A: Hi Sumo-ling,

Yes we optimize images based on screen size of the user.
I could not find many differences between Gumlet and Optimole. But there are following pros for choosing Gumlet:

- One key difference is that we offer 99.5% uptime SLA, Optimole doesn't offer any SLA.
- Gumlet can be integrated with any sites not just wordpress using out JS plugin.
- We are delivering more than 25 Million optimised images everyday. Their scale seems quite lower than that.

I hope this helps :)