Here is a little bug that prevents text/images from displaying in some browsers. Fixing images by reuploading files without accents, but the text still doesn't work.
Screenshot – Safari Version 9.1.3 (11601.7.8)
Original filename is converted properly but still creates problem.
Also text isn't displaying properly
On this page: http://www.anneslacik.com/livres-peints-a-c
The image path contains the accent but in WP the accents are removed:
Images show up as error in some browsers. (works fine in Chrome however)