Tools & Wizards About Us

Report Summary

  • 90

    Performance

    Renders faster than
    91% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

nelsonair.com

Precision Air Bearings, Air Bearing Tables, Air Bearing Slides | PI

Page Load Speed

312 ms in total

First Response

36 ms

Resources Loaded

155 ms

Page Rendered

121 ms

About Website

Visit nelsonair.com now to see the best up-to-date Nelson Air content and also check out these interesting facts you probably never knew about nelsonair.com

Manufacturer of air bearings, air bearing tables and air bearing slides. Products include linear, rotary, spindle, spherical, and planar air bearings. Custom design and integration for prototypes to O...

Visit nelsonair.com

Key Findings

We analyzed Nelsonair.com page load time and found that the first response time was 36 ms and then it took 276 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.

Performance Metrics

nelsonair.com performance score

90

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

91/100

10%

LCP (Largest Contentful Paint)

Value2.9 s

81/100

25%

SI (Speed Index)

Value1.7 s

100/100

10%

TBT (Total Blocking Time)

Value130 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0.096

91/100

15%

TTI (Time to Interactive)

Value4.4 s

83/100

10%

Network Requests Diagram

nelsonair.com

36 ms

www.nelsonair.com

47 ms

reset.css

5 ms

text.css

12 ms

960.css

12 ms

Our browser made a total of 23 requests to load all elements on the main page. We found that 96% of them (22 requests) were addressed to the original Nelsonair.com, 4% (1 request) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (47 ms) belongs to the original domain Nelsonair.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 13.8 kB (6%)

Content Size

226.1 kB

After Optimization

212.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nelsonair.com main page is 226.1 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 172.0 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 7.9 kB

  • Original 11.3 kB
  • After minification 10.3 kB
  • After compression 3.5 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 7.9 kB or 69% of the original size.

Image Optimization

-2%

Potential reduce by 4.1 kB

  • Original 172.0 kB
  • After minification 167.9 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. Nelson Air images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 1.2 kB

  • Original 38.7 kB
  • After minification 38.7 kB
  • After compression 37.5 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.

CSS Optimization

-16%

Potential reduce by 651 B

  • Original 4.0 kB
  • After minification 4.0 kB
  • After compression 3.4 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. Nelsonair.com needs all CSS files to be minified and compressed as it can save up to 651 B or 16% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

20

After Optimization

20

  • Images
  • JavaScript
  • CSS

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nelson Air. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

nelsonair.com accessibility score

61

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

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

Links do not have a discernible name

Best Practices

nelsonair.com 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

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

nelsonair.com SEO score

62

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

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nelsonair.com 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 Nelsonair.com 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 Nelson Air. 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: