Access demo.lightbend.com. Build, Operate, and Secure Low Latency Systems

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

58/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

84/100

25%

SI (Speed Index)

Value3.3 s

91/100

10%

TBT (Total Blocking Time)

Value1,590 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value10.9 s

21/100

10%

www.lightbend.com

67 ms

css2

70 ms

site.2.1.3.min.css

54 ms

tailwind.1.1.9.min.css

42 ms

otSDKStub.js

70 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Demo.lightbend.com, 31% (26 requests) were made to Lightbend.com and 12% (10 requests) were made to Downloads.lightbend.com. The less responsive or slowest element that took the longest time to load (443 ms) relates to the external source Lightbend.com.

Content Size

2.7 MB

After Optimization

2.6 MB

In fact, the total size of Demo.lightbend.com main page is 2.7 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. 75% 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 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 58.1 kB

Original 70.3 kB
After minification 61.0 kB
After compression 12.2 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 9.3 kB, which is 13% 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 58.1 kB or 83% of the original size.

Image Optimization

-1%

Potential reduce by 22.7 kB

Original 2.5 MB
After minification 2.5 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. Demo Lightbend images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 38 B

Original 118.8 kB
After minification 118.8 kB
After compression 118.8 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.

CSS Optimization

-1%

Potential reduce by 64 B

Original 7.0 kB
After minification 7.0 kB
After compression 6.9 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. Demo.lightbend.com has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Demo Lightbend. 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 from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

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 Demo.lightbend.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 Demo.lightbend.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

demo.lightbend.com

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Build, Operate, and Secure Low Latency Systems | Lightbend

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

www.lightbend.com

css2

site.2.1.3.min.css

tailwind.1.1.9.min.css

otSDKStub.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

www.lightbend.com

css2

site.2.1.3.min.css

tailwind.1.1.9.min.css

otSDKStub.js

618137d8a115fde5596ac087283b993b-site.2.0.4.min.js

564853293d.js

2f79688f-bddc-4793-a394-7539cef20516.json

gtm.js

lightbend-full-color.svg

gm.jpg

akka-logo-line-icon.svg

kalix-k-outlined.svg

lb-icons-svg-400x400-iot-platforms-fridge-white.svg

lb-icons-svg-400x400-streaming-media-plafforms-white.svg

lb-icons-svg-400x400-retail-white.svg

lb-icons-svg-400x400-telemedicine-white.svg

lb-icons-svg-400x400-real-time-financial-services-white.svg

lb-icons-svg-400x400-factory-warehouse-automation-white.svg

lb-icons-svg-400x400-streaming-data-white.svg

lb-icons-svg-400x400-messengers-chatbots-white.svg

lb-icons-svg-400x400-customer-engage-white.svg

lb-icons-svg-400x400-web-based-gaming-white.svg

lb-icons-svg-400x400-app-modern-white.svg

lb-icons-svg-400x400-hyper-personalization-white.svg

gm-logo-white.svg

tesla-logo-white.svg

ing-logo-white.svg

fortnite-alt-logo-white.svg

tesco-logo-white.svg

reflek-logo-white.svg

dream-11-logo-white.svg

swiggy-logo-white.svg

sky-logo-white.svg

ncl-logo-white.svg

tesla.jpg

ing.jpg

fortnite-alt.jpg

tesco.jpg

reflek.jpg

dream-11.jpg

swiggy.jpg

sky.jpg