I found a site where you can supposedly read every Simpsons comic online

https://www.comicextra.com/simpsons-comics/issue-4/full

I have the first six volumes of the Simpsons Comic Compendium.

https://www.amazon.com/Simpsons-Comics-Colossal-Compendium-1/dp/0062267752/ref=asc_df_0062267752/?tag=hyprod-20&linkCode=df0&hvadid=312132071501&hvpos=&hvnetw=g&hvrand=5155756077174676175&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9012270&hvtargid=pla-434924120341&psc=1

My question is are the comics from comicextra.com the same ones that can be found in the Collossal Compendium books?

Anyone?