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jsonlines.org

https://jsonlines.org· First analyzed 09 May 2026· Updated 09 May 2026
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jsonlines.org
Desktop screenshot of jsonlines.org
Mobile screenshot of jsonlines.org
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

104.21.44.235

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

greg.ns.cloudflare.com.ryleigh.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
407 ms10%
Speed Index
529 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
52 KB
8 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Technology Stack

2 Technologies Detected

Fonts

1
Google Fonts

CDN

1
Cloudflare

SEO Analysis

D45/100
14
7
2
Meta Tags4/15
Content9/12
Headings8/8
Technical7/21
E-E-A-T0/7
Images0/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
J
jsonlines.orgjsonlines.org

JSON Lines

No description available for this page.

Title Length10 chars

Recommended: 50-60 chars (~62px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

Local SEO

Local Search Readiness

3/100
Poor
1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

D52/100
Bot Access
20/25
Machine Read.
22/25
Schema Data
0/25
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
code blocksnavheader/footer
Text ratio:51%
Words:400
Token eff.:Optimal
Sections/1K:12.5
Depth:3/5

Structured Data

No Schema

Citation Readiness

Opening Summary60w
Descriptive Headingsavg 5w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (7)
AI readiness recommendation preview...
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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.
A
80/100
11
Passed
2
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
15/15
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
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
1/15
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.
77/100
A+
5 mg
CO₂e / view
52.2 KB
Page Weight
95%
Cleaner Than
New Visitor
6 mg
vs
Returning (cached)
3 mg
Annual (10K/mo)
636 g
Emission Segments
Data Center
<0.001 g
Network
2 mg
Device
4 mg
Resource Breakdown
CSS
49.3 KB
Fonts
757 B
HTML
2.1 KB
Green Hosting Verified
Cloudflare
GWF Verified
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

78%Good
Static / Informational

HTTPS

WAF

69d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

18.04.2026

Valid Until

17.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

jsonlines.org

SHA-256 Fingerprint

97:87:5F:8B:7F:81:9F:C2:EC:D9:4A:45:24:27:56:CA:DA:B8:B0:DF...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin
*
alt-svc
h3=":443"; ma=86400
cache-control
🟡 0s(public, max-age=0, must-revalidate)
cf-cache-status
DYNAMIC
cf-ray🇫🇷 Paris
9f8eb1648fd22a05-CDG
content-encoding
⚡ Brotli(br)
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

0

SPF
DKIM
DMARC

Domain Information

jsonlines.org

Domain Age
12y 7m

Created

02.10.2013

Expires

02.10.2026

Last Updated

16.11.2025

Registrar

Rebel Ltd

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.
F
34/100
Not Mobile Friendly1 breakpoint
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.
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Helvetica Neue

WCAG AA
88/100
Readability
/30
28/30

16px · LH 1.50

Hierarchy
/20
20/20

3x ratio · ✓ H1→H6

WCAG
/25
21/25

5.48:1 min contrast

Performance
/25
19/25

System fonts

Heading Font

Helvetica Neue

Sans48px

Body Font

Helvetica Neue

Sans16px

Contrast Ratio

5.48:1

WCAG AA (≥4.5:1)

Reading Comfort

~40 CPL

Narrow lines
48px
h1
24px
h2
18px
h3
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.5:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 3.0x larger than body text.

✅ System fonts: Zero font loading delay — best possible LCP impact.

GGoogle FontsFlesch 62

Color Palette

3 unique colors
Light
#e5e5e5
Other· 74.7%

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Scripts & Styles

4 Resources

0
Scripts
4
Styles
0
Async
0
Defer

Top Script Sources

Website Identity

jsonlines.org

12 years old
Location detected: 🇨🇦 Canadavia ip
Rebel Ltden

Social Profiles

X (Twitter)GitHub

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Last analyzed: 09 May 2026 at 06:37

Historical Analysis & Change Tracking