360 image on sphere

Greetings… I have been following a tutorial on how to transfer 360 images taken with a smartphone, and creat a sphere. So far so good…. While working in blend4web the image is crustal clear, but once I export it to html, the image goes blurry and slightly out of focus, even if I use a hi-res image of up to 5mb… I'm guessing I am missing a render setting, but these are not available while using the blend4web engine. Any ideas…? Thanks in advance…. blend file attached…

Hello!

You havn't packed your texture into blend-file "sphere1 med lrg flipped.jpg".
File->External Data-> Pack All Into .blend

I learn something new everyday, awesome…. It is now done, thanks for the response, updated blend attached

In Google Chrome you can see the file exported to html very well ..