2.1 sec in total
302 ms
1.4 sec
361 ms
Click here to check amazing Rechargelabs content for United States. Otherwise, check out these important facts you probably never knew about rechargelabs.org
Wind and solar energy lessons and workshops for science classrooms. The KidWind Challenge, a student driven renewable energy design competition.
Visit rechargelabs.orgWe analyzed Rechargelabs.org page load time and found that the first response time was 302 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.
rechargelabs.org performance score
name
value
score
weighting
Value7.4 s
1/100
10%
Value10.9 s
0/100
25%
Value7.4 s
28/100
10%
Value1,210 ms
20/100
30%
Value0.319
36/100
15%
Value12.4 s
15/100
10%
302 ms
47 ms
42 ms
65 ms
48 ms
Our browser made a total of 42 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Rechargelabs.org, 19% (8 requests) were made to Api.kidwind.org and 10% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (462 ms) relates to the external source Kidwind.org.
Page size can be reduced by 342.0 kB (41%)
826.8 kB
484.8 kB
In fact, the total size of Rechargelabs.org main page is 826.8 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 408.0 kB which makes up the majority of the site volume.
Potential reduce by 342.0 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 342.0 kB or 86% of the original size.
Potential reduce by 0 B
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. Rechargelabs images are well optimized though.
Potential reduce by 50 B
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.
Number of requests can be reduced by 14 (52%)
27
13
The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rechargelabs. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
www.kidwind.org
302 ms
css2
47 ms
mapbox-gl.css
42 ms
css
65 ms
materialdesignicons.min.css
48 ms
mapbox-gl.js
61 ms
43 ms
js
131 ms
runtime.0ee6712.js
97 ms
index.bdd9eaf.js
187 ms
submit..9778b638.ac28dac.js
134 ms
index.2f1146a.js
137 ms
commons.app.375d193.js
212 ms
vendors.app.684774c.js
253 ms
app.5fd879a.js
176 ms
890e5a1175968c23e0a884f75c825994.svg
46 ms
home_hero@2x.1fbe996.png
462 ms
online_challenge_wind_turbine.199fd46.png
121 ms
online_challenge_solar_car.d2866f0.png
439 ms
home_gear@2x.f26cef0.png
461 ms
KFOOCniXp96a4Tc2DaTeuDAoKsE617JFc49knOIYdjTYkqUsLg.ttf
19 ms
KFOOCniXp96a4Tc2DaTeuDAoKsE617JFc49knOIYdjTYdaIsLg.ttf
25 ms
analytics.js
159 ms
announcement
86 ms
home
88 ms
news_homepage
89 ms
gale-force
89 ms
high-flyers
88 ms
wind-riders
89 ms
breezy-backers
88 ms
supporters
88 ms
geon_soft_condensed_black.e60889f.woff
161 ms
geon_soft_condensed.0ec377c.woff
133 ms
pxidypY1o9NHyXh3WvSbGSggdNeL.ttf
40 ms
pxieypY1o9NHyXh3WvSbGSggdO9TTGlE.ttf
461 ms
channel.html
26 ms
collect
27 ms
js
65 ms
37 ms
47 ms
outer.html
16 ms
inner.html
15 ms
rechargelabs.org accessibility score
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
[aria-hidden="true"] elements contain focusable descendents
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
Heading elements are not in a sequentially-descending order
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
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
Image elements do not have [alt] attributes
Links do not have a discernible name
rechargelabs.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
rechargelabs.org 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
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
Document uses legible font sizes
Tap targets are not sized appropriately
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rechargelabs.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 Rechargelabs.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.
rechargelabs.org
Open Graph description is not detected on the main page of Rechargelabs. 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: