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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1stconcretecontractor.com

https://1stconcretecontractor.com· First analyzed 26 Apr 2026· Updated 26 Apr 2026

Export

Mobile

Sponsored

Hosting Provider

Google Cloud Platform

cloud.google.com

IP Address

34.174.104.8

Site Location

🇺🇸 HOUSTON, United Statesvia schema

Server Location

🇺🇸 Dallas, United States

ASN

AS396982

Organization

Google Cloud (us-south1)

Server

Nginx

CDN

Proxy Cache

Nameservers

ns1.siteground.net.ns2.siteground.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.0 s10%

Speed Index

1.4 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.6 MB

62 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

Kadencev1.4.5

by Kadence WP

View Theme

Technology Stack

14 Technologies Detected

Plugins

Burst Statistics Rank Leak Forminator Gtranslate Kadence Blocks

Libraries

CSS Frameworks

Icon Libraries

Analytics

Web Servers

SEO Analysis

A82/100

Meta Tags15/15

Content3/12

Headings7/8

Technical24/25

E-E-A-T2/7

Images6/7

Links4/5

URL5/5

Social5/5

Freshness4/4

Mobile4/4

Indexability3/3

1stconcretecontractor.com1stconcretecontractor.com

Concrete Construction Paving Contractor in Houston

Discover expert concrete services for driveways and sidewalks from a trusted Concrete Construction Paving Contractor in Houston.

Title Length50 chars

Recommended: 50-60 chars (~303px / 580px)

Description Length128 chars

Recommended: 120-160 chars

Issues (1)

• Very thin content (6 words). Search engines need substantial content for ranking.

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

3 URLs

3 sub-sitemaps

robots.txt

14 rules

Local SEO

Local Search Readiness

74/100

Good

19 3

Sponsored

AI & LLM Readiness

C60/100

Bot Access

20/25

Machine Read.

12/25

Schema Data

18/25

Citation

10/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:2%

Words:1,134

Token eff.:Optimal

Structured Data

10 JSON-LD

FAQPage×1.5Organization×1.1WebSiteLocalBusiness×1.1BreadcrumbListSpeakableSpecification×1.3SearchAction

sameAs entity links

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

AI readiness recommendation preview...

Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

83/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

17/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

5/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

15/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

11/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

1 recommendation

•Accessibility recommendation preview...

Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

57/100

163 mg

CO₂e / view

1.6 MB

Page Weight

60%

Cleaner Than

New Visitor

186 mg

Returning (cached)

93 mg

Annual (10K/mo)

19.5 kg

Emission Segments

Data Center

8 mg

Network

48 mg

Device

107 mg

Resource Breakdown

JavaScript

218.0 KB

Images

583.6 KB

CSS

769.8 KB

HTML

40.1 KB

Other

976 B

Green Hosting Verified

Google Cloud

GWF Verified

5 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

21%Critical

Interactive

HTTPS

No WAF

58d

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

26.03.2026

Valid Until

24.06.2026

Subject Alternative Names (2)

*.1stconcretecontractor.com1stconcretecontractor.com

SHA-256 Fingerprint

21:8E:DC:FF:0A:8D:84:25:E6:CD:04:BA:43:A4:A2:E6:CC:2B:37:6A...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache)

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Sun, 26 Apr 2026 09:21:52 GMT

host-header

6b7412fb82ca5edfd0917e3957f05d89

last-modified

Sat, 25 Apr 2026 19:42:55 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

mx30.antispam.mailspamprotection.com

mx10.antispam.mailspamprotection.com

mx20.antispam.mailspamprotection.com

Domain Information

1stconcretecontractor.com

Domain Age

5y 9m

Created

26.07.2020

Expires

26.07.2026

Last Updated

11.07.2025

Registrar

Domain.com - Network Solutions, LLC

DNSSEC

Not Enabled

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

83/100

Mobile Friendly313 breakpoints

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1, minimum-scale=1

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial

74/100

Readability

/30

25/30

17px · LH 1.60

Hierarchy

/20

14/20

1.88x ratio

WCAG

/25

15/25

1.05:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

-apple-system

Sans32px

Body Font

-apple-system

Sans17px

Contrast Ratio

1.05:1

23 issues

Reading Comfort

~35 CPL

Narrow lines

32px

28px

24px

17px

✅ Excellent readability: 17px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 47/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 23 elements below WCAG AA threshold (min 1.1:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

Fluid Type (rem)Flesch 47

Color Palette

10 unique colors

10.56:1 AAA Light

#ffffff

Text· 14.2%

#394139

Text· 7%

#1a202c

Primary· 22.599999999999998%

#101217

Secondary· 7.7%

#52493e

Secondary· 7.4%

#40291e

Secondary· 7%

#ae7e58

Secondary· 3.9%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

1stconcretecontractor.com(15)v0.wordpress.com(1)code.jquery.com(1)api.opticl.ai(1)stats.wp.com(1)

Website Identity

1st Concrete Contractor

CreativeWorkSeries

Houston Texas Concrete Construction Paving Service

rick@1stconcretecontractor.com

+18328402066

5 years old

HOUSTON

77035, HOUSTON, TX

Location detected: 🇺🇸 United States, HOUSTONvia schema

Domain.com - Network Solutions, LLCen-US

Social Profiles

Facebook LinkedIn

Sponsored

Last analyzed: 26 Apr 2026 at 09:22

Historical Analysis & Change Tracking