Access lehrfilme.eu. Klimaforschung: Klimaerwärmung nicht durch Industrieabgase !?

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

53/100

10%

LCP (Largest Contentful Paint)

Value6.7 s

8/100

25%

SI (Speed Index)

Value8.1 s

21/100

10%

TBT (Total Blocking Time)

Value3,180 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.257

48/100

15%

TTI (Time to Interactive)

Value20.1 s

2/100

10%

lehrfilme.eu

1244 ms

show_afs_search.js

15 ms

videomeld.gif

542 ms

Flaggen_USA.jpg

644 ms

link-pfeil.jpg

631 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 35% of them (32 requests) were addressed to the original Lehrfilme.eu, 46% (42 requests) were made to Klimaforschung.net and 5% (5 requests) were made to Poolalarm.de. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Lehrfilme.eu.

Content Size

903.2 kB

After Optimization

642.3 kB

In fact, the total size of Lehrfilme.eu main page is 903.2 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. 35% of websites need less resources to load. Images take 605.7 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 241.6 kB

Original 285.4 kB
After minification 235.1 kB
After compression 43.8 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 50.3 kB, which is 18% 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 241.6 kB or 85% of the original size.

Image Optimization

-2%

Potential reduce by 13.9 kB

Original 605.7 kB
After minification 591.8 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. Lehrfilme images are well optimized though.

JavaScript Optimization

-45%

Potential reduce by 5.5 kB

Original 12.2 kB
After minification 11.6 kB
After compression 6.7 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 5.5 kB or 45% of the original size.

Requests Now

After Optimization

The browser has sent 90 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lehrfilme. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Accessibility Issues

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.

High

[aria-*] attributes do not match their roles

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

[id] attributes on active, focusable elements are not unique

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.

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

High

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

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

High

Browser errors were logged to the console

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

High

Document uses plugins

Language and Encoding

Language Detected

DE
Language Claimed

DE
Encoding

WINDOWS-1252

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lehrfilme.eu can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it matches the claimed language. Our system also found out that Lehrfilme.eu main page’s claimed encoding is windows-1252. 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

lehrfilme.eu

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Klimaforschung: Klimaerwärmung nicht durch Industrieabgase !?

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

lehrfilme.eu

show_afs_search.js

videomeld.gif

Flaggen_USA.jpg

link-pfeil.jpg

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

lehrfilme.eu

show_afs_search.js

videomeld.gif

Flaggen_USA.jpg

link-pfeil.jpg

poolalarm.gif

pet-flaschen_kl.jpg

germany-news.jpg

klima-news-logo.jpg

kuenstlicher-duenger-logo.jpg

facebook.gif

twitter.gif

leseproben.gif

forschung.gif

burnoutforschung.gif

lumbago_logo.jpg

wissen.gif

Dynamopark-Gibraltar-6.jpg

kolbatz-physik-poolalarm-logo.jpg

videomeld.gif

wissen-news.jpg

research-by-kolbatz-logo.jpg

japan-insel-versinkt_colage_kl.jpg

space-shuttle_kl.jpg

das-haarp-prokekt-kl-tranz.png

apokalypse_rangfolge.jpg

pandemie-apokalypse_kl.jpg

research-logo.jpg

wissen_flash.jpg

bundestagswahl-logo.jpg

apokalypse_religion.jpg

praedestination.jpg

VRweb_Button_03_de.png

hochfr1.gif

burnout-leseprobe_kino_kl.jpg

dwsz-flags-kl.jpg

dwsz-flags-bookmaks.jpg

VRweb_Button_03_de.png

fdj-dwsz.gif

buecher.gif

weltfinanzsystem.gif

facebook.gif

klimaforschung.gif

messung_kl.jpg