I have had a suggestion that I do a website audit through Lighthouse and it has highlighted some things I have not been doing so well, some are relatively easy to to fix but some I just need a wee bit of guidence with please:

1.  <frame> or <iframe> elements do not have a title? I have a weather map for the area in the footer of the page with the following code -
   
   <iframe width="420" height="380" src="https://embed.windy.com/embed2.html?lat=-44.894&lon=168.385&detailLat=-44.850&detailLon=168.390&width=650&height=450&zoom=11&level=surface&overlay=wind&product=ecmwf&menu=&message=&marker=&calendar=now&pressure=&type=map&location=coordinates&detail=true&metricWind=default&metricTemp=default&radarRange=-1" frameborder="0"></iframe>
   
   My question is how do I add a title to it like "Weather conditions in Glenorchy NZ" please?
   
   
2. Image Optimization/Compression. As can be seen by the attached image  I have left this as "None" on the website settings should this be  say medium to reduce the image file size or will this also effect the actual width and height of the image on the site.
   
   Should the boxes for Enable file minification and Enable gzip compression be ticked?
   
   If these areas are changed now will they effect the viewing of the current website as it is now?

Look forward to your suggestions.

Cheers Ross