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

byjus.com

https://byjus.com· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

byjus.com

Sponsored

Hosting Provider

Google Cloud Platform

cloud.google.com

IP Address

34.36.4.163

Server Location

🇺🇸 Kansas City, United States

ASN

AS396982

Organization

Google Cloud

Server

Apache

Nameservers

dns2.icedns.is.dns1.icedns.is.

Performance

Page Speed

533 KB

123 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Bootstrap

CMS

WordPress

Infrastructure

Hosting

Google Cloud Platform

Technology Stack

18 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel FullStory Microsoft Clarity Segment

CSS Frameworks

Bootstrap

Tailwind CSS

Advertising

Google Ads Google AdSense

Frameworks

Angular

Libraries

jQuery

UI Components

Slick Carousel

Other

AOS (Animate On Scroll)

Icon Libraries

Tag Managers

Web Servers

CDN

SEO Analysis

A82/100

byjus.combyjus.com

BYJU'S Online learning Programs For K3, K10, K12, NEET, JEE, UPSC &...

BYJU'S comprehensive e-learning programs for K3, K10, K12, NEET, JEE, UPSC & Bank Exams from India's best teachers. Join today to fall in love with learning

Title truncated.

Title Length78 chars

Recommended: 50-60 chars

Description Length156 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

123 URLs

robots.txt

231 rules

Sitemap reference found

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

48d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

05.01.2026

Valid Until

05.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

byjus.com

SHA-256 Fingerprint

11:8F:AE:13:88:92:EB:F3:9D:F2:EF:08:AF:D5:DE:6B:8E:B3:AD:83...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

422128

alt-svc

h3=":443"; ma=2592000,h3-29=":443"; ma=2592000

cache-control

🟡 1 Hours(public,max-age=3600)

cache-id

LPP

cache-status

hit

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt2.aspmx.l.google.com

alt4.aspmx.l.google.com

alt3.aspmx.l.google.com

aspmx.l.google.com

+1 more

Domain Information

byjus.com

Domain Age

12y 8m

Created

19.06.2013

Expires

19.06.2032

Last Updated

25.11.2025

Registrar

Internet Domain Service BS Corp

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Roboto

56/100

Readability

/30

20/40

13px · LH 1.60

Hierarchy

/20

11/25

1.09x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Roboto

Sans14px

Body Font

Roboto

Sans13px

Contrast Ratio

Reading Comfort

~48 CPL

Optimal (45–75)

14px

22px

16px

18px

13px

Minor Second

Scale

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

✅ Optimal line spacing: 1.60 ratio ensures comfortable reading.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ 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.

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Microsoft ClarityFree

FullStoryEnterprise

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(2)d2r1yp2w7bby2u.cloudfront.net(2)connect.facebook.net(2)pagead2.googlesyndication.com(2)byjus.com(2)

Website Identity

byjus.com

12 years old

Internet Domain Service BS Corp📧 Google Workspace

Sponsored

Last analyzed: 16 Feb 2026 at 13:20

Historical Analysis & Change Tracking