Tools & Wizards About Us
sembrown.newsvine.com screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

sembrown.newsvine.com

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

Page Load Speed

3.9 sec in total

First Response

67 ms

Resources Loaded

513 ms

Page Rendered

3.3 sec

sembrown.newsvine.com screenshot

About Website

Visit sembrown.newsvine.com now to see the best up-to-date Sembrown News Vine content for United States and also check out these interesting facts you probably never knew about sembrown.newsvine.com

Go to NBCNews.com for breaking news, videos, and the latest top stories in world news, business, politics, health and pop culture.

Visit sembrown.newsvine.com

Key Findings

We analyzed Sembrown.newsvine.com page load time and found that the first response time was 67 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

sembrown.newsvine.com performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

26/100

10%

LCP (Largest Contentful Paint)

Value5.4 s

21/100

25%

SI (Speed Index)

Value24.1 s

0/100

10%

TBT (Total Blocking Time)

Value14,180 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.26

47/100

15%

TTI (Time to Interactive)

Value52.3 s

0/100

10%

Network Requests Diagram

www.nbcnews.com

67 ms

22d2f570234b80bf.css

58 ms

header.css

53 ms

footer.css

58 ms

e3f1118a59089584.css

88 ms

Our browser made a total of 126 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Sembrown.newsvine.com, 39% (49 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 (274 ms) relates to the external source Nodeassets.nbcnews.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.5 MB (45%)

Content Size

5.4 MB

After Optimization

3.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sembrown.newsvine.com main page is 5.4 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. Javascripts take 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 999.5 kB

  • Original 1.2 MB
  • After minification 1.2 MB
  • After compression 164.8 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 999.5 kB or 86% of the original size.

Image Optimization

-1%

Potential reduce by 8.4 kB

  • Original 1.5 MB
  • After minification 1.5 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. Sembrown News Vine images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 1.4 MB

  • Original 2.5 MB
  • After minification 2.5 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 1.4 MB or 55% of the original size.

CSS Optimization

-26%

Potential reduce by 66.7 kB

  • Original 260.3 kB
  • After minification 259.9 kB
  • After compression 193.5 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. Sembrown.newsvine.com needs all CSS files to be minified and compressed as it can save up to 66.7 kB or 26% of the original size.

Requests Breakdown

Number of requests can be reduced by 48 (38%)

Requests Now

125

After Optimization

77

  • Images
  • JavaScript
  • CSS

The browser has sent 125 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sembrown 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 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.nbcnews.com

www.nbcnews.com

67 ms

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22d2f570234b80bf.css

58 ms

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header.css

53 ms

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Accessibility Review

sembrown.newsvine.com accessibility score

75

Accessibility Issues

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

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

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 IDs are not unique

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

sembrown.newsvine.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

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

sembrown.newsvine.com SEO score

77

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

High

Image elements do not have [alt] attributes

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 Sembrown.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 Sembrown.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

sembrown.newsvine.com

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