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aiohttp.org

https://aiohttp.org· First analyzed 21 May 2026· Updated 21 May 2026
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aiohttp.org
Desktop screenshot of aiohttp.org
Mobile screenshot of aiohttp.org
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

172.67.130.78

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

GitHub.com

CDN

Fastly

Nameservers

beth.ns.cloudflare.com.dale.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
580 ms10%
Speed Index
754 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
127 KB
6 requests
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Pelican
Infrastructure
Platform
GitHub Pages
CDN
Fastly

SEO Analysis

D48/100
13
9
1
Meta Tags4/15
Content7/12
Headings8/8
Technical10/21
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
A
aiohttp.orgaiohttp.org

aio-libs - Aiohttp

No description available for this page.

Title Length18 chars

Recommended: 50-60 chars (~102px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing meta description — important for click-through rates in SERPs

10 issues found

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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

F36/100
Bot Access
20/25
Machine Read.
8/25
Schema Data
0/25
Citation
8/25

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
header/footer
Text ratio:20%
Words:154
Token eff.:Too Short
Sections/1K:6.5
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary48w
Descriptive Headingsavg 1w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
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.
B
73/100
11
Passed
2
Critical
0
Warnings
Images & Alt Text
10/20
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
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 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.
78/100
A+
13 mg
CO₂e / view
127.1 KB
Page Weight
95%
Cleaner Than
New Visitor
15 mg
vs
Returning (cached)
7 mg
Annual (10K/mo)
1.5 kg
Emission Segments
Data Center
<0.001 g
Network
4 mg
Device
8 mg
Resource Breakdown
JavaScript
549 B
Images
1.1 KB
CSS
123.6 KB
HTML
1.9 KB
Green Hosting Verified
Cloudflare
GWF Verified
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

62d

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

23.04.2026

Valid Until

22.07.2026

Subject Alternative Names (2)

aio-libs.orgwww.aio-libs.org

SHA-256 Fingerprint

52:D6:73:43:5E:51:9D:FE:D1:54:91:C8:3F:72:E4:38:65:D7:C8:61...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
access-control-allow-origin
*
age
0
cache-control
🟡 600s(max-age=600)
content-encoding
📦 Gzip(gzip)
content-length
1655
Good Warning Issue

Email Infrastructure

ImprovMX

Score

50

SPF
DKIM
DMARC

MX Records (2)

mx1.improvmx.com
mx2.improvmx.com

Domain Information

aiohttp.org

Domain Age
9y 11m

Created

01.06.2016

Expires

01.06.2027

Last Updated

18.05.2026

Registrar

NameCheap, Inc.

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.
D
59/100
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
width=device-width, initial-scale=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Merriweather Sans + Merriweather

WCAG Partial
78/100
Readability
/30
24/30

16px · LH 1.50

Hierarchy
/20
14/20

1.5x ratio · ✓ H1→H6

WCAG
/25
19/25

2.85:1 min contrast

Performance
/25
21/25

2 fonts

Heading Font

Merriweather Sans

Sans24px

Body Font

Merriweather

Serif16px

Contrast Ratio

2.85:1

2 issues

Reading Comfort

~39 CPL

Narrow lines
24px
h1
22px
h2
16px
p

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

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

❌ Very complex text: Flesch score 29/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 2.9:1).

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

✅ Lean font stack: 2 font families keeps load times fast.

Buy on MyFontsVariable FontsFlesch 29

Color Palette

8 unique colors
3.89:1 AA Large Light
#ffffff
Background· 87.4%
#81808b
Other· 2.3%
#c0c1d0
Primary· 2%
#aba9c3
Secondary· 1.8%
#d7d9e1
Secondary· 1.7%
#9c9eb2
Secondary· 1.6%

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Scripts & Styles

3 Resources

1
Scripts
2
Styles
0
Async
1
Defer

Top Script Sources

local(1)

Website Identity

aiohttp.org

9 years old
Location detected: 🇨🇦 Canadavia ip
NameCheap, Inc.📧 ImprovMXen

Social Profiles

GitHub

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Last analyzed: 21 May 2026 at 00:26

Historical Analysis & Change Tracking