Look closely around the red and yellow rectangles and just about and edge meeting the blue and you will see. Open all 3 and tab one to the next and you will notice the big difference.

upon first glance it looks like the lines are blurry in the jpeg.io one compared to the original and other two.

If you zoom in a bit that may still be the case, but it looks like the overall image quality is much better.

The photoshop export has significant artifacts visible, while the jpeg.io compressed image has far fewer visible artifacts. The tinypng version isn't jpeg compressed but shows dithering as you would expect from a GIF file.