What technology does builder.io use?

builder.io is built with Express, Node.js.

Is builder.io secure (HTTPS)?

Yes. builder.io uses TLS 1.3 with a certificate issued by Amazon, valid until Jan 12, 2027.

Who hosts builder.io?

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

What is builder.io's SEO score?

builder.io scored 80/100 for SEO in the latest analysis (great).

What is builder.io's overall website score?

builder.io has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.

Has builder.io's score changed over time?

builder.io's overall score has declined by 3 points (from 91 to 88) since Jul 25, 2026.

builder.io

Builder.io: Collaborative Platform to Build With AI Agents

Last scanned Aug 1, 2026, 5:00 PM · 10 views

Overall score

Great

Summary

One codebase for engineers, designers, PMs, and marketers. This website uses Express behind CloudFront CDN. SEO is good (80/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.

One codebase for engineers, designers, PMs, and marketers. Everyone works from one source of truth, on brand and in code, with no handoffs to clean up.

Top issues to fix

7 issues found · 2 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

+1 more issue — details in the sections below.

SEO

3 issue(s) found

100

Performance

150 ms

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

-3 overall since Jul 25, 2026

Overall: 88
SEO: 80
Security: 75
Performance: 100
Accessibility: 100

Organization

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

One codebase for engineers, designers, PMs, and marketers. Everyone works from one source of truth, on brand and in code, with no handoffs to clean up.

YouTube X (Twitter)LinkedIn

Meta tags

Title: Builder.io: Collaborative Platform to Build With AI Agents
Description: One codebase for engineers, designers, PMs, and marketers. Everyone works from one source of truth, on brand and in code, with no handoffs to clean up.
Canonical: https://www.builder.io/
Language: en
Charset: UTF-8
Viewport: width=device-width, initial-scale=1
Robots meta
Manifest: https://www.builder.io/site.webmanifest

Technologies

Detected frameworks, languages, and tools.

Express Node.js

Hosting & CDN

Hosting provider: —
CDN provider: CloudFront
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: Amazon
Subject: *.builder.io
Valid from: Jun 29, 2026
Valid to: Jan 12, 2027
Days until expiry: 164
SAN domains: *.builder.io

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 9 · H3 18

Links

50 internal · 7 external · 20 broken

Images

59 total · 0 missing alt

Scripts / Styles

12 scripts · 2 stylesheets

JS / CSS size

3.1 KB · 94.0 KB

Page size

260 KB

Robots.txt & Sitemap

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

SEO issues

No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://builder.io
Final URL: https://www.builder.io/
HTTP status: 200
HTTP version: HTTP/2
Response time: 145 ms
HTML size: 260 KB
Redirect chain: https://builder.io → https://www.builder.io/

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Frequently asked questions

What technology does builder.io use?: builder.io is built with Express, Node.js.
Is builder.io secure (HTTPS)?: Yes. builder.io uses TLS 1.3 with a certificate issued by Amazon, valid until Jan 12, 2027.
Who hosts builder.io?: Hosting provider information for builder.io is not available yet.
What is builder.io's SEO score?: builder.io scored 80/100 for SEO in the latest analysis (great).
What is builder.io's overall website score?: builder.io has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.
Has builder.io's score changed over time?: builder.io's overall score has declined by 3 points (from 91 to 88) since Jul 25, 2026.