Cloudflare R2
Key idea:
Cloudflare R2 — S3-compatible object storage with zero egress fees (AWS S3 charges ~$0.09/GB outbound). Storage price: $0.015/GB/mo. Access: S3 API (aws-cli, rclone, boto3 work unchanged). Integrations: Workers for on-the-fly image transforms, Hyperdrive for DB caching. Used by: Shopify, Notion, Superhuman.
Below: details, example, related terms, FAQ.
Details
- S3 API 100 % compatible: aws-cli, boto3, rclone, mc — no changes
- Pricing: $0.015/GB storage, $0 egress, $4.50 per million Class A operations (PUT/POST/LIST)
- Custom domain + HTTP/3: attach an R2 bucket to your own domain directly
- Workers integration: fetch() an R2 object → transform → return — zero network hop
- Multipart upload up to 5 TB/object, 11 9's regional durability
Example
# aws-cli config for R2
$ aws configure --profile r2
AWS Access Key ID: <R2_KEY>
AWS Secret: <R2_SECRET>
Default region: auto
# Upload
$ aws s3 cp file.zip s3://my-bucket/ \
--endpoint-url https://<ACCOUNT>.r2.cloudflarestorage.com \
--profile r2Related
Understanding Cloudflare R2's Pricing Model
Integrating Cloudflare R2 with Existing Applications
Key Features of Cloudflare R2
Learn more
Frequently Asked Questions
When is R2 cheaper than S3?
When egress > 10 % of storage cost (image hosting, video, static sites). For rarely-read archival — S3 Glacier is cheaper.
Minimum retention?
None. Unlike S3 Glacier, deletion is free and instant.
Do I need Workers?
No, R2 works standalone via S3 API. Workers are a bonus for transforms/caching.
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