Tools & Wizards About Us
covesion.com screenshot

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

covesion.com

World Leaders in MgO:PPLN Crystals and Waveguides • Covesion

Page Load Speed

3.4 sec in total

First Response

422 ms

Resources Loaded

2.2 sec

Page Rendered

813 ms

covesion.com screenshot

About Website

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

Covesion are world leaders in the research, development and manufacture of MgO:PPLN solutions for highly efficient non-linear frequency conversion. Contact us.

Visit covesion.com

Key Findings

We analyzed Covesion.com page load time and found that the first response time was 422 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

covesion.com performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

52/100

10%

LCP (Largest Contentful Paint)

Value17.8 s

0/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value2,490 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value19.3 s

2/100

10%

Network Requests Diagram

covesion.com

422 ms

gtm.js

90 ms

script.js

55 ms

banner-block.css

89 ms

logo-slider.css

174 ms

Our browser made a total of 74 requests to load all elements on the main page. We found that 82% of them (61 requests) were addressed to the original Covesion.com, 5% (4 requests) were made to Use.typekit.net and 4% (3 requests) were made to Cdn.jsdelivr.net. The less responsive or slowest element that took the longest time to load (896 ms) belongs to the original domain Covesion.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 211.2 kB (41%)

Content Size

512.9 kB

After Optimization

301.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Covesion.com main page is 512.9 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. 45% of websites need less resources to load. Javascripts take 195.7 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 159.9 kB

  • Original 194.5 kB
  • After minification 166.5 kB
  • After compression 34.5 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 27.9 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 159.9 kB or 82% of the original size.

Image Optimization

-3%

Potential reduce by 927 B

  • Original 31.6 kB
  • After minification 30.6 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. Covesion images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 29.4 kB

  • Original 195.7 kB
  • After minification 195.4 kB
  • After compression 166.3 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 29.4 kB or 15% of the original size.

CSS Optimization

-23%

Potential reduce by 21.0 kB

  • Original 91.2 kB
  • After minification 91.1 kB
  • After compression 70.2 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. Covesion.com needs all CSS files to be minified and compressed as it can save up to 21.0 kB or 23% of the original size.

Requests Breakdown

Number of requests can be reduced by 51 (75%)

Requests Now

68

After Optimization

17

  • Images
  • JavaScript
  • CSS

The browser has sent 68 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Covesion. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 33 to 1 for JavaScripts and from 20 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

covesion.com

covesion.com

422 ms

gtm.js

gtm.js

90 ms

script.js

script.js

55 ms

banner-block.css

banner-block.css

89 ms

logo-slider.css

logo-slider.css

174 ms

wavelength.css

wavelength.css

242 ms

solutions.css

solutions.css

251 ms

counter.css

counter.css

257 ms

cta-panel-small.css

cta-panel-small.css

258 ms

knowledge-hub.css

knowledge-hub.css

258 ms

testimonials.css

testimonials.css

319 ms

red-blue-box.css

red-blue-box.css

334 ms

featured-posts.css

featured-posts.css

343 ms

style.min.css

style.min.css

417 ms

block-style.css

block-style.css

344 ms

bqa0ipg.css

bqa0ipg.css

83 ms

animate-animo.css

animate-animo.css

396 ms

styles.css

styles.css

412 ms

style.css

style.css

428 ms

non-critical.css

non-critical.css

473 ms

slick.css

slick.css

490 ms

jquery.min.js

jquery.min.js

572 ms

jquery-migrate.min.js

jquery-migrate.min.js

503 ms

ajax-scripts.js

ajax-scripts.js

510 ms

slick.min.js

slick.min.js

613 ms

front.bundle.css

front.bundle.css

547 ms

banner-block.js

banner-block.js

587 ms

logo-slider.js

logo-slider.js

588 ms

wavelength.js

wavelength.js

590 ms

solutions.js

solutions.js

675 ms

counter.js

counter.js

675 ms

cta-panel-small.js

cta-panel-small.js

674 ms

knowledge-hub.js

knowledge-hub.js

727 ms

testimonials.js

testimonials.js

727 ms

featured-posts.js

featured-posts.js

780 ms

animo.min.js

animo.min.js

780 ms

jquery.ba-throttle-debounce.min.js

jquery.ba-throttle-debounce.min.js

780 ms

gsap.min.js

gsap.min.js

78 ms

MotionPathPlugin.min.js

MotionPathPlugin.min.js

81 ms

ScrollTrigger.min.js

ScrollTrigger.min.js

101 ms

typed.umd.js

typed.umd.js

585 ms

viewportchecker.js

viewportchecker.js

780 ms

log

log

410 ms

p.css

p.css

46 ms

edsanimate.js

edsanimate.js

685 ms

edsanimate.site.js

edsanimate.site.js

615 ms

ajax-filter.js

ajax-filter.js

613 ms

hooks.min.js

hooks.min.js

606 ms

i18n.min.js

i18n.min.js

600 ms

index.js

index.js

600 ms

index.js

index.js

598 ms

scripts.js

scripts.js

896 ms

non-critical.js

non-critical.js

593 ms

jquery.drawsvg.js

jquery.drawsvg.js

585 ms

front.bundle.js

front.bundle.js

584 ms

typed.umd.js

typed.umd.js

86 ms

arrow-down.svg

arrow-down.svg

326 ms

ico4.svg

ico4.svg

326 ms

ico8.svg

ico8.svg

387 ms

ico1.svg

ico1.svg

388 ms

ico7.svg

ico7.svg

389 ms

ico3.svg

ico3.svg

399 ms

ico6.svg

ico6.svg

398 ms

ico5.svg

ico5.svg

463 ms

Stuart-150x150.jpg

Stuart-150x150.jpg

463 ms

Lewis-150x150.jpg

Lewis-150x150.jpg

461 ms

Mustafa-150x150.jpg

Mustafa-150x150.jpg

474 ms

rongrong-photo-150x150.jpg

rongrong-photo-150x150.jpg

475 ms

foot-logo1-1.png

foot-logo1-1.png

539 ms

foot-logo2-1.png

foot-logo2-1.png

547 ms

d

d

91 ms

d

d

93 ms

d

d

92 ms

en-gb.svg

en-gb.svg

407 ms

Accessibility Review

covesion.com accessibility score

73

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

ARIA toggle fields do not have accessible names

High

[aria-*] attributes do not have valid values

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

covesion.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

Missing source maps for large first-party JavaScript

SEO Factors

covesion.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 Covesion.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 Covesion.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

covesion.com

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