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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heroku.com

https://heroku.com· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

heroku.com

Mobile

Sponsored

Hosting Provider

Automattic, Inc

IP Address

192.0.66.110

Server Location

🇺🇸 San Francisco, United States

ASN

AS2635

Server

Nginx

CDN

Nameservers

ns01.herokudns.net.ns02.herokudns.net.ns03.herokudns.net.ns04.herokudns.net.+4 more

Performance

Page Speed

939 KB

107 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Orbit Media Elementorv1.0.1

by Orbit Media

View Theme

Technology Stack

25 Technologies Detected

Plugins

Co Authors Plus Safe Svg

Elementor

Gravity Forms

Gravityformsrecaptcha Megamenu Megamenu Pro

Libraries

Frameworks

UI Components

Other

CSS Frameworks

Icon Libraries

Analytics

Tag Managers

Web Servers

CDN

Security

SEO Analysis

A+94/100

heroku.comheroku.com

The AI PaaS for Deploying, Managing, and Scaling Apps

Heroku is an AI platform as a service (AI PaaS) that enables developers to build, run, and scale applications entirely in the cloud.

Title Length53 chars

Recommended: 50-60 chars

Description Length132 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

8 rules

Sitemap reference found

Sponsored

Security Score

86%Very Good

Interactive

HTTPS

No WAF

47d

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

02.01.2026

Valid Until

02.04.2026

Subject Alternative Names (2)

heroku.comwww.heroku.com

SHA-256 Fingerprint

13:A9:1F:85:E8:4E:11:06:0D:8E:3E:AB:62:3B:4F:55:53:69:06:D8...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 1 Hours(public, max-age=3600)

content-encoding

⚡ Brotli(br)

content-security-policy

default-src https: data: wss://*.hotjar.com wss://*.crazyegg...

content-type

text/html; charset=UTF-8

date

Fri, 13 Feb 2026 22:14:29 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxa-00177002.gslb.pphosted.com

mxb-00177002.gslb.pphosted.com

Domain Information

heroku.com

Domain Age

18y 8m

Created

15.06.2007

Expires

15.06.2027

Last Updated

14.05.2025

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Typography & Readability

Avant Garde + Salesforce Sans

57/100

Readability

/30

17/40

14px · LH 1.00

Hierarchy

/20

25/25

2.86x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Avant Garde

Sans40px

Body Font

Salesforce Sans

Sans14px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

40px

32px

16px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

✅ Strong hierarchy: Headlines are 2.9x larger than body text.

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

⚠️ Cramped layout: 90 elements lack adequate spacing.

⚠️ Inconsistent alignment: Mix of left/center/right creates visual noise.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

heroku.com(14)googletagmanager.com(2)cdn.datatables.net(2)gstatic.com(1)cdn.parsely.com(1)

Website Identity

heroku.com

18 years old

MarkMonitor Inc.

Social Profiles

X (Twitter)LinkedIn GitHub Bluesky

Sponsored

Last analyzed: 13 Feb 2026 at 22:14

Historical Analysis & Change Tracking