Report Summary

  • 39

    Performance

    Renders faster than
    59% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

charts.org.nz

Charts

Page Load Speed

2 sec in total

First Response

562 ms

Resources Loaded

1.3 sec

Page Rendered

100 ms

charts.org.nz screenshot

About Website

Welcome to charts.org.nz homepage info - get ready to check Charts best content for New Zealand right away, or after learning these important things about charts.org.nz

NZ Charts Portal

Visit charts.org.nz

Key Findings

We analyzed Charts.org.nz page load time and found that the first response time was 562 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster. This domain responded with an error, which can significantly jeopardize Charts.org.nz rating and web reputation

Performance Metrics

charts.org.nz performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value7.7 s

3/100

25%

SI (Speed Index)

Value8.3 s

19/100

10%

TBT (Total Blocking Time)

Value570 ms

52/100

30%

CLS (Cumulative Layout Shift)

Value0.034

100/100

15%

TTI (Time to Interactive)

Value10.2 s

25/100

10%

Network Requests Diagram

charts.org.nz

562 ms

hitparade.css

229 ms

lukas_graham-7_years_s.jpg

326 ms

rihanna_feat_drake-work_s.jpg

323 ms

flume_feat_kai-never_be_like_you_s.jpg

335 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 29% of them (9 requests) were addressed to the original Charts.org.nz, 65% (20 requests) were made to Bern.hitparade.ch and 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (614 ms) relates to the external source Bern.hitparade.ch.

Page Optimization Overview & Recommendations

Page size can be reduced by 33.4 kB (37%)

Content Size

89.2 kB

After Optimization

55.8 kB

In fact, the total size of Charts.org.nz main page is 89.2 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Only 10% of websites need less resources to load. Images take 38.8 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 23.6 kB

  • Original 28.8 kB
  • After minification 28.7 kB
  • After compression 5.1 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 23.6 kB or 82% of the original size.

Image Optimization

-15%

Potential reduce by 5.8 kB

  • Original 38.8 kB
  • After minification 33.0 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Charts needs image optimization as it can save up to 5.8 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 34 B

  • Original 17.2 kB
  • After minification 17.2 kB
  • After compression 17.1 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. This website has mostly compressed JavaScripts.

CSS Optimization

-87%

Potential reduce by 3.9 kB

  • Original 4.5 kB
  • After minification 3.9 kB
  • After compression 583 B

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Charts.org.nz needs all CSS files to be minified and compressed as it can save up to 3.9 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (17%)

Requests Now

29

After Optimization

24

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Charts. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Accessibility Review

charts.org.nz accessibility score

88

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

charts.org.nz best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

charts.org.nz SEO score

75

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Charts.org.nz can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Charts.org.nz main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

Open Graph description is not detected on the main page of Charts. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: