Tools & Wizards About Us
polderpv.nl screenshot

Report Summary

  • 80

    Performance

    Renders faster than
    86% of other websites

  • 51

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

polderpv.nl

Polder PV - detail analyses van de zonnestroom markt

Page Load Speed

2.9 sec in total

First Response

493 ms

Resources Loaded

1.7 sec

Page Rendered

728 ms

polderpv.nl screenshot

About Website

Visit polderpv.nl now to see the best up-to-date Polder PV content and also check out these interesting facts you probably never knew about polderpv.nl

Continuous monitoring of 1336 Wp PV-system with OK4 inverters on roof of housing association, Leiden, Netherlands. Detailed analysis of developments in the solar market, in particular Europe.

Visit polderpv.nl

Key Findings

We analyzed Polderpv.nl page load time and found that the first response time was 493 ms and then it took 2.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

polderpv.nl performance score

80

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.5 s

95/100

10%

LCP (Largest Contentful Paint)

Value2.2 s

95/100

25%

SI (Speed Index)

Value3.1 s

93/100

10%

TBT (Total Blocking Time)

Value660 ms

45/100

30%

CLS (Cumulative Layout Shift)

Value0.009

100/100

15%

TTI (Time to Interactive)

Value4.2 s

85/100

10%

Network Requests Diagram

polderpv.nl

493 ms

widgets.js

78 ms

4x93Wp190x122.jpg

401 ms

banner_594x122octree.gif

399 ms

Logo_40blk.gif

16 ms

Our browser made a total of 27 requests to load all elements on the main page. We found that 70% of them (19 requests) were addressed to the original Polderpv.nl, 11% (3 requests) were made to Platform.twitter.com and 4% (1 request) were made to Google.com. The less responsive or slowest element that took the longest time to load (938 ms) relates to the external source Top50-solar.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 65.5 kB (35%)

Content Size

184.9 kB

After Optimization

119.4 kB

  • HTML
  • Images

In fact, the total size of Polderpv.nl main page is 184.9 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. 20% of websites need less resources to load. Images take 102.7 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 62.8 kB

  • Original 82.2 kB
  • After minification 68.6 kB
  • After compression 19.4 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 13.6 kB, which is 17% 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 62.8 kB or 76% of the original size.

Image Optimization

-3%

Potential reduce by 2.7 kB

  • Original 102.7 kB
  • After minification 100.0 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. Polder PV images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

25

After Optimization

25

  • AJAX
  • Images
  • JavaScript

The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Polder PV. According to our analytics all requests are already optimized.

Network Requests Diagram

polderpv.nl

polderpv.nl

493 ms

widgets.js

widgets.js

78 ms

4x93Wp190x122.jpg

4x93Wp190x122.jpg

401 ms

banner_594x122octree.gif

banner_594x122octree.gif

399 ms

Logo_40blk.gif

Logo_40blk.gif

16 ms

banner1-1.gif

banner1-1.gif

779 ms

button.php

button.php

346 ms

cry.gif

cry.gif

181 ms

nonukes_actie_april2011_small.gif

nonukes_actie_april2011_small.gif

291 ms

IQ_banner.jpg

IQ_banner.jpg

302 ms

airy2_homepage.jpg

airy2_homepage.jpg

608 ms

bonk.gif

bonk.gif

262 ms

Website30okt04.gif

Website30okt04.gif

361 ms

Photovoltaikforum.gif

Photovoltaikforum.gif

370 ms

PV_resources_banner400x40.gif

PV_resources_banner400x40.gif

371 ms

logo_newenergytv.gif

logo_newenergytv.gif

381 ms

spacer.gif

spacer.gif

400 ms

KNMI_logo.gif

KNMI_logo.gif

457 ms

atoomenergie_animatie.gif

atoomenergie_animatie.gif

561 ms

emailsymbol.gif

emailsymbol.gif

396 ms

lieb046.gif

lieb046.gif

405 ms

button.0308b81ff1714e446f674b5b9793f2cd.js

button.0308b81ff1714e446f674b5b9793f2cd.js

143 ms

frown.gif

frown.gif

413 ms

wink.gif

wink.gif

463 ms

follow_button.b9740740e0bcf9b0657c5b11bd4388da.en.html

follow_button.b9740740e0bcf9b0657c5b11bd4388da.en.html

40 ms

nl

nl

938 ms

jot

jot

76 ms

Accessibility Review

polderpv.nl accessibility score

51

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

polderpv.nl best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

polderpv.nl SEO score

67

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    NL

  • 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 Polderpv.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch 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 Polderpv.nl 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

polderpv.nl

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