Rainboom Dash 
"[@JP":](/images/2600049#comment_3851090
)
my guess is it is in 4:4:4 subsampling and you are re-saving as 4:2:0 by doing that so TECHNICALLY not full res and doing below 100 quality while being able to keep 4:4:4 or 4:2:2 would have probably been better
since compression affects high resolution images drastically less
although, zooming way in I barely see any difference regardless so...
also no idea why the one on here is higher file size than downloading off of Deviantart by a few mb but I'm assuming it's the optimization that raised it.. sometimes that happens, I guess?
Rainbooms4Ever
my guess is it is in 4:4:4 subsampling and you are re-saving as 4:2:0 by doing that so TECHNICALLY not full res and doing below 100 quality while being able to keep 4:4:4 or 4:2:2 would have probably been better
although, zooming way in I barely see any difference regardless so...
also no idea why the one on here is higher file size than downloading off of Deviantart by a few mb but I'm assuming it's the optimization that raised it.. sometimes that happens, I guess?