Tools & Wizards About Us
optisurf.com screenshot

Report Summary

  • 65

    Performance

    Renders faster than
    78% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

optisurf.com

Optical components and instruments – Optical Surfaces

Page Load Speed

6.9 sec in total

First Response

281 ms

Resources Loaded

6.4 sec

Page Rendered

195 ms

optisurf.com screenshot

About Website

Welcome to optisurf.com homepage info - get ready to check Optisurf best content right away, or after learning these important things about optisurf.com

Optical Surfaces Limited are a UK based company supplying the world with high precision optical components and instruments.

Visit optisurf.com

Key Findings

We analyzed Optisurf.com page load time and found that the first response time was 281 ms and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

optisurf.com performance score

65

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

40/100

10%

LCP (Largest Contentful Paint)

Value3.5 s

64/100

25%

SI (Speed Index)

Value13.5 s

2/100

10%

TBT (Total Blocking Time)

Value270 ms

82/100

30%

CLS (Cumulative Layout Shift)

Value0.02

100/100

15%

TTI (Time to Interactive)

Value7.6 s

47/100

10%

Network Requests Diagram

optisurf.com

281 ms

optisurf.com

4922 ms

style.min.css

395 ms

styles.css

358 ms

cookieblocker.min.css

358 ms

Our browser made a total of 48 requests to load all elements on the main page. We found that 83% of them (40 requests) were addressed to the original Optisurf.com, 10% (5 requests) were made to Fonts.gstatic.com and 2% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (4.9 sec) belongs to the original domain Optisurf.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 120.7 kB (12%)

Content Size

992.3 kB

After Optimization

871.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Optisurf.com main page is 992.3 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. 45% of websites need less resources to load. Images take 534.9 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 64.4 kB

  • Original 79.4 kB
  • After minification 73.8 kB
  • After compression 15.0 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. 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 64.4 kB or 81% of the original size.

Image Optimization

-2%

Potential reduce by 9.8 kB

  • Original 534.9 kB
  • After minification 525.1 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. Optisurf images are well optimized though.

JavaScript Optimization

-9%

Potential reduce by 23.5 kB

  • Original 253.0 kB
  • After minification 253.0 kB
  • After compression 229.5 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

-18%

Potential reduce by 23.0 kB

  • Original 125.0 kB
  • After minification 125.0 kB
  • After compression 102.1 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. Optisurf.com needs all CSS files to be minified and compressed as it can save up to 23.0 kB or 18% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (43%)

Requests Now

40

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Optisurf. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

optisurf.com

optisurf.com

281 ms

optisurf.com

optisurf.com

4922 ms

style.min.css

style.min.css

395 ms

styles.css

styles.css

358 ms

cookieblocker.min.css

cookieblocker.min.css

358 ms

css

css

27 ms

style.css

style.css

563 ms

jquery.min.js

jquery.min.js

524 ms

jquery-migrate.min.js

jquery-migrate.min.js

283 ms

et-core-unified-33-17182671724413.min.css

et-core-unified-33-17182671724413.min.css

448 ms

wp-polyfill-inert.min.js

wp-polyfill-inert.min.js

204 ms

regenerator-runtime.min.js

regenerator-runtime.min.js

318 ms

wp-polyfill.min.js

wp-polyfill.min.js

361 ms

hooks.min.js

hooks.min.js

286 ms

i18n.min.js

i18n.min.js

496 ms

index.js

index.js

456 ms

index.js

index.js

520 ms

custom.unified.js

custom.unified.js

767 ms

common.js

common.js

448 ms

complianz.min.js

complianz.min.js

529 ms

background-2.png

background-2.png

105 ms

header-3.jpg

header-3.jpg

197 ms

OS-logo-1.png

OS-logo-1.png

228 ms

background-3.png

background-3.png

181 ms

20940B_.jpg

20940B_.jpg

185 ms

C12063.jpg

C12063.jpg

193 ms

toroid-1.jpg

toroid-1.jpg

458 ms

14848_B.jpg

14848_B.jpg

344 ms

15682A2.jpg

15682A2.jpg

458 ms

optspr56-image.jpg

optspr56-image.jpg

279 ms

19075_A.jpg

19075_A.jpg

458 ms

gimbal-mirror-mounts-z-series.jpg

gimbal-mirror-mounts-z-series.jpg

459 ms

optspr58.jpg

optspr58.jpg

503 ms

optspr82.jpg

optspr82.jpg

509 ms

achromatic-off-axis-paraboloids-cropped-300x211.jpg

achromatic-off-axis-paraboloids-cropped-300x211.jpg

458 ms

precision-interferometer-optics-2.jpg

precision-interferometer-optics-2.jpg

696 ms

artificial-guide-stars-1.jpg

artificial-guide-stars-1.jpg

588 ms

aspheric-lenses.jpg

aspheric-lenses.jpg

597 ms

large-reference-flat.jpg

large-reference-flat.jpg

600 ms

low-profile-mount.jpg

low-profile-mount.jpg

663 ms

counter.js

counter.js

35 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVQ.woff

19 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVQ.woff

23 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVQ.woff

30 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVQ.woff

47 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVQ.woff

47 ms

modules.ttf

modules.ttf

721 ms

t.php

t.php

93 ms

Accessibility Review

optisurf.com accessibility score

86

Accessibility Issues

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

optisurf.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

optisurf.com SEO score

86

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

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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 Optisurf.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 Optisurf.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

optisurf.com

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