Upload simplifies file uploading for websites and apps.
Upload vs Cloudinary opinions
Upload is very modern by comparison. Cloudinary has more features for video encoding, but Upload has more developer / power-user features, e.g. for limiting upload rate and traffic.
We've been using Cloudinary for some time. It's fine, but it feels a bit dated (as the other comments have said). We looked around for alternatives last month: came across Filestack and Upload. Filestack was similar to Cloudinary. Upload looked nice and fresh. We've stuck with it for the last few weeks, no complaints yet. Biggest pro for us is the very quick customer support: Upload created a Slack channel for us, and helped with all the integration into our site's iOS app.
Blitline is the most affordable SaaS solution for software and media companies that have a content or digital asset management system and need secure image and media processing at scale for their applications, platforms, and websites.