Tools & Wizards About Us

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 81

    SEO

    Google-friendlier than
    42% of websites

opalkelly.com

OpalKelly - Xilinx and Altera FPGA Integration Modules

Page Load Speed

2.5 sec in total

First Response

217 ms

Resources Loaded

1.5 sec

Page Rendered

811 ms

About Website

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

We provide a range of powerful USB and PCI Express FPGA modules that deliver the critical interconnection between a PC and many electronic devices.

Visit opalkelly.com

Key Findings

We analyzed Opalkelly.com page load time and found that the first response time was 217 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

opalkelly.com performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

33/100

10%

LCP (Largest Contentful Paint)

Value23.7 s

0/100

25%

SI (Speed Index)

Value8.2 s

20/100

10%

TBT (Total Blocking Time)

Value1,030 ms

26/100

30%

CLS (Cumulative Layout Shift)

Value0.611

10/100

15%

TTI (Time to Interactive)

Value20.5 s

2/100

10%

Network Requests Diagram

opalkelly.com

217 ms

opalkelly.com

240 ms

gtm.js

69 ms

style.min.css

30 ms

styles.min.css

43 ms

Our browser made a total of 94 requests to load all elements on the main page. We found that 87% of them (82 requests) were addressed to the original Opalkelly.com, 5% (5 requests) were made to Use.typekit.net and 1% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (604 ms) relates to the external source Cdn.rawgit.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 463.0 kB (5%)

Content Size

8.8 MB

After Optimization

8.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Opalkelly.com main page is 8.8 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. 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. Images take 8.3 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 188.1 kB

  • Original 217.6 kB
  • After minification 177.5 kB
  • After compression 29.5 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 40.1 kB, which is 18% 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 188.1 kB or 86% of the original size.

Image Optimization

-2%

Potential reduce by 178.1 kB

  • Original 8.3 MB
  • After minification 8.2 MB

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. Opal Kelly images are well optimized though.

JavaScript Optimization

-48%

Potential reduce by 96.7 kB

  • Original 202.8 kB
  • After minification 198.3 kB
  • After compression 106.1 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 96.7 kB or 48% of the original size.

CSS Optimization

-0%

Potential reduce by 31 B

  • Original 36.8 kB
  • After minification 36.8 kB
  • After compression 36.7 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. Opalkelly.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 14 (16%)

Requests Now

87

After Optimization

73

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Opal Kelly. 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 CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

opalkelly.com accessibility score

87

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-hidden="true"] elements contain focusable descendents

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

opalkelly.com best practices score

83

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

opalkelly.com SEO score

81

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 Opalkelly.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 Opalkelly.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 Opal Kelly. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: