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Cloudflare Docs

Overview
Get started
Data Migration
Buckets
Create new buckets
Public buckets
Configure CORS
Data location
Object lifecycles
Objects
Multipart upload
Upload objects
Download objects
Delete objects
API
S3

S3 API compatibility
Authentication
Extensions
Presigned URLs

Workers API

Use R2 from Workers
Use the R2 multipart API from Workers
Workers API reference
Examples
AWS

aws CLI
aws-sdk-go
aws-sdk-js
aws-sdk-js-v3
aws-sdk-net
aws-sdk-php
aws-sdk-ruby
aws4fetch
boto3
Configure custom headers

Expose an R2 bucket to the Internet via a Worker
Mastodon
Postman
rclone
Terraform
Terraform (AWS)
Use the Cache API
Reference
Storage Options guide
Audit Logs
Changelog
Consistency model
Data security
Limits
Unicode interoperability
Pricing

Reference