is shown as white (circular) background. Below each image we plot the g − r colour profile of the relative UDG.