Tools & Wizards About Us
twentyfirstcenturyoptical.com screenshot

Report Summary

  • 52

    Performance

    Renders faster than
    70% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 87% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

twentyfirstcenturyoptical.com

21st Century Optical Fashions - Optometrist | Smithtown, NY

Page Load Speed

744 ms in total

First Response

91 ms

Resources Loaded

653 ms

Page Rendered

0 ms

twentyfirstcenturyoptical.com screenshot

About Website

Visit twentyfirstcenturyoptical.com now to see the best up-to-date Twentyfirst Century Optical content and also check out these interesting facts you probably never knew about twentyfirstcenturyoptical.com

Over 30 years of experience. Family and senior discounts available. Eye care. Eyewear. Glasses. Glaucoma. Cataracts. Contacts. Call us at 631-724-4545.

Visit twentyfirstcenturyoptical.com

Key Findings

We analyzed Twentyfirstcenturyoptical.com page load time and found that the first response time was 91 ms and then it took 653 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

twentyfirstcenturyoptical.com performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

80/100

10%

LCP (Largest Contentful Paint)

Value3.5 s

62/100

25%

SI (Speed Index)

Value3.1 s

93/100

10%

TBT (Total Blocking Time)

Value1,720 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value13.6 s

11/100

10%

Network Requests Diagram

twentyfirstcenturyoptical.com

91 ms

www.twentyfirstcenturyoptical.com

187 ms

www.twentyfirstcenturyoptical.com

196 ms

hic.js

24 ms

5707100_155x155-07b312d4-182w.png

130 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 30% of them (6 requests) were addressed to the original Twentyfirstcenturyoptical.com, 30% (6 requests) were made to Le-cdn.hibuwebsites.com and 15% (3 requests) were made to Static-res-cdn.websites.hibu.com. The less responsive or slowest element that took the longest time to load (196 ms) belongs to the original domain Twentyfirstcenturyoptical.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 324.9 kB (59%)

Content Size

551.9 kB

After Optimization

227.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Twentyfirstcenturyoptical.com main page is 551.9 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. 35% of websites need less resources to load. HTML takes 304.9 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 253.9 kB

  • Original 304.9 kB
  • After minification 116.0 kB
  • After compression 51.0 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 188.9 kB, which is 62% 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 253.9 kB or 83% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 5.3 kB
  • After minification 5.3 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. Twentyfirst Century Optical images are well optimized though.

JavaScript Optimization

-29%

Potential reduce by 71.0 kB

  • Original 241.5 kB
  • After minification 233.9 kB
  • After compression 170.5 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 71.0 kB or 29% of the original size.

CSS Optimization

-29%

Potential reduce by 36 B

  • Original 125 B
  • After minification 125 B
  • After compression 89 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. Twentyfirstcenturyoptical.com needs all CSS files to be minified and compressed as it can save up to 36 B or 29% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (53%)

Requests Now

17

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Twentyfirst Century Optical. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

twentyfirstcenturyoptical.com

twentyfirstcenturyoptical.com

91 ms

www.twentyfirstcenturyoptical.com

www.twentyfirstcenturyoptical.com

187 ms

www.twentyfirstcenturyoptical.com

www.twentyfirstcenturyoptical.com

196 ms

hic.js

hic.js

24 ms

5707100_155x155-07b312d4-182w.png

5707100_155x155-07b312d4-182w.png

130 ms

hibu-runtime.css

hibu-runtime.css

43 ms

jquery-3.7.0.min.js

jquery-3.7.0.min.js

57 ms

d-js-one-runtime-unified-desktop.min.js

d-js-one-runtime-unified-desktop.min.js

73 ms

d-js-jquery-migrate.min.js

d-js-jquery-migrate.min.js

72 ms

AppMeasurement.js

AppMeasurement.js

83 ms

hibu-analytics.min.js

hibu-analytics.min.js

86 ms

omn_setting.js

omn_setting.js

122 ms

f.js

f.js

52 ms

d-b321-25f1ab5f7d2f-1152w.jpg

d-b321-25f1ab5f7d2f-1152w.jpg

112 ms

4583470-271w.jpg

4583470-271w.jpg

84 ms

4583474-271w.jpg

4583474-271w.jpg

129 ms

6019997-271w.jpg

6019997-271w.jpg

129 ms

4583473-271w.jpg

4583473-271w.jpg

141 ms

sdk.js

sdk.js

17 ms

sdk.js

sdk.js

6 ms

Accessibility Review

twentyfirstcenturyoptical.com accessibility score

95

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

Links do not have a discernible name

Best Practices

twentyfirstcenturyoptical.com best practices score

83

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

twentyfirstcenturyoptical.com SEO score

93

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

Links do not have descriptive text

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

    EN

  • Encoding

    UTF-8

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

twentyfirstcenturyoptical.com

Open Graph data is detected on the main page of Twentyfirst Century Optical. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: