Cloudflare R2
S3-compatible storage with zero egress fees
Backblaze B2
Backblaze B2 is low-cost S3-compatible object storage; egress is free up to three times your stored data each month, and free to Cloudflare/Bunny via the Bandwidth Alliance — a popular S3 alternative for backups and media.
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Backblaze B2 is a low-cost, S3-compatible object storage service used widely for backups, archives and media. Its standout is cheap per-GB storage combined with generous free egress, including free transfer to Bandwidth Alliance partners such as Cloudflare and Bunny.
Key features
- S3-compatible API plus a native B2 API
- Free egress up to 3x stored data per month
- Free egress to Bandwidth Alliance partners (Cloudflare, Bunny)
- Simple, low per-GB storage pricing
Specs
| Category | Object storage |
|---|---|
| Pricing model | usage-based |
| Free tier | Yes — First 10 GB of storage free; egress free up to 3x your stored data per month (and free to Bandwidth Alliance partners like Cloudflare/Bunny). |
| Managed database | No |
| Regions | US + EU |
| Self-hostable | No |
| Docker-native | No |
| Git deploy | No |
| Open source | No |
Last reviewed 2026-07-16 — see our methodology. Specs, pricing and free tiers change often, so confirm current details on the provider before deciding.
Pros & cons
Our editorial assessment — not vendor-stated facts.
Pros
- Very low storage $/GB
- Generous or free egress for typical storage/download ratios
- Free to serve via Cloudflare/Bunny CDNs
- Simple, predictable pricing
Cons
- Fewer advanced features and regions than S3
- Egress beyond the 3x allowance is billed per GB
- Not aimed at ultra-low-latency hot serving on its own
Pricing
Usage-based: roughly $0.006/GB-month of storage; egress is free up to three times your stored data each month and free to Bandwidth Alliance partners, with a per-GB charge beyond that. The first 10 GB of storage is free. Pairs cheaply with a CDN for public serving.
Who should use Backblaze B2?
Cost-sensitive backups, archives and media libraries — especially when paired with Cloudflare or Bunny for free egress.
Frequently asked questions
- Does Backblaze B2 have a free tier?
- Yes. First 10 GB of storage free; egress free up to 3x your stored data per month (and free to Bandwidth Alliance partners like Cloudflare/Bunny).
- How much does Backblaze B2 cost?
- Usage-based: roughly $0.006/GB-month of storage; egress is free up to three times your stored data each month and free to Bandwidth Alliance partners, with a per-GB charge beyond that. The first 10 GB of storage is free. Pairs cheaply with a CDN for public serving.
- Who should use Backblaze B2?
- Cost-sensitive backups, archives and media libraries — especially when paired with Cloudflare or Bunny for free egress.
Backblaze B2 alternatives
Wasabi
Flat-rate hot storage, no egress or API fees
Bunny Storage
Edge storage paired with a cheap CDN
Amazon S3
The industry standard — with egress fees
DigitalOcean Spaces
S3-compatible storage bundled with a CDN
See all Backblaze B2 alternatives →
Backblaze B2 pricing → · Free tier → · Compare all → · Estimate cost →