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Report Summary

  • 48

    Performance

    Renders faster than
    66% 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

catalog.corning.com

Corning | Materials Science Technology and Innovation

Page Load Speed

9.7 sec in total

First Response

244 ms

Resources Loaded

4.1 sec

Page Rendered

5.4 sec

About Website

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

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

Visit catalog.corning.com

Key Findings

We analyzed Catalog.corning.com page load time and found that the first response time was 244 ms and then it took 9.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

catalog.corning.com performance score

48

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

67/100

10%

LCP (Largest Contentful Paint)

Value2.5 s

89/100

25%

SI (Speed Index)

Value7.2 s

29/100

10%

TBT (Total Blocking Time)

Value3,590 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.022

100/100

15%

TTI (Time to Interactive)

Value17.3 s

4/100

10%

Network Requests Diagram

catalog.corning.com

244 ms

en.html

685 ms

modernizr.min.js

171 ms

fonts.css

187 ms

5M4R6-W5VWA-M33HQ-4MJRB-HH9GW

147 ms

Our browser made a total of 28 requests to load all elements on the main page. We found that 4% of them (1 request) were addressed to the original Catalog.corning.com, 86% (24 requests) were made to Corning.com and 4% (1 request) were made to S.go-mpulse.net. The less responsive or slowest element that took the longest time to load (993 ms) relates to the external source Googletagmanager.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 743.7 kB (78%)

Content Size

952.3 kB

After Optimization

208.6 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Catalog.corning.com main page is 952.3 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. HTML takes 846.5 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 732.2 kB

  • Original 846.5 kB
  • After minification 812.2 kB
  • After compression 114.3 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 732.2 kB or 86% of the original size.

Image Optimization

-11%

Potential reduce by 11.4 kB

  • Original 104.2 kB
  • After minification 92.8 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. Obviously, Catalog Corning needs image optimization as it can save up to 11.4 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

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. Catalog.corning.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 5 (25%)

Requests Now

20

After Optimization

15

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Catalog 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

Accessibility Review

catalog.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

catalog.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

catalog.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 Catalog.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 Catalog.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

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