What technology does blackfire.io use?

blackfire.io is built with Gatsby.

Is blackfire.io secure (HTTPS)?

Yes. blackfire.io uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 13, 2026.

Who hosts blackfire.io?

Hosting provider information for blackfire.io is not available yet.

What is blackfire.io's SEO score?

blackfire.io scored 60/100 for SEO in the latest analysis (fair).

What is blackfire.io's overall website score?

blackfire.io has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.

Has blackfire.io's score changed over time?

blackfire.io's overall score has declined by 1 point (from 87 to 86) since Jul 26, 2026.

blackfire.io

Crush performance bottlenecks | Blackfire PHP & Python Observability

Last scanned Aug 2, 2026, 3:00 PM · 12 views

Overall score

Great

Summary

Blackfire's continuous observability solution empowers developers to monitor their applications' real-time behavior and proactively identify existing bottlenecks or the consequences of upcoming changes before they reach… This website uses Gatsby. SEO is fair (60/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.

Top issues to fix

9 issues found · 1 high priority

Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Title longer than 60 characters
SEO
Shorten the title to under 60 characters so search results don't truncate it.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
Multiple H1 headings found
SEO
Keep a single H1 per page and demote the others to H2/H3.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

+3 more issues — details in the sections below.

SEO

7 issue(s) found

100

Performance

752 ms

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

-1 overall since Jul 26, 2026

Overall: 86
SEO: 60
Security: 90
Performance: 100
Accessibility: 100

Organization

Company details published in this site's own structured data.

GitHub YouTube

Meta tags

Title: Crush performance bottlenecks | Blackfire PHP & Python Observability
Description: Blackfire's continuous observability solution empowers developers to monitor their applications' real-time behavior and proactively identify existing bottlenecks or the consequences of upcoming changes before they reach production.
Canonical
Language: en
Charset: utf-8
Viewport: width=device-width, initial-scale=1, shrink-to-fit=no
Robots meta
Manifest: https://www.blackfire.io/manifest.webmanifest

Technologies

Detected frameworks, languages, and tools.

Gatsby

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: about.blackfire.io
Valid from: Jun 15, 2026
Valid to: Sep 13, 2026
Days until expiry: 41
SAN domains: about.blackfire.io, status.blackfire.io, support.blackfire.io, www.blackfire.io

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyMissing
X-Frame-OptionsEnabled
X-Content-Type-OptionsEnabled
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 2 · H2 12 · H3 0

Links

26 internal · 23 external · 20 broken

Images

43 total · 0 missing alt

Scripts / Styles

30 scripts · 0 stylesheets

JS / CSS size

16.4 KB · 59.0 KB

Page size

148 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Title longer than 60 characters
Meta description longer than 160 characters
Missing canonical link
Multiple H1 headings found
No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://blackfire.io
Final URL: https://www.blackfire.io
HTTP status: 200
HTTP version: HTTP/2
Response time: 749 ms
HTML size: 148 KB
Redirect chain: https://blackfire.io → https://www.blackfire.io

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does blackfire.io use?: blackfire.io is built with Gatsby.
Is blackfire.io secure (HTTPS)?: Yes. blackfire.io uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 13, 2026.
Who hosts blackfire.io?: Hosting provider information for blackfire.io is not available yet.
What is blackfire.io's SEO score?: blackfire.io scored 60/100 for SEO in the latest analysis (fair).
What is blackfire.io's overall website score?: blackfire.io has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.
Has blackfire.io's score changed over time?: blackfire.io's overall score has declined by 1 point (from 87 to 86) since Jul 26, 2026.