2.4 sec in total
139 ms
2.1 sec
231 ms
Click here to check amazing History Denver Library content for United States. Otherwise, check out these important facts you probably never knew about history.denverlibrary.org
Visit history.denverlibrary.orgWe analyzed History.denverlibrary.org page load time and found that the first response time was 139 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.
history.denverlibrary.org performance score
name
value
score
weighting
Value3.2 s
44/100
10%
Value4.2 s
44/100
25%
Value3.2 s
92/100
10%
Value20 ms
100/100
30%
Value0.341
33/100
15%
Value3.8 s
89/100
10%
139 ms
228 ms
202 ms
152 ms
254 ms
Our browser made a total of 38 requests to load all elements on the main page. We found that 95% of them (36 requests) were addressed to the original History.denverlibrary.org, 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain History.denverlibrary.org.
Page size can be reduced by 495.0 kB (36%)
1.4 MB
890.8 kB
In fact, the total size of History.denverlibrary.org main page is 1.4 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. 30% of websites need less resources to load. Images take 823.6 kB which makes up the majority of the site volume.
Potential reduce by 46.1 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. 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 46.1 kB or 82% of the original size.
Potential reduce by 48.7 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 Denver Library images are well optimized though.
Potential reduce by 324.8 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 324.8 kB or 79% of the original size.
Potential reduce by 75.3 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. History.denverlibrary.org needs all CSS files to be minified and compressed as it can save up to 75.3 kB or 81% of the original size.
Number of requests can be reduced by 10 (28%)
36
26
The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of History Denver Library. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
history.denverlibrary.org
139 ms
history.denverlibrary.org
228 ms
css_tlbbkPs2mG5NPf83gLxfB7ilBaS9SGx1lurL80Tm8sc.css
202 ms
css_96Sf9xdSGNhyzgt30b-OqAcbLKTskAcpzcLP1vinvPg.css
152 ms
css_HRD5OjBY4k8kX0DOubOIzHAirrzDZl6W9y87Of-oYgg.css
254 ms
css_dYO-sf5aV6i_0bVIE4QmTxSzudYo1Y9lEOvrMNAnalY.css
173 ms
js_8C3wosoE8FcngikGctRPcr2xhV-csiJTGC0_89Bek2Q.js
414 ms
js_B8i0Ax4_1HPwK-jr8cXpahprXvYaguXhO_aZI9MpSPk.js
316 ms
js_NpX2cwCeepkWZZ194B6-ViyVBHleaYLOx5R9EWBOMRU.js
329 ms
js_-Qsy6FVvuvH95FaocW8CR5UrpgH_ibb5kH_5_gCIFc4.js
619 ms
js_h1z4yRn_QCtd583LzTHpoLSqv77ctQ-MGGc02tUBKfU.js
350 ms
js_5idECjjAo-X5YdkT65CaIiodkWmZlZv-WjSkHlWhoYk.js
433 ms
analytics.js
128 ms
logo_newer.png
56 ms
search1.png
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contact.png
163 ms
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previous.png
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next.png
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linkid.js
53 ms
collect
12 ms
history.denverlibrary.org 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
[aria-hidden="true"] elements contain focusable descendents
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
history.denverlibrary.org 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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
history.denverlibrary.org 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 History.denverlibrary.org 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 History.denverlibrary.org 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.
history.denverlibrary.org
Open Graph description is not detected on the main page of History Denver Library. 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: