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Object storage

Cloudflare R2

Cloudflare object storage with documented S3 API compatibility and a direct-egress cost model designed for its network.

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Editorial verdict

Choose R2 when Cloudflare delivery and direct-egress economics are central and the application can validate every required S3 operation against R2's compatibility matrix.345

Best for

  • Cloudflare-centered applications serving stored objects through the same network
  • Workloads where direct object-delivery transfer charges dominate storage-provider selection
  • Teams using a verified subset of S3-compatible clients and operations
345

Not ideal for

  • Systems that require unverified S3 features, integrations, or exact behavior
  • Workloads whose primary requirement is deep AWS-native service integration
  • Products expecting object storage alone to solve upload authorization and application callbacks
345
Main trade-off

R2 can simplify Cloudflare delivery and transfer economics, but teams must treat compatibility, operations, and ecosystem breadth as explicit validation work.345

Product boundary

Whether R2's Cloudflare integration and transfer economics outweigh gaps from full Amazon S3 parity.

R2 is object storage. Its S3-compatible API is a documented compatibility layer, not a claim of complete S3 service or behavioral parity, and it is not a finished end-user upload workflow.34

For: Teams delivering objects through Cloudflare or seeking an S3-compatible object store with a different egress shape

  • A required client operation or integration is absent from R2's compatibility matrix.
  • The delivery architecture is already committed to Cloudflare Workers and Cloudflare caching.
  • Data residency, jurisdiction, or support terms require a provider-specific review.

Why teams consider Cloudflare R2

  • Cloudflare delivery fitR2 is designed to connect with Cloudflare's network and developer platform.34
  • S3-compatible accessA documented S3 API subset supports familiar clients when the required operations are compatible.34
  • Distinct transfer modelThe public pricing model separates storage and operations and documents no direct R2 egress charge.34

Pricing

R2 publishes storage, Class A and Class B operation, retrieval, and related service dimensions. The no-direct-egress statement does not eliminate every possible network, transformation, request, or adjacent Cloudflare charge.5

Workload estimate

Usage based

Estimate storage class, operation classes, retrieval, and any adjacent delivery or processing services.5

Primary meters
Storage, operations, and retrieval dimensions5
Compatibility gate
Required S3 operations must be checked against the published compatibility page5
Pricing checked View official pricing

Cloudflare R2 vs alternatives

Amazon S3

Choose when
Choose S3 when AWS-native integration, regional options, and storage-control breadth are more important.
Compared with Cloudflare R2
The pricing and policy surface is more complex.12

Supabase Storage

Choose when
Choose it when storage authorization should share Supabase Auth and Postgres RLS context.
Compared with Cloudflare R2
The solution is more tightly coupled to the Supabase project.67

Backblaze B2

Choose when
Choose B2 for a cost-focused S3-compatible object store without making Cloudflare the application platform.
Compared with Cloudflare R2
Its native platform and regional breadth are narrower than hyperscalers.910

Resources and sources

Official product and pricing

  • Cloudflare R2 documentation
    Open
  • R2 S3 API compatibility
    Open
  • Cloudflare R2 pricing
    Open

Related tasks

  1. 1
    Amazon S3 User Guide

    Amazon Web Services · Accessed Official

  2. 2
    Amazon S3 pricing

    Amazon Web Services · Accessed Official

  3. 3
    Cloudflare R2 documentation

    Cloudflare · Accessed Official

  4. 4
    R2 S3 API compatibility

    Cloudflare · Accessed Official

  5. 5
    Cloudflare R2 pricing

    Cloudflare · Accessed Official

  6. 6
    Supabase Storage documentation

    Supabase · Accessed Official

  7. 7
    Supabase Storage access control

    Supabase · Accessed Official

  8. 8
    Supabase Storage pricing

    Supabase · Accessed Official

  9. 9
    Backblaze B2 documentation

    Backblaze · Accessed Official

  10. 10
    Backblaze B2 pricing

    Backblaze · Accessed Official