geojson.io

https://geojson.io· First analyzed 11 May 2026· Updated 11 May 2026

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geojson.io

Mobile

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Hosting Provider

GitHub Pages

pages.github.com

IP Address

185.199.109.153

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 San Francisco, United States

ASN

AS54113

Organization

GitHub, Inc

Server

GitHub.com

CDN

Fastly

Nameservers

ns-1548.awsdns-01.co.uk.ns-538.awsdns-03.net.ns-1417.awsdns-49.org.ns-148.awsdns-18.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

610 ms10%

Speed Index

793 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.3 MB

36 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Platform

GitHub Pages

CDN

Fastly

Technology Stack

9 Technologies Detected

Analytics

Other

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

Advertising

SEO Analysis

F39/100

Meta Tags8/15

Content3/12

Headings0/8

Technical9/21

E-E-A-T3/7

Images0/7

Links3/5

URL5/5

Social4/5

Freshness0/4

Mobile1/4

Indexability3/3

geojson.iogeojson.io

geojson.io | powered by Mapbox

A quick, simple tool for creating, viewing, and sharing spatial data.

Title Length30 chars

Recommended: 50-60 chars (~185px / 580px)

Description Length69 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

12 issues found

Upgrade to view details

Local SEO

Local Search Readiness

0/100

Poor

15 2

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

Sponsored

AI & LLM Readiness

F27/100

Bot Access

20/25

Machine Read.

2/25

Schema Data

0/25

Citation

5/25

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.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

code blocks

Text ratio:3%

Words:95

Token eff.:Too Short

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

66/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

3/20

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

4/15

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

4 recommendations

•Accessibility recommendation preview...

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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.

39/100

165 mg

CO₂e / view

1.3 MB

Page Weight

70%

Cleaner Than

New Visitor

188 mg

Returning (cached)

94 mg

Annual (10K/mo)

19.8 kg

Emission Segments

Data Center

37 mg

Network

40 mg

Device

88 mg

Resource Breakdown

JavaScript

1.1 MB

Images

5.7 KB

CSS

179.0 KB

Fonts

2.0 KB

HTML

3.4 KB

Green Hosting Not Verified

GitHub Pages

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

63d

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

14.04.2026

Valid Until

13.07.2026

Subject Alternative Names (1)

geojson.io

SHA-256 Fingerprint

99:7A:12:04:58:49:C8:4D:41:8B:53:01:24:5C:E4:05:8C:F4:A9:C4...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-origin

age

cache-control

🟡 600s(max-age=600)

content-encoding

📦 Gzip(gzip)

content-length

3206

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

geojson.io

Domain Age

12y 9m

Created

23.07.2013

Expires

23.07.2026

Last Updated

23.06.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

50/100

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.

Viewport

initial-scale=1,maximum-scale=1

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Open Sans + Helvetica Neue

WCAG Partial

67/100

Readability

/30

18/30

15px · LH 1.33

Hierarchy

/20

10/20

WCAG

/25

19/25

3.45:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Open Sans

Body Font

Helvetica Neue

Sans15px

Contrast Ratio

3.45:1

1 issue

Reading Comfort

Mixed Pairing

left aligned

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 3.5:1).

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

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

GGoogle Fonts

Color Palette

6 unique colors

Light

#ffffff

Background· 92.3%

#0e2127

Primary· 4.3%

#7d77b3

Secondary· 1%

#3f3562

Secondary· 0.9%

#bfc2d1

Secondary· 0.8%

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

SegmentEnterprise

Google Tag ManagerFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.segment.com(5)google-analytics.com(3)googletagmanager.com(2)assets.customer.io(1)docs.mapbox.com(1)

Website Identity

geojson.io

12 years old

Location detected: 🇺🇸 United Statesvia ip

Gandi SAS

Social Profiles

X (Twitter)

Sponsored

Last analyzed: 11 May 2026 at 17:50

Historical Analysis & Change Tracking