Audit results for nzz.ch

Results and Sub-scores

ECOS Score and Categories
URL
Date
ScoresTotal ECOS Score v151
Efficient29
Clean0
Open100
Safe73
ECOS Score Display51ECOS Score
Score results compared to audits in the ECOS database.
nzz.ch51
Average (arithmetic mean)67
Statistical distributionp9088
p7579
Median62
p2555
p1051
DatasetLast update6/15/26, 7:25 AM
Number of measurement points (n)700
Statistical distribution of audits5167

How is the score composed?

Visualization of the score composition and weighting of sub-indicators (relative values in brackets)

Composition of the ECOS ScoreECOS Score Display51Scores25%ECOS Score Display29Efficiency25%ECOS Score Display0Clean25%ECOS Score Display100Open25%ECOS Score Display73Safe40% (10%)ECOS Score Display36Performance30% (7.5%)ECOS Score Display50Best Practices30% (7.5%)ECOS Score Display0Network50% (12.5%)ECOS Score Display99Accessible50% (12.5%)ECOS Score Display100SEO50% (12.5%)ECOS Score Display100Trust50% (12.5%)ECOS Score Display45Secure50% (3.75%)ECOS Score Display0Requests50% (3.75%)ECOS Score Display0Data Weight50% (6.25%)ECOS Score Display100Webrisk50% (6.25%)ECOS Score Display100IP Check

Detailed tabular representation of the score calculation and source references for the sub-indicators.

IndexValueWeightingSub-indicators
Scores
51100%
IndexValueWeightingSub-indicators
Efficiency
2925%
IndexValueWeightingData Sources
Performance
3640% (10%)
Best Practices
5030% (7.5%)
Network
030% (7.5%)
IndexValueWeightingData Sources
Requests
050% (3.75%)
  • Relative score: Number of HTTP requests (compressed) is put in relation to data from all websites
  • PageSpeed API (Google) - Number of HTTP requests lighthouseResult.audits.network-requests.details.items[].transferSize
  • httparchive.org - Relative frequencies of websites by number of HTTP requests data (2024)
  • Web Audits/GitHub - create_subscore_requests
Data Weight
050% (3.75%)
  • Relative score: Size of transferred data (compressed) is put in relation to data from all websites
  • PageSpeed API (Google) - Transferred data by type lighthouseResult.audits.network-requests.details.items[].resourceSize
  • httparchive.org - Relative frequencies of websites by transferred data (2024)
  • Web Audits/GitHub - create_subscore_weight
Clean
025%
Open
10025%
IndexValueWeightingData Sources
Accessible
9950% (12.5%)
SEO
10050% (12.5%)
Safe
7325%
IndexValueWeightingSub-indicators
Trust
10050% (12.5%)
IndexValueWeightingData Sources
Webrisk
10050% (6.25%)
IP Check
10050% (6.25%)
  • AbuseIPDB - Checking if IP address is listed with malware or harmful practices
Secure
4550% (12.5%)

API Sources & Independent Tests

This audit relies heavily on the following APIs. You can run these tests separately here:

Rating Categories

Efficient: Performance & Resources

The Efficient category evaluates how fast and resource-friendly a website works. A high score signals short loading times and a clean technical foundation.

The sub-score is primarily based on Lighthouse metrics for Performance and Best Practices. Additionally, relative benchmarking is performed: transferred data volume and the number of server requests are put in relation to current average values from the HTTP Archive database. This accurately measures how efficiently the site performs compared to global web standards.

Lower CPU load is a side effect — the direct benefit is a better experience for every visitor.

ECOS Score Display29Efficiency
Score results compared to audits in the ECOS database.
nzz.ch29
Average (arithmetic mean)69
Statistical distributionp9096
p7584
Median69
p2555
p1044
DatasetLast update6/15/26, 7:25 AM
Number of measurement points (n)700
Statistical distribution of audits2969

Performance

The Performance score evaluates the speed at which content is loaded and becomes interactive. It analyzes metrics such as the Largest Contentful Paint (LCP) and responsiveness. High performance saves time and reduces battery and CPU load on the user's device.

ECOS Score Display36Performance

Best Practices

This indicator checks compliance with modern web standards. This includes security aspects, correct image formats, and the avoidance of outdated technologies. Following best practices is the foundation for an efficient and maintainable web architecture.

ECOS Score Display50Best Practices

Data Transfer

Here, the data load is evaluated in comparison to the global average (HTTP Archive). The total size of transferred bytes and the number of server requests are measured. Less data traffic means less energy consumption and faster loading times worldwide.

ECOS Score Display0Network

Number of Requests

Every requested file creates communication overhead between the browser and the server. We put the total number of requests in relation to the median of the HTTP Archive database. Fewer requests mean less overhead and a faster-loading page, especially on slow or unstable connections.

ECOS Score Display0Requests

Number of Requests
nzz.ch
179
Statistical distributionp90162
p75103
Median62
p2537
p1022
DataTime2024
Device TypeMobile
Homepage (root page)
Sources
Benchmark vs. HTTP Archive179
HTTP Requests by resource type and origin
HTTP RequestsShare
Data Type
Script5329.61%
Images2715.08%
Document2513.97%
Other6134.08%
Fonts52.79%
Style84.47%
Media00%
Total179100%
Origin
Third Party12167.6%
Self5832.4%
Number of requests by file typeScript (29.61%)Images (15.08%)Document (13.97%)Other (34.08%)Fonts (2.79%)Style (4.47%)Media (0%)Third Party (67.6%)Self (32.4%)
Transferred Data Volume

The total size of the website in kilobytes is measured. This value is compared with average values from millions of websites (HTTP Archive). A low data load saves bandwidth for the user and reduces the energy required for global data transfer.

ECOS Score Display0Data Weight

Data Transfer (in kb)
nzz.ch
9857
Statistical distributionp905375.41
p752854.1
Median1601.31
p25881.63
p10460.53
DataTime2024-06-01
Device TypeMobile
Homepage (root page)
Sources
Benchmark vs. HTTP Archive9857
Data volume type and origin
Data volume (kb)Share
Data Type
Script204370.09%
Images2699.23%
Document2197.51%
Other1766.04%
Fonts1404.8%
Style682.33%
Media00%
Total2915100%
Origin
Third Party129644.46%
Self161955.54%
Data volume by file typeScript (70.09%)Images (9.23%)Document (7.51%)Other (6.04%)Fonts (4.8%)Style (2.33%)Media (0%)Third Party (44.46%)Self (55.54%)

Clean: Ecological Footprint

The Clean area measures the ecological sustainability of digital operations. The focus is on the CO2 balance resulting from hosting and data transfer.

The calculation is performed using the co2.js library and considers two essential factors: the estimated energy consumption per page view and the share of renewable energy in the power grid of the respective server location (Grid Intensity).

A high score shows that the website is operated with minimal CO2 emissions and relies on environmentally friendly infrastructure. This makes the hidden environmental impact of digital products visible and measurable.

ECOS Score Display0Clean
Score results compared to audits in the ECOS database.
nzz.ch0
Average (arithmetic mean)37
Statistical distributionp9099
p7575
Median25
p250
p100
DatasetLast update6/15/26, 7:25 AM
Number of measurement points (n)603
Statistical distribution of audits037

CO2 Emissions

Greencheck API Results
Sub-areaIndexValue
CO₂How high are the CO₂ emissions of nzz.ch?1038.33g CO₂ per 1,000 page views.
CO2.js (Green Web Foundation) rating of nzz.chF
Energy sourceDoes the hosting provider of nzz.ch use renewable energy?Yes
Documents

Open: Accessibility and Discoverability

The Open category evaluates how accessible and discoverable a website is for both humans and machines. Transparent structures and open standards are the decisive criteria here.

The score consists of two central Lighthouse audits: Accessibility and SEO. A high value guarantees that content is fully usable for people with disabilities and that technical hurdles do not hinder visibility in search engines.

This supports an inclusive web where content is equally accessible to all users and technologies.

ECOS Score Display100Open
Score results compared to audits in the ECOS database.
nzz.ch100
Average (arithmetic mean)91
Statistical distributionp90100
p7597
Median93
p2587
p1081
DatasetLast update6/15/26, 7:25 AM
Number of measurement points (n)700
Statistical distribution of audits10091

Accessibility

This score indicates how usable a website is for people with disabilities. Aspects such as contrast ratios, screen reader compatibility, and logical structures are evaluated. An accessible web excludes no one through technical barriers.

ECOS Score Display99Accessible

SEO

The SEO score checks technical discoverability by search engines. It ensures that content can be correctly indexed and that metadata is present. Good SEO makes information findable for the people who are looking for it.

ECOS Score Display100SEO

Safe

The Safe score evaluates the technical integrity and reputation of a website. It combines infrastructure checks from AbuseIPDB and Google Web Risk with a security header audit from the MDN HTTP Observatory. This covers both the server's reputation and the implementation of modern encryption and protection standards.

ECOS Score Display73Safe
Score results compared to audits in the ECOS database.
nzz.ch73
Average (arithmetic mean)74
Statistical distributionp9090
p7585
Median73
p2563
p1060
DatasetLast update6/15/26, 7:25 AM
Number of measurement points (n)700
Statistical distribution of audits7374

Trust & Reputation

The integrity of the domain is checked against global databases such as Google Webrisk and AbuseIPDB. This ensures that the site is not known for malware, phishing, or fraudulent activities. This forms the essential basis for digital trust.

ECOS Score Display100Trust

Google Web Risk

This indicator matches the URL against Google's lists of dangerous web resources. It checks whether the site is known for phishing, social engineering, or the distribution of malware. A clean result confirms that visitors are not exposed to malicious content.

ECOS Score Display100Webrisk

AbuseIPDB Check

Here, the reputation of the server IP is checked. AbuseIPDB collects reports on malicious activities such as spam or DDoS attacks. A clean score confirms that the website's hosting environment is not associated with criminal activities.

ECOS Score Display100IP Check

Mozilla HTTP Observatory

The MDN HTTP Observatory is an analysis tool by Mozilla designed to evaluate a website's security header configuration. It helps developers correctly implement modern security standards like CSP, HSTS, and CORS to mitigate risks such as cross-site scripting and clickjacking. (HTTP Observatory Scoring Methodology)

ECOS Score Display45Secure

HTTP Observatory Results
HTTP Observatory Score45/100
HTTP Observatory GradeC-
TestsPassed4
Failed4
HTTP Observatory Tests
TestPassedModifierResultDescription
Content Security Policy-25csp-not-implementedContent Security Policy (CSP) header not implemented
Strict Transport Security-20hsts-not-implementedHTTP Strict Transport Security (HSTS) header not implemented
Content Type Protection0x-content-type-options-nosniffX-Content-Type-Options header set to 'nosniff'
Clickjacking Protection0x-frame-options-implementedX-Frame-Options header properly implemented
Referrer Policy-5referrer-policy-not-implementedReferrer-Policy header not implemented
Cookie Security-5cookies-without-samesite-flagCookies set without SameSite flag
Cross-Origin Sharing0cross-origin-resource-sharing-not-implementedContent is not visible via CORS
HTTPS Redirection0redirection-all-httpsSite uses HTTPS

CrUX Reports: Real User Experience

The CrUX Reports (Chrome User Experience Report) provide valuable insights into the actual performance of a website from the perspective of real users worldwide.

Unlike lab tests, this data reflects real conditions: varying hardware, network speeds, and browser configurations. Since these metrics are a key ranking factor for Google, they show immediately how the website performs in the everyday life of visitors.

The analysis is carried out on two levels to evaluate both the specific subpage and the quality of the entire domain (Origin).

CrUX Page

This indicator shows performance data for the exact URL tested. It provides information on how specific content and functions of this individual page are experienced by real users in everyday life. This is useful for checking whether improvements to a specific page have had the expected effect.

CrUX results
IndicatorScore (CrUX)Score (linear)ValueDistribution (CrUX API)
OverallSLOW68
Cumulative Layout Shift (value)slow2845CrUX Performance Distribution0.000.100.200.300.400.500.60Percentile010203040ms
Experimental Time to First Bytefast95502CrUX Performance Distribution0.00.20.40.60.8Percentile05001000150020002500ms
First Contentful Paint (in ms)fast951177CrUX Performance Distribution0.00.20.40.60.8Percentile01000200030004000ms
Interaction to Next Paintfast96129CrUX Performance Distribution0.00.20.40.60.8Percentile0200400600ms
Largest Contentful Paint (in ms)fast951521CrUX Performance Distribution0.00.20.40.60.8Percentile0100020003000400050006000ms

CrUX Origin

The Origin score aggregates user experience data across the entire domain. This provides a comprehensive overall picture of the technical quality of the website infrastructure. It helps determine whether performance issues affect the whole site or only specific pages.

CrUX results
IndicatorScore (CrUX)Score (linear)ValueDistribution (CrUX API)
OverallAVERAGE77
Cumulative Layout Shift (value)average7713CrUX Performance Distribution0.00.20.40.60.8Percentile0102030ms
Experimental Time to First Bytefast97441CrUX Performance Distribution0.00.20.40.60.81.0Percentile05001000150020002500ms
First Contentful Paint (in ms)fast961154CrUX Performance Distribution0.00.20.40.60.8Percentile01000200030004000ms
Interaction to Next Paintfast96107CrUX Performance Distribution0.00.20.40.60.81.0Percentile0200400600ms
Largest Contentful Paint (in ms)fast951636CrUX Performance Distribution0.00.20.40.60.8Percentile0100020003000400050006000ms

Past Audit Data

Summary
Average51
Number of Audits1

Q & A: Interpretation of Results

How does nzz.ch score in the ECOS audit, and how does it compare to other websites?
With a score of 51/100, the result is in the bottom 25% of audited websites.
How efficient is nzz.ch in terms of loading speed and data transfer?
The score is 29/100, placing it in the lowest 10% of audits performed.
How secure is nzz.ch, and how does it compare to other websites?
The result is above the median of the comparison values. The score is 73/100.
How accessible and discoverable is nzz.ch for users and search engines?
With a score of 100/100, the result is in the top 10% of examined websites.
What is the carbon footprint of nzz.ch, and how clean is it compared to other sites?
The ECOS score is 0/100. The result is in the lower half of the examined websites.

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Raw Data Downloads for nzz.ch

Download raw audit data and ECOS statistics as JSON.

Data can also be accessed programmatically via the REST API. Details can be found in the documentation.

  • Basic Audit Scores: Compact JSON response with the 5 main scores.
  • Full Audit Detail: Detailed analysis results including all technical individual checks.
  • Audit History: Temporal development of scores across all previous measurements.
  • ECOS Benchmark Statistics: Descriptive statistics and percentile distribution of the entire ECOS database.

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