Tools & Wizards About Us

Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 91% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

preserveamerica.gov

Preserve America | Advisory Council on Historic Preservation

Page Load Speed

2.5 sec in total

First Response

308 ms

Resources Loaded

1.6 sec

Page Rendered

568 ms

About Website

Welcome to preserveamerica.gov homepage info - get ready to check Preserve America best content right away, or after learning these important things about preserveamerica.gov

Preserve America is a federal initiative that encourages and supports community efforts to preserve and enjoy our priceless cultural and natural heritage.

Visit preserveamerica.gov

Key Findings

We analyzed Preserveamerica.gov page load time and found that the first response time was 308 ms and then it took 2.2 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.

Performance Metrics

preserveamerica.gov performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

49/100

10%

LCP (Largest Contentful Paint)

Value24.0 s

0/100

25%

SI (Speed Index)

Value10.3 s

8/100

10%

TBT (Total Blocking Time)

Value3,590 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.075

95/100

15%

TTI (Time to Interactive)

Value22.2 s

1/100

10%

Network Requests Diagram

preserveamerica.gov

308 ms

stylesheet2.css

101 ms

banner5.gif

206 ms

stripes_blur2.gif

115 ms

seal-presidential-color1.gif

176 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 71% of them (24 requests) were addressed to the original Preserveamerica.gov, 9% (3 requests) were made to Platform.twitter.com and 6% (2 requests) were made to Staticxx.facebook.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Preserveamerica.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 247.0 kB (5%)

Content Size

5.4 MB

After Optimization

5.2 MB

  • HTML
  • Images
  • CSS

In fact, the total size of Preserveamerica.gov main page is 5.4 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. 50% of websites need less resources to load. Images take 5.4 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 39.7 kB

  • Original 49.9 kB
  • After minification 31.8 kB
  • After compression 10.1 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 18.0 kB, which is 36% 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 39.7 kB or 80% of the original size.

Image Optimization

-4%

Potential reduce by 204.6 kB

  • Original 5.4 MB
  • After minification 5.2 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. Preserve America images are well optimized though.

CSS Optimization

-75%

Potential reduce by 2.6 kB

  • Original 3.5 kB
  • After minification 2.9 kB
  • After compression 897 B

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. Preserveamerica.gov needs all CSS files to be minified and compressed as it can save up to 2.6 kB or 75% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

33

After Optimization

33

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Preserve America. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

preserveamerica.gov accessibility score

97

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

preserveamerica.gov 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

preserveamerica.gov SEO score

100

Search Engine Optimization Advices

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

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Preserveamerica.gov 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 Preserveamerica.gov main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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