Tools & Wizards About Us
react.amsterdam screenshot

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 99

    Accessibility

    Visual factors better than
    that of 96% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

react.amsterdam

React Summit – The Biggest React Conference Worldwide

Page Load Speed

3.5 sec in total

First Response

40 ms

Resources Loaded

1.4 sec

Page Rendered

2.1 sec

react.amsterdam screenshot

About Website

Visit react.amsterdam now to see the best up-to-date React content for United States and also check out these interesting facts you probably never knew about react.amsterdam

React Summit is an in-person and remote first (hybrid) conference of all things React, gathering OSS authors, top trainers and speakers, as well as web engineers across the globe to meet in Amsterdam ...

Visit react.amsterdam

Key Findings

We analyzed React.amsterdam page load time and found that the first response time was 40 ms and then it took 3.5 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

react.amsterdam performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value34.5 s

0/100

25%

SI (Speed Index)

Value7.8 s

23/100

10%

TBT (Total Blocking Time)

Value610 ms

48/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value15.5 s

7/100

10%

Network Requests Diagram

react.amsterdam

40 ms

reactsummit.com

94 ms

app5873a6.css

46 ms

css2

30 ms

email-decode.min.js

120 ms

Our browser made a total of 287 requests to load all elements on the main page. We found that 0% of them (1 request) were addressed to the original React.amsterdam, 46% (131 requests) were made to Gitnation.imgix.net and 29% (83 requests) were made to Media.graphassets.com. The less responsive or slowest element that took the longest time to load (991 ms) relates to the external source Reactsummit.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.7 MB (11%)

Content Size

15.4 MB

After Optimization

13.7 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of React.amsterdam main page is 15.4 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. Only a small number of websites need less resources to load. Images take 13.6 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 1.6 MB

  • Original 1.8 MB
  • After minification 1.7 MB
  • After compression 230.4 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 1.6 MB or 88% of the original size.

Image Optimization

-1%

Potential reduce by 72.7 kB

  • Original 13.6 MB
  • After minification 13.5 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. React images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 30 B

  • Original 1.9 kB
  • After minification 1.9 kB
  • After compression 1.9 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.

Requests Breakdown

Number of requests can be reduced by 18 (7%)

Requests Now

269

After Optimization

251

  • Images
  • JavaScript
  • CSS

The browser has sent 269 CSS, Javascripts, AJAX and image requests in order to completely render the main page of React. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

react.amsterdam

react.amsterdam

40 ms

reactsummit.com

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94 ms

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Accessibility Review

react.amsterdam accessibility score

99

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

react.amsterdam 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

react.amsterdam SEO score

89

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

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 React.amsterdam 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 React.amsterdam 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

react.amsterdam

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