Assessment required for Mozilla splash page

In this project I have written the codes following the guidelines of the assessment
So far I am comfortable applying the adequate codes
HOWEVER AS YOU CAN SEE WHEN I changed THE WIDTH OF THE IMAGES SOME OF THEM WITH A WIDTH OF 120W CAME OUT
WITH LOW QUALITY
I was using IMG2GO HERE IS THE LINK https://www.img2go.com/

I would love some suggestions

I would love to have some suggestions on free editor program I could use to improve the quality of the media files

The low quality can be the result of a bad compression during the saving process. Try a different tool to save them. I use Squoosh to resize and save the image even in webp format.

Hey Manuel,
Thanks again for the Tip🙏.