2.3 sec in total
156 ms
2 sec
184 ms
Welcome to certs.lbl.gov homepage info - get ready to check CERTS Lbl best content for United States right away, or after learning these important things about certs.lbl.gov
Visit certs.lbl.govWe analyzed Certs.lbl.gov page load time and found that the first response time was 156 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
certs.lbl.gov performance score
name
value
score
weighting
Value6.4 s
2/100
10%
Value7.4 s
4/100
25%
Value8.2 s
20/100
10%
Value330 ms
76/100
30%
Value0.124
83/100
15%
Value9.0 s
33/100
10%
156 ms
903 ms
71 ms
141 ms
201 ms
Our browser made a total of 56 requests to load all elements on the main page. We found that 82% of them (46 requests) were addressed to the original Certs.lbl.gov, 7% (4 requests) were made to F.vimeocdn.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (903 ms) belongs to the original domain Certs.lbl.gov.
Page size can be reduced by 502.4 kB (69%)
730.0 kB
227.6 kB
In fact, the total size of Certs.lbl.gov main page is 730.0 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. 40% of websites need less resources to load. Javascripts take 429.5 kB which makes up the majority of the site volume.
Potential reduce by 14.4 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 14.4 kB or 73% of the original size.
Potential reduce by 1.6 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. CERTS Lbl images are well optimized though.
Potential reduce by 285.6 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 285.6 kB or 66% of the original size.
Potential reduce by 200.7 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. Certs.lbl.gov needs all CSS files to be minified and compressed as it can save up to 200.7 kB or 85% of the original size.
Number of requests can be reduced by 43 (83%)
52
9
The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CERTS 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 21 to 1 for JavaScripts and from 24 to 1 for CSS and as a result speed up the page load time.
certs.lbl.gov
156 ms
certs.lbl.gov
903 ms
system.base.css
71 ms
date.css
141 ms
datepicker.1.7.css
201 ms
field.css
203 ms
fitvids.css
202 ms
node.css
204 ms
search.css
203 ms
user.css
209 ms
views_slideshow_xtra_overlay.css
266 ms
views.css
269 ms
colorbox_style.css
268 ms
ctools.css
269 ms
views_slideshow_xtra.css
270 ms
biblio.css
279 ms
meanmenu.min.css
331 ms
superfish.css
335 ms
superfish-navbar.css
336 ms
white.css
336 ms
eta.css
467 ms
jquery-1.7.2.min.js
52 ms
jquery.once.js
344 ms
drupal.js
462 ms
jquery.fitvids.js
399 ms
fitvids.js
400 ms
views_slideshow_xtra_overlay.js
398 ms
jquery.colorbox-min.js
410 ms
colorbox.js
467 ms
colorbox_style.js
468 ms
views_slideshow_xtra.js
469 ms
jquery.meanmenu.min.js
478 ms
responsive_menus_mean_menu.js
523 ms
googleanalytics.js
531 ms
jquery.hoverIntent.minified.js
528 ms
superfish.js
530 ms
supersubs.js
531 ms
superfish.js
546 ms
normalize.css
131 ms
responsive.css
136 ms
misc.css
139 ms
print.css
140 ms
analytics.js
56 ms
bg_final3.png
93 ms
certs_logo.png
93 ms
126819369
61 ms
bg_tab.png
78 ms
OpenSans-Regular-webfont.woff
77 ms
OpenSans-CondBold-webfont.woff
77 ms
collect
12 ms
player.js
121 ms
player.css
98 ms
ga.js
52 ms
vuid.min.js
94 ms
__utm.gif
33 ms
proxy.html
34 ms
certs.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
<frame> or <iframe> elements do not have a title
certs.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
certs.lbl.gov SEO score
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 Certs.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 Certs.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.
certs.lbl.gov
Open Graph description is not detected on the main page of CERTS 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: