Frequently Asked Questions
Which Payment methods do you accept?
Payments are managed by Recurly, which accepts most credit cards.
We also accept money transfer for yearly Enterprise subscriptions - contact us if you're interested.
What if I don't have Euros or US Dollars?
Provided you have an international card (Visa, MasterCard, etc.),
your bank will make the conversion for you.
Are taxes included in the prices above?
Prices are excluding taxes. In some cases, VAT may be added to
your bill and total amount charged, according to your country of residence's VAT rate on
digital products and services.
Can I try Blackfire for free?
The Premium Edition offers a free 15 days trial. No credit card is
asked for starting the trial. Once the trial is over, your account will be downgraded to
the Hack Edition, unless you decide to subscribe to one of our paid Editions.The Hack
Edition Blackfire is a fully free subscription. However its features and usage are
Is there a free version for students?
Yes! We are thrilled to partner with GitHub Education and offer a
free Profiler subscription via the GitHub Student Developer Pack to eligible students,
schools and universities.
Read more about this.
What are Organizations in Blackfire?
Organizations enable a team of developers to subscribe together to
the Premium or Enterprise Editions.Creating an organization is mandatory for such
subscriptions, and for the Premium trial. Canceling Organization subscriptions may resut
in some data loss (Profiles, builds,...).
What Network information are gathered?
The PHP probe gathers costs information about HTTP queries made
through cURL. HTTP calls made through file_get_contents() are handled when using Guzzle or Buzz. More
extensive support is coming soon. In order to prevent any leak of confidential data, URL
parameters are removed before they ever hit blackfire.io's servers. The probe also
gathers the number of bytes that go in and out of the PHP stream layer or cURL
extension. This includes e.g. all network calls made using the socket or stream API
(file_get_content, fgets...), the curl extension or the mysqlnd driver.
What SQL information are gathered?
The PHP probe gathers costs information about any SQL queries made
using the PDO abstraction layer. Other drivers
(mysql, mysqli, pgsql, oci8) are supported, too. In order to prevent any leak of
confidential data, SQL parameters are removed before they ever hit blackfire.io's
What is timeline visualization?
The timeline visualization shows individual function calls in
a time-oriented way.
What is an Environment?
Environments allow you to give profiling access to a group of
people on the same app, server, or cluster of servers.
There are many options to configure environments, depending on
your needs, workflows and current tooling.
Read more in the
What are Assertions?
Blackfire provides a way to define performance assertions in a
.blackfire.yaml file that you store along side your
code. Assertions allows to configure absolute and relative thresholds to determine if a
profile meets your own performance criteria.
What is Distributed Profiling?
Blackfire supports profiling micro-services out-of-the-box. The
Distributed Profiling feature enables to profile an HTTP request and propagate profiling
to all sub-requests served by a PHP server on which Blackfire is installed.
Read more in the documentation.
What are Recommendations?
Any time you profile your code, Blackfire detects issues according
to best practices defined by our performance experts. Resolution recommendations are
shown on each corresponding profile, and are fully documented so that you can understand
exactly why we recommend such a best practice, how to fix the issue, and how to add a
non-regression test in your
What are Builds?
Build reports are the result of running scenarios; they are
environment specific, they need to be defined on the Blackfire.io Environment page.
Builds can be started periodically, using the API or one of the integration
(Platform.sh, New Relic, Quanta Monitoring...)
What are Notification Channels?
Notification Channels are used whenever a scenario is completed
and a report is available; as they are environment specific, they need to be defined on
the Blackfire.io Environment page. Notification Channels are webhooks, e-mails, or
native integrations with third party services (such as GitHub, Slack, ...).
Is there any profile request limit?
For regular usages, you should never hit our generous 1,000
profiles per day per user.
Is there any builds request limit?
For regular usages, you should never hit our generous 350 builds
per day per user.
Profiling on production servers or
Blackfire can be used to profile code anywhere: development, test,
staging, or production. In the free Hack Edition, only profiling on local development
computers is allowed.
Your question is not on the list? We'll answer you anyway.
Use the support
website to submit a question about the Blackfire plans and pricing.