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

weblate.org

https://weblate.org· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

weblate.org

Mobile

Sponsored

Hosting Provider

Glow Internet s.r.o.

IP Address

77.78.107.252

Server Location

🇨🇿 Prague, Czechia

ASN

AS15685

Organization

Glow Internet s.r.o.

Server

Nginx

CDN

Cloudflare

WAF

Cloudflare

Nameservers

coby.ns.cloudflare.com.nicole.ns.cloudflare.com.

Performance

Page Speed

638 KB

33 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Glow Internet s.r.o.

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

2 Technologies Detected

CSS Frameworks

Tailwind CSS

Web Servers

Nginx

SEO Analysis

B74/100

weblate.orgweblate.org

Weblate – web-based localisation

Copylefted libre software, used by over 2,500 libre software projects and companies in over 165 countries.

Title Length32 chars

Recommended: 50-60 chars

Description Length143 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (6/11)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

46 URLs

robots.txt

5 rules

Sitemap reference found

Sponsored

A+

Security Score

100%Excellent

Static / Informational

HTTPS

No WAF

89d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

13.02.2026

Valid Until

14.05.2026

Subject Alternative Names (2)

weblate.orgwww.weblate.org

SHA-256 Fingerprint

8F:01:09:CE:8A:C9:6F:60:01:1F:92:66:1C:0E:AD:C4:57:5B:A3:07...

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-language

en-gb

content-security-policy

default-src 'self'; style-src 'self'; img-src 'self' data: h...

content-type

text/html; charset=utf-8

cross-origin-opener-policy

same-origin

date

Fri, 13 Feb 2026 15:57:53 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

www631.your-server.de

Domain Information

weblate.org

Domain Age

13y 11m

Created

29.02.2012

Expires

28.02.2027

Last Updated

03.02.2026

Registrar

Cloudflare, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Source Sans 3

56/100

Readability

/30

40/40

20px · LH 1.50

Hierarchy

/20

18/25

3x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Source Sans 3

Sans60px

Body Font

Source Sans 3

Sans20px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

60px

40px

26px

20px

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 3.0x larger than body text.

✅ Good performance: Using 1 font families keeps load times fast.

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

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

4 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(1)

Website Identity

Facebook X (Twitter)LinkedIn GitHub Mastodon

Sponsored

Last analyzed: 13 Feb 2026 at 15:57

Historical Analysis & Change Tracking