Backblaze B2

Backblaze B2 is a cost-effective object storage platform with an S3-compatible API. AeroFTP includes a built-in Backblaze B2 preset that simplifies endpoint setup.

Why Use AeroFTP with Backblaze B2

• Easy S3-compatible setup from a desktop GUI
• Saved profiles for recurring backup or transfer workflows
• Bucket browsing, uploads, downloads, and sync-friendly behavior
• One client for B2, S3, R2, Wasabi, and other providers

What You Need

• your B2 keyID
• your applicationKey
• your bucket name
• the S3 endpoint shown in the Backblaze dashboard

How to Connect

1. Open AeroFTP.
2. Select Backblaze B2 from the S3 provider presets.
3. Enter your keyID in the access key field.
4. Enter your applicationKey in the secret key field.
5. Enter your bucket name.
6. Confirm the endpoint shown by the preset or replace it with the endpoint from the Backblaze dashboard if needed.
7. Connect and save the profile.

Recommended Defaults

• protocol: S3-compatible
• use the Backblaze B2 preset instead of generic S3
• keep the endpoint aligned to the dashboard-provided S3 region endpoint

Common Issues

Problem	Cause	Solution
Signature error	Wrong endpoint or secret key	Verify the exact S3 endpoint and application key
Access denied	Wrong key permissions	Ensure the B2 application key can access the target bucket
Bucket not found	Wrong bucket name	Check the exact bucket name in Backblaze B2

Related Documentation

• S3-Compatible Storage
• Provider Reference