1.4 sec in total
26 ms
1.2 sec
168 ms
Click here to check amazing Nmaahc Si content for United States. Otherwise, check out these important facts you probably never knew about nmaahc.si.edu
Smithsonian National Museum of African American History and Culture, opening on the national Mall in 2015.
Visit nmaahc.si.eduWe analyzed Nmaahc.si.edu page load time and found that the first response time was 26 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.
nmaahc.si.edu performance score
name
value
score
weighting
Value21.0 s
0/100
10%
Value26.0 s
0/100
25%
Value21.0 s
0/100
10%
Value370 ms
71/100
30%
Value0
100/100
15%
Value25.5 s
0/100
10%
26 ms
18 ms
7 ms
7 ms
11 ms
Our browser made a total of 78 requests to load all elements on the main page. We found that 51% of them (40 requests) were addressed to the original Nmaahc.si.edu, 5% (4 requests) were made to Translate.googleapis.com and 5% (4 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (881 ms) relates to the external source Trumba.com.
Page size can be reduced by 1.0 MB (41%)
2.5 MB
1.5 MB
In fact, the total size of Nmaahc.si.edu main page is 2.5 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 1.1 MB which makes up the majority of the site volume.
Potential reduce by 73.1 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. This page needs HTML code to be minified as it can gain 20.8 kB, which is 22% 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 73.1 kB or 76% of the original size.
Potential reduce by 58.0 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. Nmaahc Si images are well optimized though.
Potential reduce by 662.5 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 662.5 kB or 61% of the original size.
Potential reduce by 236.4 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. Nmaahc.si.edu needs all CSS files to be minified and compressed as it can save up to 236.4 kB or 81% of the original size.
Number of requests can be reduced by 42 (56%)
75
33
The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nmaahc 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 21 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.
nmaahc.si.edu
26 ms
-1527149195
18 ms
reset.css
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960.css
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Site.css
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Home.css
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HomeSlideshow.css
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endofyear.css
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element.js
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addthis_widget.js
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spuds.js
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triggerParams.js
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webtrends.js
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plane.jpg
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badge.jpg
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pint.png
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donate.png
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base.js
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widgets.js
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s.aspx
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300lo.json
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sh.7c7179124ea24ac6ba46caac.html
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foresee-surveydef.js
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SitePrint.css
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foresee-dhtml.css
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timeline.1b43d11859b7663a2225b885f87704a5.js
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zN7GBFwfMP4uA6AR0HCoLQ.ttf
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RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf
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timeline.4d087f49a21e27038d9769d7c976b8fa.default.css
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nmaahc.si.edu accessibility score
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
Links do not have a discernible name
nmaahc.si.edu best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
nmaahc.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
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
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nmaahc.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 Nmaahc.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.
nmaahc.si.edu
Open Graph description is not detected on the main page of Nmaahc 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: