StackOptic
Back to Search
nb.no favicon

nb.no

https://nb.no· First analyzed 26 Apr 2026· Updated 26 Apr 2026
Export
nb.no
Desktop screenshot of nb.no
Mobile screenshot of nb.no
Mobile

Sponsored

Hosting Provider

UNINETT

IP Address

158.39.129.53

Site Location

🇳🇴 Norwayvia phone

Server Location

🇳🇴 Mo i Rana, Norway

ASN

AS224

Organization

UNINETT

Server

Nginx

Nameservers

ns4.nb.no.nn.uninett.no.ns5.nb.no.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
844 ms10%
Speed Index
1.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3.3 MB
94 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms

Technology Stack

11 Technologies Detected

Analytics

4
Google Analytics
Google Analytics 4
Hotjar
Matomo

Plugins

3
WooCommerce
Yoast SEO
Gravity Forms

Libraries

1
jQueryv3.7.1

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

A82/100
25
6
1
Meta Tags9/15
Content10/12
Headings8/8
Technical25/25
E-E-A-T2/7
Images4/7
Links5/5
URL5/5
Social4/5
Freshness4/4
Mobile3/4
Indexability3/3
N
nb.nonb.no

Nasjonalbiblioteket | Norske bøker, aviser, tidsskrift og bilder på...

Nasjonalbiblioteket bevarer fortiden for fremtiden. Opplev samlingen i Nettbiblioteket eller gjennom kulturformidling på Solli plass i Oslo.

Title truncated.
Title Length72 chars

Recommended: 50-60 chars (~420px / 580px)

Description Length140 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (72 chars, ~420px). Will be truncated in search results.

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

17 URLs

17 sub-sitemaps

robots.txt

11 rules

Local SEO

Local Search Readiness

28/100
Needs Work
8 10

Sponsored

AI & LLM Readiness

D40/100
Bot Access
20/25
Machine Read.
1/25
Schema Data
8/25
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
Text ratio:6%
Words:3,379
Token eff.:Poor Structure

Structured Data

5 JSON-LD
Organization×1.1WebSiteBreadcrumbListSearchAction
sameAs entity links

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...
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.
B
75/100
12
Passed
3
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
8/20
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
11/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •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.
18/100
F
415 mg
CO₂e / view
3.3 MB
Page Weight
30%
Cleaner Than
New Visitor
474 mg
vs
Returning (cached)
237 mg
Annual (10K/mo)
49.8 kg
Emission Segments
Data Center
93 mg
Network
100 mg
Device
223 mg
Resource Breakdown
JavaScript
177.6 KB
Images
2.9 MB
CSS
207.0 KB
HTML
34.5 KB
Green Hosting Not Verified
UNINETT
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Interactive

HTTPS

No WAF

197d

Certificate Details

Type

Organization Validated (OV)

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/2

Valid From

10.11.2025

Valid Until

10.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

api.nb.nowebdata.nb.nodata.nb.noembed.beta.nb.nonettarkivet.beta.nb.nonb.nonbdcms.nb.noembed.nb.no+12 more

SHA-256 Fingerprint

23:05:64:40:A6:99:25:32:74:12:65:EF:67:25:4C:35:E2:86:AA:55...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-credentials
true
access-control-allow-origin
https://www.nb.no
content-encoding
📦 Gzip(gzip)
content-security-policy
frame-ancestors 'self' ai.nb.no tools.nb.no produksjon.nb.no...
content-type
text/html; charset=UTF-8
date
Sun, 26 Apr 2026 18:10:03 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

93

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

nb-no.mail.protection.outlook.com

Domain Information

nb.no

Domain Age
26y 5m

Created

14.11.1999

Last Updated

15.11.2025

Registrar

SIKT - KUNNSKAPSSEKTORENS TJENESTELEVERANDØR

DNSSEC
Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner
Cookiebot
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Cookiebot
Privacy policy page linked
Data Protection Officer mentioned
Legitimate interest basis mentioned

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.
B
74/100
Mobile Friendly30 breakpoints
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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

ClearfaceStd + Bureau Sans

WCAG AAA
84/100
Readability
/30
22/30

18px · LH 1.50

Hierarchy
/20
17/20

3.56x ratio · ✓ H1→H6

WCAG
/25
25/25

11.32:1 min contrast

Performance
/25
20/25

2 fonts · 3 req

Heading Font

ClearfaceStd

Sans64px

Body Font

Bureau Sans

Sans18px

Contrast Ratio

11.32:1

WCAG AAA (≥7:1)

Reading Comfort

~39 CPL

Narrow lines
64px
h1
64px
h2
18px
p
Minor Second
Scale

✅ Excellent readability: 18px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 18/100. Consider shorter sentences and simpler words.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 11.3:1).

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

✅ Strong hierarchy: Headlines are 3.6x larger than body text.

Buy on MyFontsFluid Type (rem)Flesch 18

Color Palette

5 unique colors
Light
#f4f4f4
Background· 28.8%
#e4dede
Primary· 43.8%
#927768
Secondary· 10.3%
#b5a8a2
Secondary· 8.9%
#42362c
Secondary· 8.3%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

3
Google Tag ManagerFree
Google AnalyticsFree
HotjarMid-Market

User behavior and product analytics

Privacy & Cookies

1
CookiebotMid-Market

Cookie consent and privacy compliance tools

2

Categories

4

Total Tools

0

Enterprise

2

Mid-Market

Assessment: Well-developed marketing technology stack

Sponsored

Scripts & Styles

30 Resources

20
Scripts
10
Styles
5
Async
6
Defer

Top Script Sources

nb.no(13)googletagmanager.com(3)consent.cookiebot.com(2)static.hotjar.com(1)consentcdn.cookiebot.com(1)

Website Identity

Nasjonalbiblioteket

Nasjonalbiblioteket

Organization

Nasjonalbiblioteket bevarer fortiden for fremtiden. Opplev samlingen i Nettbiblioteket eller gjennom kulturformidling på Solli plass i Oslo.

nb@nb.no
+4723276000
www.nb.no/
26 years old
Location detected: 🇳🇴 Norwayvia phone
SIKT - KUNNSKAPSSEKTORENS TJENESTELEVERANDØR📧 Microsoft 365nb-NO

Social Profiles

FacebookInstagram

Sponsored

Last analyzed: 26 Apr 2026 at 18:10

Historical Analysis & Change Tracking