Tools & Wizards About Us

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

climatelevels.org

Climate Levels Graph: A project of the 2 Degrees Institute

Page Load Speed

1.5 sec in total

First Response

52 ms

Resources Loaded

1.4 sec

Page Rendered

52 ms

About Website

Click here to check amazing Climate Levels content. Otherwise, check out these important facts you probably never knew about climatelevels.org

Detailed & fully interactive climate level graphs featuring current and historical greenhouse gas levels, global temperature and sea levels. Customize and embed the graph on your website or blog for f...

Visit climatelevels.org

Key Findings

We analyzed Climatelevels.org page load time and found that the first response time was 52 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

climatelevels.org performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value20.1 s

0/100

25%

SI (Speed Index)

Value11.9 s

4/100

10%

TBT (Total Blocking Time)

Value2,310 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value21.2 s

1/100

10%

Network Requests Diagram

climatelevels.org

52 ms

climatelevels.org

267 ms

purecookie.css

236 ms

purecookie.js

244 ms

co2_group.php

358 ms

Our browser made a total of 17 requests to load all elements on the main page. We found that 71% of them (12 requests) were addressed to the original Climatelevels.org, 12% (2 requests) were made to Google-analytics.com and 6% (1 request) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (739 ms) belongs to the original domain Climatelevels.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 61.9 kB (32%)

Content Size

194.3 kB

After Optimization

132.4 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Climatelevels.org main page is 194.3 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. 25% of websites need less resources to load. Javascripts take 185.6 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 6.4 kB

  • Original 8.2 kB
  • After minification 8.1 kB
  • After compression 1.8 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 6.4 kB or 78% of the original size.

JavaScript Optimization

-30%

Potential reduce by 55.4 kB

  • Original 185.6 kB
  • After minification 185.5 kB
  • After compression 130.2 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 55.4 kB or 30% of the original size.

CSS Optimization

-17%

Potential reduce by 88 B

  • Original 508 B
  • After minification 508 B
  • After compression 420 B

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. Climatelevels.org needs all CSS files to be minified and compressed as it can save up to 88 B or 17% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (80%)

Requests Now

15

After Optimization

3

  • AJAX
  • JavaScript
  • CSS

The browser has sent 15 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Climate Levels. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

climatelevels.org accessibility score

73

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

climatelevels.org best practices score

58

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

climatelevels.org SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

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

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Climatelevels.org can be misinterpreted by Google and other search engines. Our service has detected that English 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 Climatelevels.org 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 data is detected on the main page of Climate Levels. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: