What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

Back to Search

codeberg.org

https://codeberg.org· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

codeberg.org

Mobile

Sponsored

Hosting Provider

IN-BERLIN

IP Address

217.197.84.140

Server Location

🇩🇪 Berlin, Germany

ASN

AS29670

Nameservers

ns2.dnsowl.com.ns3.dnsowl.com.ns1.dnsowl.com.

Performance

Page Speed

656 KB

11 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

IN-BERLIN

Progressive Web App

Web Manifest

Technology Stack

2 Technologies Detected

Libraries

jQuery

CSS Frameworks

Tailwind CSS

SEO Analysis

D58/100

codeberg.orgcodeberg.org

Codeberg.org

Codeberg is a non-profit community-led organization that aims to help free and open source projects prosper by giving them a safe and friendly home.

Title Length12 chars

Recommended: 50-60 chars

Description Length148 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

5 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

89 rules

Sponsored

Security Score

51%Poor

Interactive

HTTPS

No WAF

88d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

11.02.2026

Valid Until

12.05.2026

Subject Alternative Names (1)

codeberg.org

SHA-256 Fingerprint

E2:3A:45:F1:C8:B4:3F:1A:97:68:D5:CA:BA:3D:94:6B:52:C0:1C:C2...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=2592000,h3=":443"; ma=2592000

cache-control

🟡 0s(max-age=0, private, must-revalidate, no-transform)

content-type

text/html; charset=utf-8

date

Thu, 12 Feb 2026 13:20:25 GMT

permissions-policy

interest-cohort=()

strict-transport-security

max-age=63072000; includeSubDomains; preload

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

smtp.codeberg.org

Domain Information

codeberg.org

Domain Age

7y 7m

Created

05.07.2018

Expires

05.07.2028

Last Updated

18.06.2019

Registrar

NameSilo, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

-apple-system

78/100

Readability

/30

40/40

18px · LH 1.43

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

-apple-system

Sans

Body Font

-apple-system

Sans18px

Contrast Ratio

Reading Comfort

~31 CPL

Needs attention

32px

28px

19px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 15 elements lack adequate spacing.

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

5 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(2)

Sponsored

Last analyzed: 12 Feb 2026 at 13:20

Historical Analysis & Change Tracking