1.6 sec in total
382 ms
865 ms
322 ms
Visit airandspace.si.edu now to see the best up-to-date Air And Space Si content for United States and also check out these interesting facts you probably never knew about airandspace.si.edu
The Smithsonian's National Air and Space Museum maintains the world's largest and most significant collection of aviation and space artifacts, encompassing all aspects of human flight. It op...
Visit airandspace.si.eduWe analyzed Airandspace.si.edu page load time and found that the first response time was 382 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.
airandspace.si.edu performance score
name
value
score
weighting
Value3.0 s
48/100
10%
Value8.5 s
1/100
25%
Value13.4 s
2/100
10%
Value1,370 ms
16/100
30%
Value0.309
38/100
15%
Value24.7 s
0/100
10%
382 ms
37 ms
34 ms
31 ms
35 ms
Our browser made a total of 80 requests to load all elements on the main page. We found that 81% of them (65 requests) were addressed to the original Airandspace.si.edu, 5% (4 requests) were made to Translate.googleapis.com and 4% (3 requests) were made to Si.edu. The less responsive or slowest element that took the longest time to load (382 ms) belongs to the original domain Airandspace.si.edu.
Page size can be reduced by 544.3 kB (28%)
1.9 MB
1.4 MB
In fact, the total size of Airandspace.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. 55% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.
Potential reduce by 113.2 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. This page needs HTML code to be minified as it can gain 52.9 kB, which is 42% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 113.2 kB or 89% of the original size.
Potential reduce by 46.0 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. Air And Space Si images are well optimized though.
Potential reduce by 213.3 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 213.3 kB or 54% of the original size.
Potential reduce by 171.8 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. Airandspace.si.edu needs all CSS files to be minified and compressed as it can save up to 171.8 kB or 84% of the original size.
Number of requests can be reduced by 45 (60%)
75
30
The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Air And Space 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 7 to 1 for CSS and as a result speed up the page load time.
airandspace.si.edu
382 ms
bootstrap.css
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extras.css
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bootstrap-responsive.css
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hamburger-main-test.css
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modernizr-1.7.min.js
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airandspace.si.edu 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
[role]s are not contained by their required parent element
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
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
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
airandspace.si.edu 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
Page has valid source maps
airandspace.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
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 Airandspace.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 Airandspace.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.
airandspace.si.edu
Open Graph description is not detected on the main page of Air And Space 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: