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.

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inkscape.org

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

Export

inkscape.org

Mobile

Sponsored

Hosting Provider

University of Oregon

IP Address

140.211.167.237

Server Location

🇺🇸 Corvallis, United States

ASN

AS3701

Organization

University of Oregon

Server

Nginx

Nameservers

ns2.auth.osuosl.org.ns1.auth.osuosl.org.ns3.auth.osuosl.org.

Performance

Page Speed

25 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

University of Oregon

Technology Stack

2 Technologies Detected

Libraries

jQuery

Web Servers

Nginx

SEO Analysis

D58/100

inkscape.orginkscape.org

Inkscape - Draw Freely. | Inkscape

Inkscape is professional vector graphics software which runs on Linux, macOS and Windows desktop computers.

Title Length34 chars

Recommended: 50-60 chars

Description Length107 chars

Recommended: 120-160 chars

Issues (0)

6 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

12 rules

Sponsored

Security Score

46%Poor

Interactive

HTTPS

No WAF

64d

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

Valid From

18.01.2026

Valid Until

18.04.2026

Subject Alternative Names (1)

inkscape.org

SHA-256 Fingerprint

53:39:EB:4F:FE:23:D6:B9:7F:0E:36:EC:F9:2C:33:1C:C8:76:B7:AF...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(max-age=0, no-cache, no-store, must-revalidate, private)

content-language

content-length

31021

content-type

text/html; charset=utf-8

date

Thu, 12 Feb 2026 16:32:46 GMT

expires

Thu, 12 Feb 2026 16:32:46 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (4)

smtp3.osuosl.org

smtp1.osuosl.org

smtp2.osuosl.org

smtp4.osuosl.org

Domain Information

inkscape.org

Domain Age

22y 3m

Created

26.10.2003

Expires

26.10.2026

Last Updated

01.09.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Trebuchet MS + Liberation Sans

46/100

Readability

/30

10/40

13px · LH --

Hierarchy

/20

18/25

2.34x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Trebuchet MS

Sans30px

Body Font

Liberation Sans

Sans13px

Contrast Ratio

Reading Comfort

~42 CPL

Needs attention

30px

22px

13px

❌ Critical: 13px body text is too small. Increase to at least 14px.

✅ Strong hierarchy: Headlines are 2.3x larger than body text.

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 28 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

9 Resources

Scripts

Styles

Async

Defer

Top Script Sources

media.inkscape.org(3)

Sponsored

Last analyzed: 12 Feb 2026 at 16:33

Historical Analysis & Change Tracking