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

glitch.com

https://glitch.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

glitch.com

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.2.132

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

CDN

Fastly

Nameservers

edns1.ultradns.net.edns1.ultradns.org.ns-cloud-d1.googledomains.com.ns-cloud-d2.googledomains.com.+4 more

Performance

Page Speed

508 KB

11 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Fastly, Inc.

CDN

Fastly

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

1 Technologies Detected

CSS Frameworks

Tailwind CSS

SEO Analysis

D52/100

glitch.comglitch.com

Glitch Blog

The official blog for glitch.com

Title Length11 chars

Recommended: 50-60 chars

Description Length32 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

6 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

58 rules

Allows all crawlers

Sponsored

Security Score

71%Good

Static / Informational

HTTPS

No WAF

29d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Certainly

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

20.02.2026

Valid Until

22.03.2026

Subject Alternative Names (1)

blog.glitch.com

SHA-256 Fingerprint

CF:52:59:02:02:BE:98:2B:A0:99:D5:3D:76:74:E7:C8:1E:53:4F:BC...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

⚡ Brotli(br)

content-length

15387

content-type

text/html

date

Fri, 20 Feb 2026 07:32:59 GMT

etag

"e8493f9e9197ec0f220c191502d383965bc9512dbb07937265541e11836...

last-modified

Thu, 24 Jul 2025 19:41:40 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

glitch.com

Domain Age

28y 3m

Created

20.11.1997

Expires

19.11.2027

Last Updated

18.10.2025

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Typography & Readability

InterVariable

61/100

Readability

/30

30/40

18px · LH --

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

InterVariable

Sans

Body Font

InterVariable

Sans18px

Contrast Ratio

Reading Comfort

~33 CPL

Needs attention

40px

18px

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

✅ 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.

⚠️ Cramped layout: 14 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Website Identity

X (Twitter)Mastodon

Sponsored

Last analyzed: 20 Feb 2026 at 07:33

Historical Analysis & Change Tracking