827 ms in total
21 ms
562 ms
244 ms
Click here to check amazing Library Si content for United States. Otherwise, check out these important facts you probably never knew about library.si.edu
The world's largest museum library system – serving the Smithsonian Institution, the American people, and the world.
Visit library.si.eduWe analyzed Library.si.edu page load time and found that the first response time was 21 ms and then it took 806 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.
library.si.edu performance score
name
value
score
weighting
Value27.5 s
0/100
10%
Value32.4 s
0/100
25%
Value27.5 s
0/100
10%
Value800 ms
36/100
30%
Value0.253
49/100
15%
Value34.9 s
0/100
10%
21 ms
32 ms
29 ms
50 ms
31 ms
Our browser made a total of 120 requests to load all elements on the main page. We found that 91% of them (109 requests) were addressed to the original Library.si.edu, 3% (4 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (284 ms) relates to the external source Fonts.gstatic.com.
Page size can be reduced by 842.2 kB (19%)
4.4 MB
3.6 MB
In fact, the total size of Library.si.edu main page is 4.4 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. 80% 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. Images take 3.6 MB which makes up the majority of the site volume.
Potential reduce by 139.9 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 139.9 kB or 86% of the original size.
Potential reduce by 157.8 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. Library Si images are well optimized though.
Potential reduce by 209.1 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 209.1 kB or 71% of the original size.
Potential reduce by 335.3 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. Library.si.edu needs all CSS files to be minified and compressed as it can save up to 335.3 kB or 83% of the original size.
Number of requests can be reduced by 18 (16%)
114
96
The browser has sent 114 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Library 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 9 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.
library.si.edu
21 ms
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library.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.
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
Links do not have a discernible name
library.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
Missing source maps for large first-party JavaScript
library.si.edu SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
Document uses legible font sizes
Tap targets are not sized appropriately
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Library.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 Library.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.
library.si.edu
Open Graph description is not detected on the main page of Library 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: