mpfr.org

https://mpfr.org· First analyzed 11 May 2026· Updated 11 May 2026

Export

mpfr.org

Mobile

Sponsored

Hosting Provider

INRIA

IP Address

128.93.162.51

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Charenton-le-Pont, France

ASN

AS2200

Server

Apache

Nameservers

ns5.safebrands.tech.ns3.safebrands.com.ns2.safebrands.eu.ns4.safebrands.org.+1 more

Performance

100

Core Web Vitals

Weight

First Contentful Paint

615 ms10%

Speed Index

800 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

52 KB

6 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

INRIA

Technology Stack

1 Technologies Detected

Web Servers

Apachev2.4.6

SEO Analysis

D50/100

Meta Tags4/15

Content12/12

Headings8/8

Technical7/21

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

mpfr.orgmpfr.org

The GNU MPFR Library

No description available for this page.

Title Length20 chars

Recommended: 50-60 chars (~127px / 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)

11 issues found

Upgrade to view details

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.

Sponsored

AI & LLM Readiness

F38/100

Bot Access

20/25

Machine Read.

14/25

Schema Data

0/25

Citation

4/25

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:34%

Words:2,335

Token eff.:Optimal

Sections/1K:3

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary12w

Descriptive Headingsavg 2.6w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

Upgrade to view recommendations

Sponsored

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.

74/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

14/20

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.

53/100

A+

6 mg

CO₂e / view

51.8 KB

Page Weight

95%

Cleaner Than

New Visitor

7 mg

Returning (cached)

4 mg

Annual (10K/mo)

768 g

Emission Segments

Data Center

1 mg

Network

2 mg

Device

3 mg

Resource Breakdown

Images

5.8 KB

CSS

2.2 KB

HTML

43.7 KB

Green Hosting Not Verified

INRIA

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

86%Very Good

Static / Informational

HTTPS

No WAF

197d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

25.11.2025

Valid Until

25.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (3)

mpfr.loria.frmpfr.orgwww.mpfr.org

SHA-256 Fingerprint

08:65:A8:98:FD:DE:67:31:91:EB:DC:77:4D:92:79:F0:06:70:27:38...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

connection

Keep-Alive

content-length

44484

content-type

text/html; charset=ISO-8859-1

date

Mon, 11 May 2026 23:58:41 GMT

etag

"adc4-648efe436ea49"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mx-02.mail-forwarder.io

mx-01.mail-forwarder.io

Domain Information

mpfr.org

Domain Age

25y 3m

Created

23.01.2001

Expires

23.01.2027

Last Updated

27.12.2025

Registrar

SafeBrands 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.

40/100

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.

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Times New Roman

WCAG AAA

77/100

Readability

/30

20/30

16px · LH --

Hierarchy

/20

19/20

2x ratio · ✓ H1→H6

WCAG

/25

24/25

8.25:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Times New Roman

Serif32px

Body Font

Times New Roman

Serif16px

Contrast Ratio

8.25:1

WCAG AAA (≥7:1)

Reading Comfort

~41 CPL

Narrow lines

32px

24px

16px

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

⚠️ Hard to read: Flesch score 37/100. Simplify sentences for wider reach.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 8.2:1).

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

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 37

Color Palette

7 unique colors

Light

#ffffff

Background· 85.19999999999999%

#9397ac

Primary· 4.2%

#b0b5c3

Secondary· 3.3%

#e2e4e8

Secondary· 2.2%

#64728c

Secondary· 1.8%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

2 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Website Identity

mpfr.org

25 years old

Location detected: 🇫🇷 Francevia ip

SafeBrands SASen

Social Profiles

GitHub

Sponsored

Last analyzed: 11 May 2026 at 23:58

Historical Analysis & Change Tracking