imgix

imgix is a hosted image processing and delivery service. It doesn't replace your storage: you connect a "source" such as an Amazon S3, Google Cloud Storage, Azure, Cloudflare R2, DigitalOcean or other S3-compatible bucket, or an existing website folder, and imgix fetches the originals, transforms them on request and serves them from its CDN.

Each source gets a base URL on <subdomain>.imgix.net, or a custom domain. You change an image by adding query parameters to its URL (w, h, fit, crop and many more), and auto=format,compress serves AVIF or WebP to browsers that support them. There are official libraries for JavaScript, React, Gatsby, Python and other languages that build these URLs and responsive srcset attributes, and a Management API for purging and managing assets.

A small team gets on-the-fly resizing and format conversion without running an image pipeline, a CDN cache with long default lifetimes, signed URLs to protect sources, and paid AI features such as background removal and upscaling. Billing is in prepaid monthly credits that cover cached storage, bandwidth and renders.

There is no free plan, only a 30-day trial with 100 credits. Inputs are best kept under 100 MB (500 MB is a soft limit), output is capped at 8192 by 8192 pixels, the Web Proxy source type is Enterprise-only, and the Starter plan includes no SSL certificate for a custom domain.