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Certified Website Score for

ai51.de

ai51 is a German AI studio. NerdSip: AI learning in 10 min. model51: virtual try-on for fashion. smile51: AI headshots. talbi51: conversational AI that sells your products.

First audit: February 11, 2026•Last audit: June 17, 2026
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78
Overall
93Website Quality
42Trust & Security
98PageSpeed
Score trend

Latest audit — June 17, 2026

Deep, transparent insight into how this score is built: PageSpeed vitals, on‑page quality signals, and trust & security checks — all broken down into clear, verifiable items you can act on.

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Site Quality

Title
16/20
ai51 — AI Learning App, Virtual Try-On, AI Headshots & Sales AI
63 chars (ideal 30–60)
Meta Description
12/15
ai51 is a German AI studio. NerdSip: AI learning in 10 min. model51: virtual try-on for fashion. smile51: AI headshots. talbi51: conversational AI that sells your products.
172 chars (ideal 120–160)
Favicon
3/3
assets/favicon.png
present
Viewport meta
8/8
width=device-width, initial-scale=1
correct (width=device-width, initial-scale=1)
robots.txt
6/6
User-agent: * Allow: / Disallow: /impressum.html Sitemap: https://ai51.de/sitemap.xml
perfect (User-agent + Allow + Sitemap)
Sitemap
7/7
https://ai51.de/sitemap.xml
present
llms.txt
0/0
present
present
Headings
6/6
H1AI products for learning, fashion & careers — designed and built in Germany.
H2The AI learning app that fits your life.
H2The science of learning, powered by AI.
H3Microlearning
H3Spaced Repetition
H3Active Recall
H2Learn Smarter, Not Harder.
H3How to Get a Promotion at Work: The 1-Year Strategy
H3How to Make Small Talk: Complete Guide
H3How to Turn Your Commute Into Classroom
H2Transform any fashion store into a try-on studio.
H2Peek into the systems we run for the model51 platform.
H3Architecture tuned for high-volume catalogues.
H3A guided rollout for merch and engineering teams.
H3Built-in governance for people-first AI.
H2Field reports from the teams scaling virtual try-ons.
H3The 2025 VTO paradigm shift.
H3The 2025 guide to AI visual try-on.
H3Super edits & optimized imagery.
H2Turn any selfie into a boardroom-ready portrait.
H2From job seekers to executives—your image matters.
H3Job seekers
H3LinkedIn professionals
H3Speakers & consultants
H3HR & team pages
H2Any product. Real conversation. AI that sells.
H2From storefronts to trade shows—and everyone who wants to have fun.
H3E-commerce stores
H3Trade shows & kiosks
H3Marketing campaigns
H3Small businesses
H3Event butler mode
H2Valuable pages for every growing SaaS business.
H3postpire.com — SEO automation
H3landingboost.app — CRO fixes
H2Built with retailers and talent leaders in mind.
H3Made for real commerce
H3Ethics at the core
H3From pilot to scale
correct structure
Schema.org JSON-LD
2/2
Organization: ai51
1 schema found
Canonical URL
8/8
https://ai51.de/
present
HTML lang
4/4
en
present
Character encoding
4/4
utf-8
present

Open Graph

Title
3/3
ai51 — AI Products for Learning, Fashion & Careers
present
Description
3/3
German AI studio behind NerdSip (AI learning app), model51 (virtual try-on), smile51 (AI headshots) and talbi51 (conversational sales AI).
present
Image
3/3
Image preview
https://ai51.de/assets/ai51whitezoomed.png
present
URL
3/3
https://ai51.de/
present
Type
1/1
website
present

Twitter Cards

Card Type
1/1
summary_large_image
present
Title
1/1
ai51 — AI Products for Learning, Fashion & Careers
present
Description
1/1
German AI studio behind NerdSip (AI learning app), model51 (virtual try-on), smile51 (AI headshots) and talbi51 (conversational sales AI).
present
Image
1/1
Image preview
https://ai51.de/assets/ai51whitezoomed.png
present

Security Headers

HTTPS
30/30
HTTPS enabled
HTTP Strict Transport Security
0/15
missing (should be: Strict-Transport-Security: max-age=31536000; includeSubDomains)
Content Security Policy
0/15
missing (should be: Content-Security-Policy: default-src 'self')
Frame Protection
0/5
missing (should be: X-Frame-Options: SAMEORIGIN)
MIME Type Protection
5/5
X-Content-Type-Options: nosniff

Domain Trust

Domain Rating
7/25
How to improve DR→
DR 7
/100
1525
Domain Rating by Ahrefs
Domain Age
0/5
no domain age records found
Registrar
no registrar record found
Country
Unknown

Infrastructure

Provider
Cloudflare
93

Performance

100

SEO

100

Best Practices

96

Accessibility

Performance
93/100
Largest Contentful Paint
22/25
2.6s
2.5s4.0s
First Contentful Paint
7/10
2.6s
1.8s3.0s
Total Blocking Time
30/30
0ms
200ms400ms
Cumulative Layout Shift
25/25
0.00
0.100.25
Speed Index
10/10
2.6s
3.4s5.4s
SEO
100/100
Page isn’t blocked from indexing
31/31
Document has a `<title>` element
8/8
Document has a meta description
8/8
Page has successful HTTP status code
8/8
Links have descriptive text
8/8
Links are crawlable
8/8
robots.txt is valid
8/8
Image elements have `[alt]` attributes
8/8
Document has a valid `hreflang`
8/8
Document has a valid `rel=canonical`
8/8
Best Practices
100/100
Uses HTTPS
19/19
Avoids deprecated APIs
19/19
Avoids third-party cookies
19/19
Allows users to paste into input fields
12/12
Avoids requesting the geolocation permission on page load
4/4
Avoids requesting the notification permission on page load
4/4
Displays images with correct aspect ratio
4/4
Serves images with appropriate resolution
4/4
Page has the HTML doctype
4/4
Properly defines charset
4/4
No browser errors logged to the console
4/4
No issues in the `Issues` panel in Chrome Devtools
4/4
Accessibility
96/100
`[aria-*]` attributes match their roles
5/5
`[aria-hidden="true"]` is not present on the document `<body>`
5/5
`[role]`s have all required `[aria-*]` attributes
5/5
`[role]` values are valid
5/5
`[aria-*]` attributes have valid values
5/5
`[aria-*]` attributes are valid and not misspelled
5/5
Buttons have an accessible name
5/5
Image elements have `[alt]` attributes
5/5
Form elements have associated labels
5/5
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
5/5
ARIA attributes are used as specified for the element's role
4/4
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
4/4
`[aria-hidden="true"]` elements do not contain focusable descendents
4/4
Elements use only permitted ARIA attributes
4/4
Background and foreground colors have a sufficient contrast ratio
4/4
Document has a `<title>` element
4/4
`<html>` element has a `[lang]` attribute
4/4
`<html>` element has a valid value for its `[lang]` attribute
4/4
Links have a discernible name
4/4
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
4/4
List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
4/4
Touch targets do not have sufficient size or spacing.
0/4
Heading elements appear in a sequentially-descending order
2/2
Document has a main landmark.
2/2
Deprecated ARIA roles were not used
1/1
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