Uploadcare

Mario

Overall: Reduce development time, accelerating feature creation, plus having image processing save tons of backend code or installing image processing libraries. Perfect for large solution and ideal for small project, because the free plan is sensational.
Pros: - Easy to use - Free plan is way more than enough - Filters and image processing OMG! - Easy to customize, I'm using a custom button and upload views - Made thinking on the developers - No need for weird libraries or uglify your code - Documentation is clean and easy to follow - Large community when needed a little extra not in the docs
Cons: It is great overall, the only thing I dislike the most is the validations API, you have to include an estrange method to return errors and validation simple things you can do in the init section of the library, validations such as file type or file size limit should be easy as the implementation it self, you have to go an manually include those extra methods.

Fedor

"The best CDN for images"
Pros: It's super easy to upload images and make them available through on the Internet with lightning speed and transformation rules done through URL extension.
Cons: In public URLs it's not possible to use custom names instead of UUIDs assigned by Uploadcare.

Reece

"Takes away the hassle"
Overall: Painless.
Pros: If you need a quick and simple file/image attachment feature for your forms, this will do the job perfectly. It integrates seamlessely with your existing form and requires zero backend changes. Interface is very user friendly with very modest branding. I will be using this again whenever a project calls for it. The API is pretty good too.
Cons: Honestly, I can't think of anything. Perhaps the ability to change the button text, but there's a chance It already has that and I missed it.
Reasons for Choosing Uploadcare: Okay guys, you just asked me that! (Why did you make the switch?) - stop stroking your own ego, you know you did good! :D haha. thank you.
Reasons for Switching to Uploadcare: Lacked features Uploadcare provides.

Stephen

"Feature rich and easy to use"
Overall: Very good experience with the software and getting my specific questions answered by their support staff.
Pros: I found Uploadcare to be so easy to integrate with a client's Webflow landing page form. It also provides a nice and easy user experience, which is important for our lead generation.
Cons: So far I can't think of anything I did not like.

James

"Uploadcare is a great service to host your images at scale."
Overall: This service allowed us to remove paperclip and some issues we were having getting that to work reliably. It also removed the complexities around resizing and a dynamic way to upload images without us to having to implement them ourselves.
Pros: The ease of getting the solution integrated with our product, and the ability to serve up images at scale and allow us to resize on the fly have been a great improvement over "roll our own" solutions to hosting images for our customers.
Cons: Along they way there have been some small hiccups with the API and the javascript that drives the upload widget. The team at Uploadcare have, however, always been responsive to our concerns.