softwareheritage.org

https://softwareheritage.org· First analyzed 01 May 2026· Updated 01 May 2026

Export

Mobile

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Hosting Provider

Gandi

gandi.net

IP Address

217.70.184.55

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Paris, France

ASN

AS29169

Organization

Gandi France L/B Services

Server

Apache

CDN

Nameservers

ns-170-c.gandi.net.ns-188-b.gandi.net.ns-140-a.gandi.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

881 ms10%

Speed Index

1.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.5 MB

114 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4.1775045651

cms

Layers SWHv0.1.0Custom

by The Software Heritage developers

Technology Stack

31 Technologies Detected

Plugins

Menu Icons

Contact Form 7

Give Give Funds Give Fee Recovery Give Form Field Manager

WPML

Give Currency Switcher

WPML

Give Recurring Gallery Block Lightbox Nelio Content Premium Layers Pro Extension Team Showcase Supreme Pro Version Teachpress

Libraries

Underscore.js Lightbox

CSS Frameworks

UI Components

Icon Libraries

Fonts

Analytics

Email Marketing

Payments

Web Servers

Languages

SEO Analysis

C66/100

Meta Tags4/15

Content11/12

Headings1/8

Technical24/25

E-E-A-T2/7

Images3/7

Links2/5

URL5/5

Social3/5

Freshness4/4

Mobile4/4

Indexability3/3

softwareheritage.orgsoftwareheritage.org

Home Page - Software Heritage

No description available for this page.

Title Length29 chars

Recommended: 50-60 chars (~183px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (45/46) — critical for accessibility and SEO

10 issues found

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Crawlability

Sitemap

Type: index

7 URLs

7 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

20/100

Needs Work

6 12

Sponsored

AI & LLM Readiness

D48/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

7/25

Citation

11/25

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

nav

Text ratio:5%

Words:1,054

Token eff.:Optimal

Sections/1K:22.8

Depth:1/5

Structured Data

4 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary12w

Descriptive Headingsavg 2.7w

Canonical URL

Open Graph1/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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.

67/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

11/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

5/15

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

11/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

10/15

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.

56/100

160 mg

CO₂e / view

1.5 MB

Page Weight

60%

Cleaner Than

New Visitor

183 mg

Returning (cached)

92 mg

Annual (10K/mo)

19.2 kg

Emission Segments

Data Center

8 mg

Network

47 mg

Device

105 mg

Resource Breakdown

JavaScript

177.8 KB

Images

821.0 KB

CSS

564.5 KB

Fonts

1.0 KB

HTML

22.1 KB

Other

464 B

Green Hosting Verified

Gandi

Provider Match

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

67d

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

09.04.2026

Valid Until

08.07.2026

Subject Alternative Names (2)

softwareheritage.orgwww.softwareheritage.org

SHA-256 Fingerprint

BA:6F:95:EC:59:6D:D3:D2:F7:73:CB:F7:03:F9:3F:AC:BF:E0:5A:81...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

content-encoding

📦 Gzip(gzip)

content-length

22338

content-type

text/html; charset=UTF-8

date

Fri, 01 May 2026 17:08:10 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

spool.mail.gandi.net

fb.mail.gandi.net

Domain Information

softwareheritage.org

Domain Age

11y 7m

Created

09.09.2014

Expires

09.09.2031

Last Updated

30.05.2025

Registrar

Gandi SAS

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.

65/100

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,maximum-scale=1,user-scalable=no

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Alegreya + Alegreya Sans

WCAG Fail

54/100

Readability

/30

20/30

20px · LH 1.50

Hierarchy

/20

7/20

WCAG

/25

13/25

1:1 min contrast

Performance

/25

14/25

2 fonts · 10 req

Heading Font

Alegreya

Serif

Body Font

Alegreya Sans

Sans20px

Contrast Ratio

1:1

49 issues

Reading Comfort

~41 CPL

Narrow lines

40px

20px

✅ Excellent readability: 20px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

❌ Low contrast: 49 elements fail WCAG AA (min 1.0:1). Increase text/background contrast.

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

GGoogle Fonts Buy on MyFontsFluid Type (rem)Flesch 0

Color Palette

9 unique colors

21:1 AAA Dark

#000000

Background· 38.6%

#ffffff

Background· 37.400000000000006%

#c3a8a0

Primary· 3.3%

#725c5b

Secondary· 3.3%

#dfd7d2

Secondary· 2.6%

#5a2228

Secondary· 1.9%

Business & Marketing Stack

3 Tools Detected

Advanced

Marketing Automation

MailchimpSMB

Email marketing and automation platforms

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

softwareheritage.org(19)piwik.inria.fr(1)

Website Identity

Software Heritage

Organization

info@softwareheritage.org

www.softwareheritage.org/

11 years old

Location detected: 🇫🇷 Francevia ip

Gandi SASen-US

Social Profiles

X (Twitter)LinkedIn YouTube GitHub Bluesky

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Last analyzed: 01 May 2026 at 17:08

Historical Analysis & Change Tracking