Report Summary

  • 4

    Performance

    Renders faster than
    20% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

rtc.co.nz

Regent Training Centre - free course for 16 -19 year olds

Page Load Speed

10.5 sec in total

First Response

611 ms

Resources Loaded

8.8 sec

Page Rendered

993 ms

rtc.co.nz screenshot

About Website

Welcome to rtc.co.nz homepage info - get ready to check Rtc best content right away, or after learning these important things about rtc.co.nz

Regent Training Centre, are not bound by old fashioned teaching methods, courses are FREE to 16-19 year olds! start your higher learning and employment today.

Visit rtc.co.nz

Key Findings

We analyzed Rtc.co.nz page load time and found that the first response time was 611 ms and then it took 9.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

rtc.co.nz performance score

4

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.8 s

0/100

10%

LCP (Largest Contentful Paint)

Value28.2 s

0/100

25%

SI (Speed Index)

Value17.6 s

0/100

10%

TBT (Total Blocking Time)

Value1,980 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.557

13/100

15%

TTI (Time to Interactive)

Value24.3 s

0/100

10%

Network Requests Diagram

rtc.co.nz

611 ms

rtc.co.nz

1243 ms

gtm.js

61 ms

js

165 ms

fbevents.js

29 ms

Our browser made a total of 146 requests to load all elements on the main page. We found that 87% of them (127 requests) were addressed to the original Rtc.co.nz, 3% (4 requests) were made to Fonts.gstatic.com and 2% (3 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (3.6 sec) belongs to the original domain Rtc.co.nz.

Page Optimization Overview & Recommendations

Page size can be reduced by 10.7 MB (71%)

Content Size

15.0 MB

After Optimization

4.3 MB

In fact, the total size of Rtc.co.nz main page is 15.0 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 14.0 MB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 60.2 kB

  • Original 85.9 kB
  • After minification 75.6 kB
  • After compression 25.7 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. This page needs HTML code to be minified as it can gain 10.3 kB, which is 12% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 60.2 kB or 70% of the original size.

Image Optimization

-75%

Potential reduce by 10.5 MB

  • Original 14.0 MB
  • After minification 3.5 MB

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, Rtc needs image optimization as it can save up to 10.5 MB or 75% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-13%

Potential reduce by 97.4 kB

  • Original 772.8 kB
  • After minification 772.5 kB
  • After compression 675.4 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 97.4 kB or 13% of the original size.

CSS Optimization

-17%

Potential reduce by 23.8 kB

  • Original 136.4 kB
  • After minification 136.4 kB
  • After compression 112.6 kB

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. Rtc.co.nz needs all CSS files to be minified and compressed as it can save up to 23.8 kB or 17% of the original size.

Requests Breakdown

Number of requests can be reduced by 86 (64%)

Requests Now

135

After Optimization

49

The browser has sent 135 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rtc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 60 to 1 for JavaScripts and from 28 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

rtc.co.nz accessibility score

94

Accessibility Issues

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

Links do not have a discernible name

Best Practices

rtc.co.nz best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

rtc.co.nz SEO score

82

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

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rtc.co.nz can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Rtc.co.nz main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

Open Graph description is not detected on the main page of Rtc. 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: