You are downloading the Photo Marker XAP file v18.104.22.168 for Windows Phone. Photo Marker is a free and useful Photo & Video app: Windows Central:"Photo Marker is a simple and effective way to mark-up your images."A picture is worth a thousand words. Following this ... You can now download the offline XAP file to install & try it.
Download Locations for Photo Marker 22.214.171.124 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Photo Marker XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.