Tools & Wizards About Us

Report Summary

  • 38

    Performance

    Renders faster than
    57% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

tres.nl

Klantportalen, websites en digital marketing | TRES. Be digital.

Page Load Speed

5.1 sec in total

First Response

392 ms

Resources Loaded

4.1 sec

Page Rendered

590 ms

About Website

Welcome to tres.nl homepage info - get ready to check TRES best content for Netherlands right away, or after learning these important things about tres.nl

Wij zijn TRES. Digitaal bureau voor klantportalen, websites en digital marketing. Wij creëren digitale oplossingen voor jouw klanten. Samen met jou.

Visit tres.nl

Key Findings

We analyzed Tres.nl page load time and found that the first response time was 392 ms and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

tres.nl performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

40/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

32/100

25%

SI (Speed Index)

Value5.8 s

50/100

10%

TBT (Total Blocking Time)

Value1,390 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value12.3 s

15/100

10%

Network Requests Diagram

tres.nl

392 ms

tres.nl

891 ms

style.css

395 ms

uc.js

20 ms

uMarketingSuite.analytics.js

197 ms

Our browser made a total of 132 requests to load all elements on the main page. We found that 86% of them (113 requests) were addressed to the original Tres.nl, 3% (4 requests) were made to Pixel-geo.prfct.co and 2% (3 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Tres.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.7 MB (25%)

Content Size

6.6 MB

After Optimization

5.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tres.nl main page is 6.6 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 6.1 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 177.1 kB

  • Original 222.6 kB
  • After minification 197.8 kB
  • After compression 45.5 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 24.8 kB, which is 11% 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 177.1 kB or 80% of the original size.

Image Optimization

-22%

Potential reduce by 1.4 MB

  • Original 6.1 MB
  • After minification 4.7 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, TRES needs image optimization as it can save up to 1.4 MB or 22% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-49%

Potential reduce by 113.2 kB

  • Original 231.2 kB
  • After minification 231.2 kB
  • After compression 118.1 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 113.2 kB or 49% of the original size.

CSS Optimization

-31%

Potential reduce by 20.9 kB

  • Original 66.4 kB
  • After minification 66.4 kB
  • After compression 45.6 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. Tres.nl needs all CSS files to be minified and compressed as it can save up to 20.9 kB or 31% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (16%)

Requests Now

122

After Optimization

102

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 122 CSS, Javascripts, AJAX and image requests in order to completely render the main page of TRES. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

tres.nl accessibility score

93

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

Links do not have a discernible name

Best Practices

tres.nl best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

tres.nl SEO score

98

Search Engine Optimization Advices

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

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tres.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it matches the claimed language. Our system also found out that Tres.nl 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 data is detected on the main page of TRES. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: