Tools & Wizards About Us
si.edu screenshot

Report Summary

  • 6

    Performance

    Renders faster than
    21% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

si.edu

Smithsonian Institution | Home

Page Load Speed

4.9 sec in total

First Response

146 ms

Resources Loaded

4.5 sec

Page Rendered

238 ms

si.edu screenshot

About Website

Click here to check amazing Si content for United States. Otherwise, check out these important facts you probably never knew about si.edu

Official website of the Smithsonian, the world's largest museum and research complex, with 21 museums, 9 research centers, and affiliates around the world.

Visit si.edu

Key Findings

We analyzed Si.edu page load time and found that the first response time was 146 ms and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

si.edu performance score

6

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

12/100

10%

LCP (Largest Contentful Paint)

Value20.4 s

0/100

25%

SI (Speed Index)

Value8.2 s

20/100

10%

TBT (Total Blocking Time)

Value2,820 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.553

13/100

15%

TTI (Time to Interactive)

Value23.1 s

1/100

10%

Network Requests Diagram

si.edu

146 ms

1658422140

13 ms

1966663362

4028 ms

reset.css

13 ms

960.css

13 ms

Our browser made a total of 71 requests to load all elements on the main page. We found that 75% of them (53 requests) were addressed to the original Si.edu, 6% (4 requests) were made to Trumba.com and 4% (3 requests) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (4 sec) belongs to the original domain Si.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.3 MB (33%)

Content Size

3.8 MB

After Optimization

2.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Si.edu main page is 3.8 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 2.6 MB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 58.4 kB

  • Original 79.2 kB
  • After minification 68.5 kB
  • After compression 20.9 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. This page needs HTML code to be minified as it can gain 10.7 kB, which is 13% 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 58.4 kB or 74% of the original size.

Image Optimization

-15%

Potential reduce by 405.5 kB

  • Original 2.6 MB
  • After minification 2.2 MB

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. Obviously, Si needs image optimization as it can save up to 405.5 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-67%

Potential reduce by 550.0 kB

  • Original 816.3 kB
  • After minification 801.5 kB
  • After compression 266.3 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 550.0 kB or 67% of the original size.

CSS Optimization

-82%

Potential reduce by 258.9 kB

  • Original 317.6 kB
  • After minification 278.8 kB
  • After compression 58.7 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. Si.edu needs all CSS files to be minified and compressed as it can save up to 258.9 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (40%)

Requests Now

70

After Optimization

42

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 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 10 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

si.edu

si.edu

146 ms

1658422140

1658422140

13 ms

1966663362

1966663362

4028 ms

reset.css

reset.css

13 ms

960.css

960.css

13 ms

Site.css

Site.css

13 ms

Home.css

Home.css

12 ms

HomeSlideshow.css

HomeSlideshow.css

29 ms

css

css

66 ms

css

css

76 ms

spuds.js

spuds.js

597 ms

triggerParams.js

triggerParams.js

43 ms

webtrends.js

webtrends.js

26 ms

addthis_widget.js

addthis_widget.js

43 ms

lg-share-en.gif

lg-share-en.gif

22 ms

u309844aacme.jpg__420x240_q85_crop_upscale.jpg

u309844aacme.jpg__420x240_q85_crop_upscale.jpg

89 ms

SI-SeriouslyAmazing.png

SI-SeriouslyAmazing.png

26 ms

donate.png

donate.png

23 ms

campaign.png

campaign.png

22 ms

join.png

join.png

27 ms

shop.png

shop.png

25 ms

slideshow-raycharles.jpg

slideshow-raycharles.jpg

27 ms

slideshow-smithsonianearth.jpg

slideshow-smithsonianearth.jpg

30 ms

slideshow-npsIMAX.jpg

slideshow-npsIMAX.jpg

28 ms

The-Army-Corps-of-Engineers.jpg

The-Army-Corps-of-Engineers.jpg

54 ms

slideshow-renwickwonder.jpg

slideshow-renwickwonder.jpg

38 ms

callout_visit-saam.jpg

callout_visit-saam.jpg

29 ms

callout_exhibitions.jpg

callout_exhibitions.jpg

182 ms

callout_collections.jpg

callout_collections.jpg

181 ms

callout_encyclopedia.jpg

callout_encyclopedia.jpg

181 ms

promo.jpg

promo.jpg

181 ms

blog_malaria.jpg

blog_malaria.jpg

181 ms

blog_rea.jpg

blog_rea.jpg

180 ms

blog_apollo11.jpg

blog_apollo11.jpg

186 ms

facebook-40x40.png

facebook-40x40.png

180 ms

twitter-40x40.png

twitter-40x40.png

184 ms

googlep-40x40.png

googlep-40x40.png

181 ms

40-email.png

40-email.png

180 ms

youtube-40x40.png

youtube-40x40.png

183 ms

flickr-40x40.png

flickr-40x40.png

181 ms

instagram-40x40.png

instagram-40x40.png

182 ms

pinterest_40x40.png

pinterest_40x40.png

182 ms

General-Journeys-SI-232x117.jpg

General-Journeys-SI-232x117.jpg

182 ms

folkways-woody.jpg

folkways-woody.jpg

182 ms

101_objects.jpg

101_objects.jpg

182 ms

promo-smithsonian-mag.jpg

promo-smithsonian-mag.jpg

192 ms

facebook.png

facebook.png

183 ms

twitter.png

twitter.png

183 ms

google.png

google.png

183 ms

flickr.png

flickr.png

183 ms

instagram.png

instagram.png

191 ms

newfiddlerweb.jpg__420x240_q85_crop_upscale.jpg

newfiddlerweb.jpg__420x240_q85_crop_upscale.jpg

81 ms

panpg15399spaceyrcr1web.jpg__420x240_q85_crop_upscale.jpg

panpg15399spaceyrcr1web.jpg__420x240_q85_crop_upscale.jpg

83 ms

analytics.js

analytics.js

38 ms

youtube.png

youtube.png

180 ms

enews.png

enews.png

177 ms

pinterest.png

pinterest.png

175 ms

search_icon.png

search_icon.png

173 ms

nav_3_bg.png

nav_3_bg.png

175 ms

spinner_trumba.gif

spinner_trumba.gif

134 ms

buttonbg.png

buttonbg.png

147 ms

collect

collect

14 ms

collect

collect

130 ms

wtid.js

wtid.js

11 ms

s.aspx

s.aspx

131 ms

s.aspx

s.aspx

232 ms

300lo.json

300lo.json

39 ms

sh.7c7179124ea24ac6ba46caac.html

sh.7c7179124ea24ac6ba46caac.html

101 ms

SitePrint.css

SitePrint.css

4 ms

dcs.gif

dcs.gif

8 ms

Reset.css

Reset.css

4 ms

Accessibility Review

si.edu accessibility score

98

Accessibility Issues

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

High

[aria-hidden="true"] elements contain focusable descendents

Best Practices

si.edu best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

si.edu SEO score

90

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Si.edu 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 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.

Social Sharing Optimization

si.edu

Open Graph description is not detected on the main page of 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: