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corning.com screenshot

Report Summary

  • 53

    Performance

    Renders faster than
    70% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

corning.com

Corning | Materials Science Technology and Innovation

Page Load Speed

3.4 sec in total

First Response

137 ms

Resources Loaded

1.7 sec

Page Rendered

1.6 sec

corning.com screenshot

About Website

Welcome to corning.com homepage info - get ready to check Corning best content for United States right away, or after learning these important things about corning.com

Corning Incorporated is a global-leading innovator in materials science, with 170 years of life-changing inventions and category-defining products.

Visit corning.com

Key Findings

We analyzed Corning.com page load time and found that the first response time was 137 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

corning.com performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

83/100

10%

LCP (Largest Contentful Paint)

Value2.1 s

96/100

25%

SI (Speed Index)

Value6.3 s

41/100

10%

TBT (Total Blocking Time)

Value3,170 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.015

100/100

15%

TTI (Time to Interactive)

Value15.4 s

7/100

10%

Network Requests Diagram

corning.com

137 ms

en.html

165 ms

modernizr.min.js

141 ms

fonts.css

64 ms

jquery.min.js

78 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 94% of them (29 requests) were addressed to the original Corning.com, 3% (1 request) were made to S.go-mpulse.net and 3% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (815 ms) relates to the external source S.go-mpulse.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 650.4 kB (38%)

Content Size

1.7 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • CSS

In fact, the total size of Corning.com main page is 1.7 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 70% of websites need less resources to load. Images take 986.3 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 629.2 kB

  • Original 729.8 kB
  • After minification 693.2 kB
  • After compression 100.6 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 629.2 kB or 86% of the original size.

Image Optimization

-2%

Potential reduce by 21.1 kB

  • Original 986.3 kB
  • After minification 965.2 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. Corning images are well optimized though.

CSS Optimization

-6%

Potential reduce by 96 B

  • Original 1.6 kB
  • After minification 1.6 kB
  • After compression 1.5 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. Corning.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 5 (22%)

Requests Now

23

After Optimization

18

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Corning. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

corning.com

corning.com

137 ms

en.html

en.html

165 ms

modernizr.min.js

modernizr.min.js

141 ms

fonts.css

fonts.css

64 ms

jquery.min.js

jquery.min.js

78 ms

header-footer.min.js

header-footer.min.js

375 ms

homepage.min.js

homepage.min.js

465 ms

5M4R6-W5VWA-M33HQ-4MJRB-HH9GW

5M4R6-W5VWA-M33HQ-4MJRB-HH9GW

815 ms

gtm.js

gtm.js

779 ms

logo-glass-bg.png

logo-glass-bg.png

398 ms

img.jpg

img.jpg

398 ms

gloss-top-blue.png

gloss-top-blue.png

397 ms

img.jpg

img.jpg

772 ms

img.jpg

img.jpg

774 ms

img.jpg

img.jpg

415 ms

spacer.png

spacer.png

769 ms

img.jpg

img.jpg

415 ms

img.jpg

img.jpg

771 ms

img.jpg

img.jpg

771 ms

img.jpg

img.jpg

773 ms

TheSans_B2_500_.woff

TheSans_B2_500_.woff

482 ms

icomoon-v2.ttf

icomoon-v2.ttf

489 ms

TheSans_B2_700_.woff

TheSans_B2_700_.woff

484 ms

TheSans_B2_500i.woff

TheSans_B2_500i.woff

481 ms

icomoon.woff

icomoon.woff

485 ms

Corning.woff

Corning.woff

481 ms

footer.glossary.json

footer.glossary.json

238 ms

img.jpg

img.jpg

413 ms

img.jpg

img.jpg

413 ms

img.jpg

img.jpg

413 ms

img.jpg

img.jpg

415 ms

Accessibility Review

corning.com accessibility score

74

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 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.

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.

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 valid value for its [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

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

corning.com best practices score

67

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

corning.com SEO score

84

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

High

Tap targets are not sized appropriately

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 Corning.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 Corning.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

corning.com

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