File & conversion tools / Backblaze B2
Backblaze B2
Neoclouds, GenAI devs, and AI-forward builders rely on B2 Cloud Storage for high-throughput, data-heavy workloads. S3-compatible object storage without limits.
Where it stands
3.9 / 5
Signals score
Not a hands-on test
Based on 3 of 3 signals
- Website health4.3 / 5 · weight 50%
Measured from the tool's public website
- Facts stated4.2 / 5 · weight 30%
How many of the five facts the tool's own pages state
- Community3.6 / 5 · weight 20%
What people said in public discussions
Built only from what we can measure or quote without using the tool. How ranking works
Rank by signals
We have not run our own hands-on test on Backblaze B2 yet. Facts checked 2026-11-01. How tests work
Disclosure: agathox makes some of the tools listed here. They are labelled and scored by the same method as every other tool.
Should you use Backblaze B2?
A quick read built only from what the tool's own pages state and from our tests, not from opinion. Facts checked 2026-11-01.
A good fit if…
- You want a free option. It states: “The first 10 GB of storage is always free. Free egress up to 3x average monthly storage; overage is $0.01 per GB. Class A, B and C…”
Check first
- It sends your content to its servers. Its pages say: “Files you store are uploaded to Backblaze. The privacy notice covers account information, not stored file contents, and does not…”
- The free option has limits: “The first 10 GB of storage is always free. Free egress up to 3x average monthly storage; overage is $0.01 per GB. Class A, B and C…”
- Its pages do not state: signup, watermark. Check on the tool's site before you rely on it.
Does: Cloud storage
Measured signals
4.3 / 5 · measured 2026-11-08Read automatically from Backblaze B2's public website: how reliable, secure, private and open the site is. This is not a test of how well the tool does its job. How this is measured
- Reliability5 / 5The page answered and finished downloading in 73 ms.
- Security4.3 / 53 of 5 protective headers set (strict-transport-security, content-security-policy, x-frame-options).
- Privacy3 / 52 third-party tracking services found: Google Tag Manager, HubSpot.
- Transparency5 / 5Links a privacy policy; links a pricing page.
Community feedback
3.6 / 5 · 17 commenters76% of the 17 people whose comments we could classify were positive. Read automatically from public Hacker News threads about Backblaze B2; the classifier is simple and can misread sarcasm, so check the threads. How this works
- Positive
“Every major cloud storage provider has circumstances under which developers must retry to create reliable applications; Backblaze is no different. For GCS, we document truncated exponential backoff as the preferred…”
Read in the thread - Positive
“This would solve the 2pass problem while still ensuring the client is actually doing the integrity check -- and since Backblaze is more than likely to take the heat on any corruption issues, it's probably a good policy…”
Read in the thread - Critical
“Fair warning: Backblaze has a habit of making major changes silently (without any indication to the user), and their customer support is TERRIBLE. I was a customer for several years and never had a positive interaction…”
Read in the thread - Critical
“> I ask because I tried Backblaze a while back, and uploads from the UK were very slow. Curiously from here in Japan, I've managed to clock 80 MBit/s backing up to Backblaze. I presume it all has to do with what kind of…”
Read in the thread
Threads: Backblaze B2 Cloud Storage Now Has S3 Compatible APIs (2020, 279 comments) · Backblaze B2 Cloud Storage (2015, 225 comments)
These facts may be out of date. One of the official pages they came from changed on 2026-11-10, after we last read it. Check the tool's own pages before you rely on a price or a limit.
- Free tier
- The first 10 GB of storage is always free. Free egress up to 3x average monthly storage; overage is $0.01 per GB. Class A, B and C API calls are free for pay-as-you-go customers.
- Paid plan
- B2 Cloud Storage starts at $6.95 per TB per month, billed monthly. Annual commitments of 1 to 5 years are billed upfront. B2 Overdrive starts at $15 per TB per month and needs a multi-petabyte commitment. Currency is shown as $ only.
- Signup
- Not stated. The page has Start Free and Sign In buttons.
- Watermark
- Not applicable.
- Where files go
- Files you store are uploaded to Backblaze. The privacy notice covers account information, not stored file contents, and does not say how long files are kept.
From the tool's own pages, checked 2026-11-01. Sources: B2 pricing, Privacy. Prices and limits change; check the tool before you rely on them.
Get an email if Backblaze B2 changes
We check its official pages every week. If they change, we tell you, so you can see if the price or limits moved. No other email, and one click stops it.
Are you the maker of Backblaze B2? Link to this page
Copy this into your site. The link goes to this page, and it does not change any score.
<a href="https://agathox.com/tools/backblaze-b2">Backblaze B2 on agathox: compared and tested</a>
Tasks and scores
- Cloud storageNot tested yet
Similar tools
Top signals in Cloud storage.
Something wrong or out of date on this page? Tell us and we will fix it.