3.9 sec in total
169 ms
3.5 sec
187 ms
Click here to check amazing Berkeley Earth Lbl content for United States. Otherwise, check out these important facts you probably never knew about berkeleyearth.lbl.gov
Berkeley Earth is the only source of reliable, independent, non-governmental, and unbiased scientific data and analysis of the highest quality.
Visit berkeleyearth.lbl.govWe analyzed Berkeleyearth.lbl.gov page load time and found that the first response time was 169 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
berkeleyearth.lbl.gov performance score
name
value
score
weighting
Value5.8 s
5/100
10%
Value11.6 s
0/100
25%
Value11.1 s
6/100
10%
Value1,020 ms
26/100
30%
Value0.162
72/100
15%
Value13.6 s
11/100
10%
169 ms
1339 ms
24 ms
36 ms
330 ms
Our browser made a total of 63 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Berkeleyearth.lbl.gov, 35% (22 requests) were made to Berkeleyearth.org and 25% (16 requests) were made to Static.berkeleyearth.org. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Berkeleyearth.org.
Page size can be reduced by 512.5 kB (38%)
1.4 MB
843.4 kB
In fact, the total size of Berkeleyearth.lbl.gov main page is 1.4 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. Images take 649.2 kB which makes up the majority of the site volume.
Potential reduce by 50.1 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 50.1 kB or 80% of the original size.
Potential reduce by 13.8 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. Berkeley Earth Lbl images are well optimized though.
Potential reduce by 266.4 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 266.4 kB or 63% of the original size.
Potential reduce by 182.2 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. Berkeleyearth.lbl.gov needs all CSS files to be minified and compressed as it can save up to 182.2 kB or 83% of the original size.
Number of requests can be reduced by 40 (71%)
56
16
The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Berkeley Earth Lbl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.
berkeleyearth.lbl.gov
169 ms
berkeleyearth.org
1339 ms
css
24 ms
css
36 ms
wp-emoji-release.min.js
330 ms
bwg_frontend.css
240 ms
sumoselect.css
241 ms
font-awesome.css
333 ms
jquery.mCustomScrollbar.css
243 ms
flexslider.css
251 ms
all.min.css
480 ms
jplayer.blue-monday2.css
252 ms
style.css
240 ms
jquery.js
456 ms
jquery-migrate.min.js
245 ms
bwg_frontend.js
275 ms
jquery.sumoselect.min.js
309 ms
jquery.mobile.js
310 ms
jquery.mCustomScrollbar.concat.min.js
311 ms
jquery.fullscreen-0.4.1.js
312 ms
bwg_gallery_box.js
347 ms
jscripts.php
412 ms
jquery.flexslider-min.js
149 ms
bootstrap.js
235 ms
plugins.js
146 ms
jquery.jplayer.min.js
376 ms
jplayer.playlist.min.js
146 ms
scripts.js
180 ms
jscripts-ftr-min.js
182 ms
analytics.js
158 ms
map-excerpt.png
442 ms
earth-home.jpg
240 ms
generic-line-graph.jpg
442 ms
dot-world-map.jpg
328 ms
berkeley-earth-logo-1.png
184 ms
bullet-blue.png
159 ms
magnifying-glass.png
161 ms
twitter.png
160 ms
facebook.png
162 ms
linked-in.png
163 ms
youtube.png
183 ms
all.js
277 ms
cse.js
112 ms
MViwy4K6e56oHcyeMzjbCQ.ttf
36 ms
collect
44 ms
cse.js
60 ms
collect
38 ms
flexslider-icon.woff
95 ms
collect
75 ms
jsapi
33 ms
default+en.css
6 ms
default.css
17 ms
default+en.I.js
24 ms
default.css
42 ms
async-ads.js
108 ms
google_custom_search_watermark.gif
57 ms
small-logo.png
84 ms
search_box_icon.png
82 ms
clear.png
85 ms
nav_logo114.png
89 ms
94 ms
xd_arbiter.php
238 ms
xd_arbiter.php
436 ms
berkeleyearth.lbl.gov accessibility score
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
Buttons do not have an accessible name
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
Heading elements are not in a sequentially-descending order
berkeleyearth.lbl.gov best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
berkeleyearth.lbl.gov SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
Document uses legible font sizes
Tap targets are not sized appropriately
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Berkeleyearth.lbl.gov 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 Berkeleyearth.lbl.gov 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.
berkeleyearth.lbl.gov
Open Graph description is not detected on the main page of Berkeley Earth Lbl. 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: