WordPress media on Backblaze B2
S3-compatible object storage at $6 per TB per month, with free egress to Cloudflare and Fastly via the Bandwidth Alliance. One of the lowest-cost options for serving media globally.
Proven storage at the lowest cost. Free egress with Cloudflare.
WP Media Cloud connects to Backblaze B2 using the S3-compatible API. Same straightforward setup, but with storage costs 75% lower than Amazon S3 and free egress when paired with Cloudflare CDN.
Automatic offload on upload
Every file uploaded to WordPress is pushed to your B2 bucket immediately. The CDN URL is written back to WordPress before the upload dialog closes. No manual steps needed for new content.
Free egress via Bandwidth Alliance
Backblaze B2 is a founding member of the Cloudflare Bandwidth Alliance. Egress from B2 to Cloudflare CDN is completely free regardless of volume. You pay only for storage, never for delivery through Cloudflare.
S3-compatible API
Backblaze B2 supports the S3-compatible API alongside its native API. WP Media Cloud uses the S3-compatible endpoint so setup is identical to Amazon S3 with just a different endpoint URL and credentials.
Pair with Cloudflare or any CDN
Point a Cloudflare CDN zone at your B2 bucket as origin for zero-egress delivery. Alternatively use Bunny CDN, KeyCDN, or any other pull zone CDN. Enter your CDN hostname in WP Media Cloud settings and all URLs rewrite automatically.
All image sizes offloaded
WordPress generates multiple image sizes for every upload. WP Media Cloud pushes all registered sizes to B2, not just the original. Thumbnails, medium, large, and all custom sizes are included automatically.
Remove local files after offload
Optionally delete local copies after offloading to B2 to free up server disk space. The Download Media tool can pull files back from B2 at any time if you need to switch providers or deactivate.
Free egress to Cloudflare. That changes the cost model entirely.
The Cloudflare Bandwidth Alliance is an agreement between Backblaze and Cloudflare to waive egress fees when data moves between their networks. When you use Cloudflare as your CDN with a B2 bucket as origin, Backblaze does not charge for data leaving B2 to Cloudflare. Cloudflare does not charge for pulling from B2 origin.
For a media-heavy WordPress site serving hundreds of gigabytes per month, this arrangement eliminates what would otherwise be the largest line item on your storage bill. You pay only $6 per TB stored and nothing for delivery through Cloudflare's global network.
- Zero egress fees from B2 to Cloudflare CDN edge
- Cloudflare has 300+ edge locations in 100+ countries
- Free egress also applies to Fastly via the Alliance
- Standard B2 egress rates apply to other CDNs and direct downloads
- No configuration needed beyond pointing Cloudflare at your B2 bucket
Monthly cost estimate: 100 GB stored, 500 GB delivered
$6 per TB. 10 GB free. 1 GB free egress per day.
Backblaze B2 charges $6 per TB per month (approximately $0.006 per GB). The first 10 GB of storage is permanently free. Egress to the public internet costs $0.01 per GB, but egress to Cloudflare CDN and Fastly is completely free via the Bandwidth Alliance.
For most WordPress sites pairing B2 with Cloudflare, the monthly bill is storage cost only. A site with 100 GB of media and unlimited traffic through Cloudflare pays approximately $0.60 per month total, with nothing charged for delivery regardless of how many visitors download your files.
View Backblaze B2 pricingConnected in minutes using your B2 credentials
Backblaze B2 supports the S3-compatible API. Create a bucket and an application key in the B2 console and WP Media Cloud handles the rest.
Install WP Media Cloud
Install and activate the plugin on your WordPress site. Open the setup wizard from the WP Media Cloud menu.
Create a bucket and application key
In the Backblaze console, create a B2 bucket and set it to public or private access. Then create an application key with read and write access to that bucket. Copy the key ID and application key.
Enter credentials and CDN URL
Select Backblaze B2 in WP Media Cloud settings. Enter your key ID, application key, and bucket name. If using Cloudflare CDN, enter your Cloudflare hostname as the CDN URL. Run the health check to confirm.
Media goes to B2 instantly
Every new upload goes straight to your B2 bucket. Run the bulk offload tool to migrate your existing media library in the background at any time.
Use Cloudflare and pay nothing for delivery.
Backblaze B2 does not include a built-in CDN, but it has something better for many sites: free egress to Cloudflare through the Bandwidth Alliance. Point a Cloudflare CDN zone at your B2 bucket as origin and all media is delivered through Cloudflare's 300+ edge locations globally at zero egress cost.
To set this up, create a Cloudflare zone for a subdomain (e.g. cdn.yoursite.com), add a CNAME pointing at your B2 bucket endpoint, enable Cloudflare proxy, and enter the subdomain as your CDN URL in WP Media Cloud. All media URLs on your site rewrite to it automatically.
WooCommerce downloadable products on Backblaze B2 are served via standard CDN URLs. Secure signed downloads are available with Bunny.net (Token Auth) and Cloudflare R2 (SigV4) only.
Backblaze B2 + your existing stack
WP Media Cloud with Backblaze B2 works alongside every major page builder, image optimizer, and plugin integration from day one.
Start offloading to Backblaze B2 today
All features included on every plan. 30-day money-back guarantee. No upload limits.
