Tools & Wizards About Us
delft.symbaloo.com screenshot

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

delft.symbaloo.com

Delft @ Symbaloo: Bookmarks & Favorites - The #1 Homepage for Educators

Page Load Speed

1.5 sec in total

First Response

414 ms

Resources Loaded

1.1 sec

Page Rendered

56 ms

delft.symbaloo.com screenshot

About Website

Visit delft.symbaloo.com now to see the best up-to-date Delft Symbaloo content for India and also check out these interesting facts you probably never knew about delft.symbaloo.com

Delft is bekend van haar mooie kanalen en historie. Vind meer info over Delft in deze webspace. @

Visit delft.symbaloo.com

Key Findings

We analyzed Delft.symbaloo.com page load time and found that the first response time was 414 ms and then it took 1.1 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

delft.symbaloo.com performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value18.8 s

0/100

25%

SI (Speed Index)

Value13.7 s

1/100

10%

TBT (Total Blocking Time)

Value4,830 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.24

52/100

15%

TTI (Time to Interactive)

Value31.9 s

0/100

10%

Network Requests Diagram

delft.symbaloo.com

414 ms

quantcast.choice.js

374 ms

workspaceHome.4571ea0fec43cb9fdfa6.js

381 ms

fsHomepage.js

380 ms

pubfig.min.js

32 ms

Our browser made a total of 5 requests to load all elements on the main page. We found that 20% of them (1 request) were addressed to the original Delft.symbaloo.com, 60% (3 requests) were made to Cdn01.symbaloo.com and 20% (1 request) were made to A.pub.network. The less responsive or slowest element that took the longest time to load (414 ms) belongs to the original domain Delft.symbaloo.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 5.9 kB (3%)

Content Size

189.3 kB

After Optimization

183.5 kB

  • HTML
  • JavaScript

In fact, the total size of Delft.symbaloo.com main page is 189.3 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 5% of websites need less resources to load. Javascripts take 183.9 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 3.9 kB

  • Original 5.5 kB
  • After minification 4.7 kB
  • After compression 1.6 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 764 B, 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 3.9 kB or 71% of the original size.

JavaScript Optimization

-1%

Potential reduce by 2.0 kB

  • Original 183.9 kB
  • After minification 183.9 kB
  • After compression 181.9 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 3 (75%)

Requests Now

4

After Optimization

1

  • JavaScript

The browser has sent 4 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Delft Symbaloo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

delft.symbaloo.com

delft.symbaloo.com

414 ms

quantcast.choice.js

quantcast.choice.js

374 ms

workspaceHome.4571ea0fec43cb9fdfa6.js

workspaceHome.4571ea0fec43cb9fdfa6.js

381 ms

fsHomepage.js

fsHomepage.js

380 ms

pubfig.min.js

pubfig.min.js

32 ms

Accessibility Review

delft.symbaloo.com accessibility score

79

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-*] attributes do not have valid values

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

delft.symbaloo.com 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

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

delft.symbaloo.com SEO score

92

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 doesn't use legible font sizes

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Delft.symbaloo.com can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it does not match the claimed English language. Our system also found out that Delft.symbaloo.com 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

delft.symbaloo.com

Open Graph data is detected on the main page of Delft Symbaloo. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: