How to Configure Cloudflare R2

Overview

Cloudflare R2 is an S3-compatible object storage service with no egress fees, making it an excellent choice for hosting ShareX uploads. It combines affordable storage with Cloudflare's global CDN for fast delivery.

Prerequisites

• A Cloudflare account
• R2 enabled in your Cloudflare dashboard
• A bucket created for ShareX uploads
• API tokens with R2 read/write permissions

Setting Up R2 in ShareX

Step 1: Create R2 Credentials

1. Go to Cloudflare Dashboard > R2
2. Click Manage R2 API Tokens
3. Create a new API token with Object Read & Write permissions
4. Save the Access Key ID and Secret Access Key

Step 2: Get Your Endpoint

1. In the R2 dashboard, note your Account ID
2. Your S3 endpoint will be: https://.r2.cloudflarestorage.com

Step 3: Configure ShareX

1. Open ShareX
2. Go to Destinations > File uploaders > Amazon S3
3. Fill in:
   • Access Key ID: Your R2 Access Key ID
   • Secret Access Key: Your R2 Secret Access Key
   • Endpoint: https://.r2.cloudflarestorage.com
   • Region: auto
   • Bucket name: Your R2 bucket name
   • Upload path: e.g., sharex/%y/%mo/
   • URL: Your public bucket URL (or custom domain)

Step 4: Set Up Public Access

To make files publicly accessible:

1. In Cloudflare R2 dashboard, select your bucket
2. Go to Settings > Public access
3. Enable public access and note the public URL
4. (Optional) Connect a custom domain for shorter, branded URLs

Uploading to R2

1. Set Amazon S3 as your default file uploader in ShareX
2. Take a screenshot — it uploads to R2 automatically
3. The URL is copied to your clipboard

Benefits of R2 Over Other Storage

• No egress fees: Download as much as you want at no cost
• S3-compatible API: Works with all S3 tools and libraries
• Global CDN: Fast content delivery worldwide
• Generous free tier: 10 GB storage free per month