Media Processing APIs & SDKs
imgix
Image Caching, management and CDN. Free plan includes 1000 origin images, infinite transformations and 100 GB bandwidth
ImageKit
Automate image optimization, transformation, and delivery
Cloudinary
Optimize, create, manage, and deliver images and videos
Dyte
The most developer-friendly live video & audio SDK, featuring collaborative plugins to enhance productivity and engagement. The free tier includes monthly 10,000 minutes of live video/audio usage
APITemplate.io
Auto-generate images and PDF documents with a simple API or automation tools like Zapier & Airtable. No CSS/HTML is required. The free plan comes with 50 images/month and three templates
Pintura
A fully configurable JavaScript image editor SDK
Bytescale
File storage and processing APIs
Mux
APIs to upload, manage, and stream video. 
Flatfile
Programmatically import data from files so it's API-ready. 