Tools & Wizards About Us

Report Summary

  • 97

    Performance

    Renders faster than
    94% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

theopticalinterchange.com

The Optical Interchange | Optical Equipment | Ocular Equipment | Affordable Discount Optical Equipment For Sale By Owner | New, Used, and Refurbished ...

Page Load Speed

587 ms in total

First Response

79 ms

Resources Loaded

384 ms

Page Rendered

124 ms

About Website

Welcome to theopticalinterchange.com homepage info - get ready to check The Optical Interchange best content right away, or after learning these important things about theopticalinterchange.com

The Optical Interchange Inc. offers discount new, used, and refurbished optical and ocular equipment for sale. We sell lens, binoculars, opthalmoscopes, opthalmic headsets, and more.

Visit theopticalinterchange.com

Key Findings

We analyzed Theopticalinterchange.com page load time and found that the first response time was 79 ms and then it took 508 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

theopticalinterchange.com performance score

97

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.5 s

95/100

10%

LCP (Largest Contentful Paint)

Value2.4 s

91/100

25%

SI (Speed Index)

Value1.5 s

100/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.0 s

96/100

10%

Network Requests Diagram

theopticalinterchange.com

79 ms

www.theopticalinterchange.com

129 ms

style.css

14 ms

ga.js

15 ms

branding.css

49 ms

Our browser made a total of 27 requests to load all elements on the main page. We found that 81% of them (22 requests) were addressed to the original Theopticalinterchange.com, 7% (2 requests) were made to Ssl.google-analytics.com and 4% (1 request) were made to Google.com. The less responsive or slowest element that took the longest time to load (150 ms) belongs to the original domain Theopticalinterchange.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 20.7 kB (7%)

Content Size

299.3 kB

After Optimization

278.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Theopticalinterchange.com main page is 299.3 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 264.4 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 11.0 kB

  • Original 15.6 kB
  • After minification 13.4 kB
  • After compression 4.5 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. This page needs HTML code to be minified as it can gain 2.1 kB, which is 14% 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 11.0 kB or 71% of the original size.

Image Optimization

-4%

Potential reduce by 9.4 kB

  • Original 264.4 kB
  • After minification 255.0 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. The Optical Interchange 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.

CSS Optimization

-7%

Potential reduce by 152 B

  • Original 2.2 kB
  • After minification 2.2 kB
  • After compression 2.0 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. Theopticalinterchange.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 8 (33%)

Requests Now

24

After Optimization

16

  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of The Optical Interchange. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

theopticalinterchange.com accessibility score

59

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

High

Links do not have a discernible name

Best Practices

theopticalinterchange.com best practices score

75

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

SEO Factors

theopticalinterchange.com SEO score

67

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Theopticalinterchange.com 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 Theopticalinterchange.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 The Optical Interchange. 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: