What are the best image download automation practices

Are webp files the future?

What language is the easiest to pursue hacking up some image handling/scraping from my vendors?
(Currently have a script that pulls a vendor sku out of my easypopulate csv's and downloads them from my vendors website; but the png > jpg is getting streaky)

Any other suggestions?

webp still is not supported by browsers used by a lot of users.

As for scraping images from vendors, I see several issues:

1. Permission. Copyright. Have they given you permission to do this? If so, that same conversation of asking for permission could be had with their marketing department who actually has the originals of those images, and could simply supply them to you in high quality.
   Scraping issue solved.

And, if your counter-argument to this is that "I've tried that years ago", then maybe it's time to re-visit the conversation "today" and convince them of the value of collaborating with you.

2. If your existing scraping script is grabbing low-quality images but their website uses higher-quality images then perhaps you're not scraping the right files?

3. Why convert from png > jpg? If you're re-processing already-low-res images, you're going to end up with even lower quality images.

Thanks for the input, my industry's small. I would of course do this with permission.