Tools & Wizards About Us
visindavefur.is screenshot

Report Summary

  • 81

    Performance

    Renders faster than
    86% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

visindavefur.is

Vísindavefurinn

Page Load Speed

4.7 sec in total

First Response

1.2 sec

Resources Loaded

3.2 sec

Page Rendered

175 ms

visindavefur.is screenshot

About Website

Click here to check amazing Visindavefur content for Netherlands. Otherwise, check out these important facts you probably never knew about visindavefur.is

Notendur senda spurningar, vísindamenn svara. Hefur þig ekki alltaf langað að vita hvers vegna himinninn ER blár?

Visit visindavefur.is

Key Findings

We analyzed Visindavefur.is page load time and found that the first response time was 1.2 sec and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

visindavefur.is performance score

81

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

83/100

10%

LCP (Largest Contentful Paint)

Value2.0 s

97/100

25%

SI (Speed Index)

Value4.2 s

77/100

10%

TBT (Total Blocking Time)

Value150 ms

94/100

30%

CLS (Cumulative Layout Shift)

Value0.19

64/100

15%

TTI (Time to Interactive)

Value9.0 s

34/100

10%

Network Requests Diagram

www.visindavefur.is

1247 ms

vv_styles.css

131 ms

jquery-2.2.4.min.js

390 ms

jquery.cookie.js

421 ms

jquery.waypoints.js

426 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that 79% of them (23 requests) were addressed to the original Visindavefur.is, 7% (2 requests) were made to Vefgreinir.hi.is and 7% (2 requests) were made to Connect.facebook.net. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Visindavefur.is.

Page Optimization Overview & Recommendations

Page size can be reduced by 106.3 kB (26%)

Content Size

413.0 kB

After Optimization

306.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Visindavefur.is main page is 413.0 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. 25% of websites need less resources to load. Images take 193.7 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 43.4 kB

  • Original 54.9 kB
  • After minification 47.3 kB
  • After compression 11.5 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 7.6 kB, which is 14% 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 43.4 kB or 79% of the original size.

Image Optimization

-6%

Potential reduce by 11.8 kB

  • Original 193.7 kB
  • After minification 182.0 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. Visindavefur images are well optimized though.

JavaScript Optimization

-31%

Potential reduce by 48.7 kB

  • Original 154.8 kB
  • After minification 154.8 kB
  • After compression 106.0 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 48.7 kB or 31% of the original size.

CSS Optimization

-25%

Potential reduce by 2.4 kB

  • Original 9.5 kB
  • After minification 9.5 kB
  • After compression 7.2 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. Visindavefur.is needs all CSS files to be minified and compressed as it can save up to 2.4 kB or 25% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (33%)

Requests Now

24

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Visindavefur. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.visindavefur.is

www.visindavefur.is

1247 ms

vv_styles.css

vv_styles.css

131 ms

jquery-2.2.4.min.js

jquery-2.2.4.min.js

390 ms

jquery.cookie.js

jquery.cookie.js

421 ms

jquery.waypoints.js

jquery.waypoints.js

426 ms

feather.js

feather.js

546 ms

mainweb-is.js

mainweb-is.js

429 ms

webReader.js

webReader.js

160 ms

piwik.js

piwik.js

936 ms

logo.svg

logo.svg

277 ms

icon-sun.svg

icon-sun.svg

375 ms

icon-moon.svg

icon-moon.svg

435 ms

icon-flood.svg

icon-flood.svg

435 ms

icon-tide.svg

icon-tide.svg

437 ms

STEM_Kristin.JPG

STEM_Kristin.JPG

802 ms

liechtenstein_300442_thumb_190w.jpg

liechtenstein_300442_thumb_190w.jpg

501 ms

sciday_benedict.jpg

sciday_benedict.jpg

529 ms

sciday_2016_130.jpg

sciday_2016_130.jpg

530 ms

bryndis_bjork_asgeirsdottir_smamynd_dagatal_300418.jpg

bryndis_bjork_asgeirsdottir_smamynd_dagatal_300418.jpg

657 ms

logo-small.svg

logo-small.svg

666 ms

Inter-Italic.woff

Inter-Italic.woff

886 ms

Inter-Regular.woff

Inter-Regular.woff

915 ms

Inter-Bold.woff

Inter-Bold.woff

1044 ms

Inter-Black.woff

Inter-Black.woff

1038 ms

all.js

all.js

24 ms

misc.php

misc.php

373 ms

all.js

all.js

5 ms

28 ms

piwik.php

piwik.php

397 ms

Accessibility Review

visindavefur.is accessibility score

91

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

visindavefur.is best practices score

75

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

Page has valid source maps

SEO Factors

visindavefur.is SEO score

100

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

Language and Encoding

  • Language Detected

    IS

  • Language Claimed

    IS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Visindavefur.is can be misinterpreted by Google and other search engines. Our service has detected that Icelandic is used on the page, and it matches the claimed language. Our system also found out that Visindavefur.is 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

visindavefur.is

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