2.7 sec in total
536 ms
2 sec
220 ms
Visit historyexplorer.si.edu now to see the best up-to-date History Explorer Si content for United States and also check out these interesting facts you probably never knew about historyexplorer.si.edu
Visit historyexplorer.si.eduWe analyzed Historyexplorer.si.edu page load time and found that the first response time was 536 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.
historyexplorer.si.edu performance score
name
value
score
weighting
Value5.7 s
5/100
10%
Value7.2 s
5/100
25%
Value7.0 s
32/100
10%
Value190 ms
91/100
30%
Value0.021
100/100
15%
Value6.1 s
63/100
10%
536 ms
945 ms
23 ms
32 ms
60 ms
Our browser made a total of 80 requests to load all elements on the main page. We found that 85% of them (68 requests) were addressed to the original Historyexplorer.si.edu, 4% (3 requests) were made to Si.edu and 3% (2 requests) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (945 ms) belongs to the original domain Historyexplorer.si.edu.
Page size can be reduced by 850.6 kB (44%)
1.9 MB
1.1 MB
In fact, the total size of Historyexplorer.si.edu main page is 1.9 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. 70% of websites need less resources to load. Javascripts take 891.8 kB which makes up the majority of the site volume.
Potential reduce by 58.9 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 58.9 kB or 73% of the original size.
Potential reduce by 17.5 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. History Explorer Si images are well optimized though.
Potential reduce by 612.8 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 612.8 kB or 69% of the original size.
Potential reduce by 161.4 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. Historyexplorer.si.edu needs all CSS files to be minified and compressed as it can save up to 161.4 kB or 84% of the original size.
Number of requests can be reduced by 51 (65%)
78
27
The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of History Explorer Si. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 21 to 1 for CSS and as a result speed up the page load time.
historyexplorer.si.edu
536 ms
historyexplorer.si.edu
945 ms
system.base.css
23 ms
system.menus.css
32 ms
system.messages.css
60 ms
system.theme.css
60 ms
comment.css
57 ms
field.css
58 ms
ldap_user.css
59 ms
node.css
48 ms
search.css
64 ms
user.css
65 ms
views.css
64 ms
ckeditor.css
63 ms
ctools.css
62 ms
ldap_servers.admin.css
63 ms
popup.css
71 ms
honeypot.css
73 ms
jquery-ui.css
65 ms
style.css
87 ms
jquery-ui.css
81 ms
mobile.css
76 ms
jquery-1.10.2.min.js
97 ms
jquery.once.js
70 ms
drupal.js
83 ms
popup.js
73 ms
addthis_widget.js
65 ms
jquery.min.js
185 ms
bootstrap.min.js
182 ms
jquery-ui.min.js
201 ms
jquery-ui-tabs-rotate.js
180 ms
script.js
179 ms
webtrends-histexpl.js
180 ms
triggerParams.js
44 ms
g3UaF0R5_normal.png
207 ms
shadow.png
42 ms
explorer-logo.png
46 ms
explorer-logo-print.jpg
46 ms
transparent.png
42 ms
nav-bg.png
43 ms
main-bg.png
47 ms
left-shadow.png
48 ms
billboard%20ae.png
64 ms
description-bg.png
49 ms
womenshistorymonth.jpg
56 ms
hooray_politics_b.jpg
58 ms
search-bg.png
49 ms
input-bg.png
50 ms
search-submit.png
51 ms
search-button.png
54 ms
flag.png
51 ms
731.jpg
55 ms
rss.png
57 ms
star.png
57 ms
8504.jpg
58 ms
8508.jpg
60 ms
3375.jpg
66 ms
59.jpg
65 ms
plan_your_visit.gif
64 ms
footer-bottom.png
65 ms
footer-bg.png
64 ms
behring-logo.png
64 ms
verizon_logo_150.png
65 ms
connected.png
66 ms
twitter.png
69 ms
facebook.png
68 ms
youtube.png
66 ms
rss_footer.png
67 ms
wtid.js
50 ms
boost
102 ms
300lo.json
113 ms
ui-bg_flat_75_ffffff_40x100.png
60 ms
1-normal.png
53 ms
2-normal.png
53 ms
3-normal.png
53 ms
1-hover.png
52 ms
sh.07f0d9bf220d07a763adad1e.html
52 ms
foresee-surveydef.js
71 ms
dcs.gif
31 ms
foresee-dhtml.css
7 ms
historyexplorer.si.edu accessibility score
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
Form elements do not have associated labels
Links do not have a discernible name
historyexplorer.si.edu 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
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
historyexplorer.si.edu 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
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 doesn't use 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 Historyexplorer.si.edu 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 Historyexplorer.si.edu 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.
historyexplorer.si.edu
Open Graph description is not detected on the main page of History Explorer Si. 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: