Access heart-valve-surgery.newsvine.com. NBC News - Breaking News & Top Stories - Latest World, US & Local News

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value13.0 s

0/100

25%

SI (Speed Index)

Value24.5 s

0/100

10%

TBT (Total Blocking Time)

Value12,770 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.028

100/100

15%

TTI (Time to Interactive)

Value54.7 s

0/100

10%

www.nbcnews.com

53 ms

3359b05c2a2a6fdf.css

64 ms

header.css

74 ms

footer.css

115 ms

c16a707d6e8bd5fe.css

79 ms

Our browser made a total of 106 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Heart-valve-surgery.newsvine.com, 45% (48 requests) were made to Nodeassets.nbcnews.com and 1% (1 request) were made to Nbcnews.com. The less responsive or slowest element that took the longest time to load (341 ms) relates to the external source Nodeassets.nbcnews.com.

Content Size

5.2 MB

After Optimization

2.9 MB

In fact, the total size of Heart-valve-surgery.newsvine.com main page is 5.2 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. Javascripts take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 849.0 kB

Original 999.6 kB
After minification 999.6 kB
After compression 150.6 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 849.0 kB or 85% of the original size.

Image Optimization

-1%

Potential reduce by 12.4 kB

Original 1.5 MB
After minification 1.4 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. Heart Valve Surgery News Vine images are well optimized though.

JavaScript Optimization

-50%

Potential reduce by 1.1 MB

Original 2.3 MB
After minification 2.3 MB
After compression 1.1 MB

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 1.1 MB or 50% of the original size.

CSS Optimization

-65%

Potential reduce by 340.5 kB

Original 522.8 kB
After minification 521.9 kB
After compression 182.4 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. Heart-valve-surgery.newsvine.com needs all CSS files to be minified and compressed as it can save up to 340.5 kB or 65% of the original size.

Requests Now

105

After Optimization

The browser has sent 105 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Heart Valve Surgery News Vine. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 38 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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 the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

High

ARIA IDs are not unique

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

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 Heart-valve-surgery.newsvine.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 Heart-valve-surgery.newsvine.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

heart-valve-surgery.newsvine.com

Open Graph data is detected on the main page of Heart Valve Surgery News Vine. 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

NBC News - Breaking News & Top Stories - Latest World, US & Local News | NBC News

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.nbcnews.com

3359b05c2a2a6fdf.css

header.css

footer.css

c16a707d6e8bd5fe.css

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.nbcnews.com

3359b05c2a2a6fdf.css

header.css

footer.css

c16a707d6e8bd5fe.css

5741229484eeb62a.css

8ddd02d8653b2896.css

632071703305b06d.css

989e94e0d9ebdc52.css

becfbb76f3508cdf.css

b93e80ddf89cf6b3.css

9467f7bea3acf077.css

polyfills-5cd94c89d3acac5f.js

webpack-8f2c53149e9a7229.js

framework-79bce4a3a540b080.js

main-3626adf95c8c50d2.js

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5279-db6b95f4ee9e01c7.js

240518-biden-ch-1130-6de9cd.jpg

launch-EN03682f66064449c8b87d78eae3e2fc57.min.js

240518-Benny-Gantz-ch-1414-81d3c1.jpg

240517-Adderall-ew-1226p-c38bf8.jpg

240517-Brian-Chesky-ch-1009-9a8c5f.jpg

220516-bridgerton-nicola-coughlan-jm-1312-1fc966.jpg