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developer.wolframalpha.com screenshot

Report Summary

  • 61

    Performance

    Renders faster than
    76% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 81

    SEO

    Google-friendlier than
    43% of websites

developer.wolframalpha.com

Wolfram|Alpha Developer Portal

Page Load Speed

1.1 sec in total

First Response

107 ms

Resources Loaded

884 ms

Page Rendered

122 ms

developer.wolframalpha.com screenshot

About Website

Welcome to developer.wolframalpha.com homepage info - get ready to check Developer Wolfram Alpha best content for United States right away, or after learning these important things about developer.wolframalpha.com

Use the Wolfram|Alpha Developer portal to access a broad range of APIs from step-by-step solutions to fast query recognizer.

Visit developer.wolframalpha.com

Key Findings

We analyzed Developer.wolframalpha.com page load time and found that the first response time was 107 ms and then it took 1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

developer.wolframalpha.com performance score

61

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value6.6 s

8/100

25%

SI (Speed Index)

Value4.3 s

76/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.083

94/100

15%

TTI (Time to Interactive)

Value6.3 s

61/100

10%

Network Requests Diagram

developer.wolframalpha.com

107 ms

141 ms

reset.css

56 ms

colors.css

57 ms

typography.css

59 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Developer.wolframalpha.com, 62% (28 requests) were made to Wolframalpha.com and 13% (6 requests) were made to Wolframcdn.com. The less responsive or slowest element that took the longest time to load (438 ms) relates to the external source Wolframalpha.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 181.2 kB (49%)

Content Size

366.2 kB

After Optimization

185.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Developer.wolframalpha.com main page is 366.2 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 25% of websites need less resources to load. Javascripts take 147.4 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 16.1 kB

  • Original 23.4 kB
  • After minification 21.3 kB
  • After compression 7.4 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 16.1 kB or 69% of the original size.

Image Optimization

-10%

Potential reduce by 8.4 kB

  • Original 80.3 kB
  • After minification 72.0 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. Developer Wolfram Alpha images are well optimized though.

JavaScript Optimization

-52%

Potential reduce by 77.0 kB

  • Original 147.4 kB
  • After minification 131.6 kB
  • After compression 70.5 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 77.0 kB or 52% of the original size.

CSS Optimization

-69%

Potential reduce by 79.8 kB

  • Original 115.0 kB
  • After minification 93.2 kB
  • After compression 35.2 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. Developer.wolframalpha.com needs all CSS files to be minified and compressed as it can save up to 79.8 kB or 69% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (74%)

Requests Now

43

After Optimization

11

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Developer Wolfram Alpha. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

developer.wolframalpha.com

developer.wolframalpha.com

107 ms

141 ms

reset.css

reset.css

56 ms

colors.css

colors.css

57 ms

typography.css

typography.css

59 ms

basic.layout.css

basic.layout.css

108 ms

header.css

header.css

60 ms

common.footer.css

common.footer.css

146 ms

common.elements.css

common.elements.css

162 ms

callout.css

callout.css

106 ms

modernizr-1.6.min.js

modernizr-1.6.min.js

185 ms

common.css

common.css

89 ms

main.css

main.css

90 ms

jquery.min.js

jquery.min.js

31 ms

lightbox.css

lightbox.css

111 ms

lbox.wob.css

lbox.wob.css

112 ms

lightbox.js

lightbox.js

114 ms

notifyForm.js

notifyForm.js

112 ms

google-analytics-calculate.js

google-analytics-calculate.js

155 ms

index.js

index.js

217 ms

utilities.js

utilities.js

214 ms

watrack.js

watrack.js

214 ms

auth.js

auth.js

215 ms

analytics.js

analytics.js

28 ms

user.json.jsp

user.json.jsp

65 ms

mixpanel-2.2.min.js

mixpanel-2.2.min.js

22 ms

header-logo.png

header-logo.png

69 ms

Widget_PageTitle.png

Widget_PageTitle.png

67 ms

header-nav-arrow.png

header-nav-arrow.png

68 ms

OverviewMain.png

OverviewMain.png

136 ms

graySquare.jpg

graySquare.jpg

86 ms

OverviewWidgets.png

OverviewWidgets.png

438 ms

BeyondWidgets.png

BeyondWidgets.png

117 ms

fb_foot.png

fb_foot.png

144 ms

twitter_foot.png

twitter_foot.png

145 ms

email_foot.png

email_foot.png

146 ms

linked_foot.png

linked_foot.png

145 ms

tumblr_foot.png

tumblr_foot.png

146 ms

32 ms

31 ms

collect

collect

20 ms

collect

collect

26 ms

collect

collect

22 ms

ga.js

ga.js

18 ms

__utm.gif

__utm.gif

12 ms

Accessibility Review

developer.wolframalpha.com accessibility score

88

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

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.

Best Practices

developer.wolframalpha.com best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

developer.wolframalpha.com SEO score

81

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

High

robots.txt is not valid

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Developer.wolframalpha.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Developer.wolframalpha.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

developer.wolframalpha.com

Open Graph description is not detected on the main page of Developer Wolfram Alpha. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: