Tools & Wizards About Us

Report Summary

  • 14

    Performance

    Renders faster than
    26% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

links.numerade.com

Find Video Solutions for STEM Textbook Questions | Numerade

Page Load Speed

5.8 sec in total

First Response

36 ms

Resources Loaded

5.7 sec

Page Rendered

128 ms

About Website

Welcome to links.numerade.com homepage info - get ready to check Links Numerade best content for United States right away, or after learning these important things about links.numerade.com

Our team of 1,700+ PhDs and TAs from universities across the US provides step-by-step solutions to your Science, Math and Economics questions.

Visit links.numerade.com

Key Findings

We analyzed Links.numerade.com page load time and found that the first response time was 36 ms and then it took 5.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

links.numerade.com performance score

14

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.1 s

1/100

10%

LCP (Largest Contentful Paint)

Value12.7 s

0/100

25%

SI (Speed Index)

Value10.8 s

6/100

10%

TBT (Total Blocking Time)

Value2,720 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.131

81/100

15%

TTI (Time to Interactive)

Value20.6 s

2/100

10%

Network Requests Diagram

links.numerade.com

36 ms

numerade.com

199 ms

www.numerade.com

299 ms

videojs-overlay.min.9c88bb2e1ca5.css

12 ms

reset-min.css

200 ms

Our browser made a total of 141 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Links.numerade.com, 72% (101 requests) were made to Numerade.com and 6% (8 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Numerade.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 262.6 kB (11%)

Content Size

2.5 MB

After Optimization

2.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Links.numerade.com main page is 2.5 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 987.3 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 112.6 kB

  • Original 141.1 kB
  • After minification 125.0 kB
  • After compression 28.5 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 16.1 kB, which is 11% 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 112.6 kB or 80% of the original size.

Image Optimization

-14%

Potential reduce by 111.5 kB

  • Original 824.2 kB
  • After minification 712.6 kB

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. Obviously, Links Numerade needs image optimization as it can save up to 111.5 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-2%

Potential reduce by 24.4 kB

  • Original 987.3 kB
  • After minification 987.3 kB
  • After compression 962.8 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

-3%

Potential reduce by 14.0 kB

  • Original 516.1 kB
  • After minification 516.1 kB
  • After compression 502.1 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. Links.numerade.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 78 (60%)

Requests Now

131

After Optimization

53

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 131 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Links Numerade. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 56 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

links.numerade.com accessibility score

67

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

links.numerade.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

links.numerade.com SEO score

93

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

Image elements do not have [alt] attributes

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

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 Links.numerade.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 Links.numerade.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 Links Numerade. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: