Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

serial.nl

Domain Default page

Page Load Speed

1.7 sec in total

First Response

361 ms

Resources Loaded

1.2 sec

Page Rendered

138 ms

serial.nl screenshot

About Website

Visit serial.nl now to see the best up-to-date Serial content for Netherlands and also check out these interesting facts you probably never knew about serial.nl

Visit serial.nl

Key Findings

We analyzed Serial.nl page load time and found that the first response time was 361 ms and then it took 1.3 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.

Performance Metrics

serial.nl performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.8 s

100/100

10%

LCP (Largest Contentful Paint)

Value0.9 s

100/100

25%

SI (Speed Index)

Value1.4 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value0.8 s

100/100

10%

Network Requests Diagram

serial.nl

361 ms

style.css

173 ms

promo-flags.js.php

284 ms

top-bottom.png

97 ms

panel-logo.png

99 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 95% of them (19 requests) were addressed to the original Serial.nl, 5% (1 request) were made to Promo.parallels.com. The less responsive or slowest element that took the longest time to load (435 ms) belongs to the original domain Serial.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 17.3 kB (21%)

Content Size

83.1 kB

After Optimization

65.7 kB

In fact, the total size of Serial.nl main page is 83.1 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 66.4 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 8.7 kB

  • Original 11.6 kB
  • After minification 10.0 kB
  • After compression 2.9 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 1.5 kB, which is 13% 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 8.7 kB or 75% of the original size.

Image Optimization

-8%

Potential reduce by 5.1 kB

  • Original 66.4 kB
  • After minification 61.3 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. Serial images are well optimized though.

JavaScript Optimization

-49%

Potential reduce by 152 B

  • Original 309 B
  • After minification 238 B
  • After compression 157 B

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 152 B or 49% of the original size.

CSS Optimization

-72%

Potential reduce by 3.4 kB

  • Original 4.7 kB
  • After minification 4.1 kB
  • After compression 1.4 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. Serial.nl needs all CSS files to be minified and compressed as it can save up to 3.4 kB or 72% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

18

After Optimization

18

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Serial. According to our analytics all requests are already optimized.

Accessibility Review

serial.nl accessibility score

100

Accessibility Issues

Best Practices

serial.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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

serial.nl SEO score

67

Search Engine Optimization Advices

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 Serial.nl 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 Serial.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 description is not detected on the main page of Serial. 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: