Report Summary

  • 53

    Performance

    Renders faster than
    70% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

historicbridges.org

Historic Bridges .org

Page Load Speed

3.3 sec in total

First Response

611 ms

Resources Loaded

1.8 sec

Page Rendered

889 ms

About Website

Visit historicbridges.org now to see the best up-to-date Historic Bridges content for United States and also check out these interesting facts you probably never knew about historicbridges.org

Historic bridges resource with photographs and information for bridges in North America. Includes in-depth articles about types in general.

Visit historicbridges.org

Key Findings

We analyzed Historicbridges.org page load time and found that the first response time was 611 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

historicbridges.org performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

79/100

10%

LCP (Largest Contentful Paint)

Value7.6 s

3/100

25%

SI (Speed Index)

Value3.8 s

84/100

10%

TBT (Total Blocking Time)

Value570 ms

52/100

30%

CLS (Cumulative Layout Shift)

Value0.019

100/100

15%

TTI (Time to Interactive)

Value6.6 s

57/100

10%

Network Requests Diagram

historicbridges.org

611 ms

menu.css

290 ms

bstyles.css

213 ms

default.css

281 ms

component.css

295 ms

Our browser made a total of 50 requests to load all elements on the main page. We found that 62% of them (31 requests) were addressed to the original Historicbridges.org, 16% (8 requests) were made to Apis.google.com and 4% (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 Historicbridges.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 224.0 kB (33%)

Content Size

683.9 kB

After Optimization

459.9 kB

In fact, the total size of Historicbridges.org main page is 683.9 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 45% of websites need less resources to load. Images take 448.3 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 136.2 kB

  • Original 160.6 kB
  • After minification 156.9 kB
  • After compression 24.4 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 136.2 kB or 85% of the original size.

Image Optimization

-10%

Potential reduce by 44.5 kB

  • Original 448.3 kB
  • After minification 403.8 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. Historic Bridges images are well optimized though.

JavaScript Optimization

-39%

Potential reduce by 17.1 kB

  • Original 44.0 kB
  • After minification 41.5 kB
  • After compression 26.9 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 17.1 kB or 39% of the original size.

CSS Optimization

-85%

Potential reduce by 26.2 kB

  • Original 30.9 kB
  • After minification 23.2 kB
  • After compression 4.7 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. Historicbridges.org needs all CSS files to be minified and compressed as it can save up to 26.2 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (34%)

Requests Now

47

After Optimization

31

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Historic Bridges. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

historicbridges.org accessibility score

70

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

historicbridges.org best practices score

58

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

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

historicbridges.org SEO score

79

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

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

Social Sharing Optimization

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