Tools & Wizards About Us

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 57

    Accessibility

    Visual factors better than
    that of 24% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

sr71.us

SR-71 Blackbirds

Page Load Speed

1.4 sec in total

First Response

193 ms

Resources Loaded

686 ms

Page Rendered

554 ms

About Website

Visit sr71.us now to see the best up-to-date SR 71 content and also check out these interesting facts you probably never knew about sr71.us

SR-71 World record speed run New York to London and 219 links to other SR-71 sites

Visit sr71.us

Key Findings

We analyzed Sr71.us page load time and found that the first response time was 193 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

sr71.us performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.8 s

100/100

10%

LCP (Largest Contentful Paint)

Value0.8 s

100/100

25%

SI (Speed Index)

Value0.9 s

100/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.7 s

100/100

10%

Network Requests Diagram

sr71.us

193 ms

clouds.jpg

142 ms

ga.js

10 ms

counter.js

54 ms

sr71-4.jpg

219 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 75% of them (15 requests) were addressed to the original Sr71.us, 10% (2 requests) were made to Google-analytics.com and 10% (2 requests) were made to C.statcounter.com. The less responsive or slowest element that took the longest time to load (492 ms) belongs to the original domain Sr71.us.

Page Optimization Overview & Recommendations

Page size can be reduced by 19.9 kB (13%)

Content Size

154.2 kB

After Optimization

134.3 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Sr71.us main page is 154.2 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. 20% of websites need less resources to load. Images take 111.6 kB which makes up the majority of the site volume.

HTML Optimization

-68%

Potential reduce by 17.3 kB

  • Original 25.5 kB
  • After minification 25.0 kB
  • After compression 8.2 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 17.3 kB or 68% of the original size.

Image Optimization

-2%

Potential reduce by 2.5 kB

  • Original 111.6 kB
  • After minification 109.0 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. SR 71 images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 34 B

  • Original 17.2 kB
  • After minification 17.2 kB
  • After compression 17.1 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. This website has mostly compressed JavaScripts.

Requests Breakdown

We found no issues to fix!

Requests Now

19

After Optimization

19

  • AJAX
  • Images
  • JavaScript

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SR 71. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

sr71.us accessibility score

57

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Best Practices

sr71.us best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

SEO Factors

sr71.us SEO score

69

Search Engine Optimization Advices

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    WINDOWS-1252

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sr71.us 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 Sr71.us main page’s claimed encoding is windows-1252. 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 SR 71. 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: