ImageKit.io
Real-time image and video CDN with URL-based transformations, optimization, and an integrated media library (DAM).
Use Cases
Free Tier
Forever free: 20GB bandwidth/month, 3GB DAM storage, 500 video units, 650 AI extension units, 2 users
How to Maximize the Free Tier
ImageKit's free plan is one of the most generous image CDNs: 20GB monthly bandwidth (~1M image deliveries) and 3GB storage (~10K files) reset each calendar month. Watch the 650 AI extension units — each background removal or AI tag costs units, so use them sparingly. Transformations (resize, crop, format conversion) are unlimited and NOT billed to storage, so lean on URL params like ?tr=w-400 for every variant instead of pre-generating files. Cache transformed URLs at your origin/CDN to avoid repeat processing, and combine with Cloudflare R2 for long-term origin storage while ImageKit handles delivery and optimization. Media delivery hard-stops when you hit the 20GB bandwidth cap, so set up usage alerts in the dashboard before launch.
Getting Started
1) Sign up at imagekit.io (email or GitHub). 2) Create a Media Library and copy your URL endpoint (https://ik.imagekit.io/yourid). 3) Upload images via dashboard or API. 4) Transform by appending params: ?tr=w-400,h-300,f-webp,q-75. 5) Point your app's <img> src to the endpoint URL. 6) Optionally connect external storage (S3/R2) as origin.
Pros
- URL transformations: Resize, crop, compress, and convert formats via query parameters — no backend image processing code needed
- Unlimited transforms: Transformations don't count against storage or bandwidth quotas, only delivery bandwidth does
- Generous free plan: 20GB monthly bandwidth and 3GB storage free forever — enough for ~1M image deliveries per month
Cons
- Hard bandwidth cap: Media delivery stops when you hit 20GB/month — no automatic overage on the free plan, a viral post can kill images
- AI features metered: AI extensions (background removal, tagging) are limited to 650 units/month and stop working when exhausted
- 2-user limit: Free plan allows only 2 user logins, which is tight for teams that need separate admin accounts