1.8 sec in total
201 ms
1.3 sec
244 ms
Welcome to preview.wolframalpha.com homepage info - get ready to check Preview Wolfram Alpha best content for United States right away, or after learning these important things about preview.wolframalpha.com
Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history, geography, engineering, mathemat...
Visit preview.wolframalpha.comWe analyzed Preview.wolframalpha.com page load time and found that the first response time was 201 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.
preview.wolframalpha.com performance score
name
value
score
weighting
Value2.4 s
72/100
10%
Value7.4 s
4/100
25%
Value4.1 s
79/100
10%
Value1,000 ms
27/100
30%
Value0.067
96/100
15%
Value6.7 s
57/100
10%
201 ms
126 ms
127 ms
189 ms
177 ms
Our browser made a total of 89 requests to load all elements on the main page. We found that 47% of them (42 requests) were addressed to the original Preview.wolframalpha.com, 43% (38 requests) were made to Wolframcdn.com and 4% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (435 ms) belongs to the original domain Preview.wolframalpha.com.
Page size can be reduced by 543.8 kB (51%)
1.1 MB
514.0 kB
In fact, the total size of Preview.wolframalpha.com main page is 1.1 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. 40% of websites need less resources to load. Javascripts take 373.4 kB which makes up the majority of the site volume.
Potential reduce by 71.4 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 71.4 kB or 77% of the original size.
Potential reduce by 662 B
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. Preview Wolfram Alpha images are well optimized though.
Potential reduce by 231.1 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 231.1 kB or 62% of the original size.
Potential reduce by 240.6 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. Preview.wolframalpha.com needs all CSS files to be minified and compressed as it can save up to 240.6 kB or 79% of the original size.
Number of requests can be reduced by 35 (40%)
88
53
The browser has sent 88 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Preview 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 18 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.
preview.wolframalpha.com
201 ms
cdf-toolbar-frontpage.css
126 ms
cdf-popups-frontpage.css
127 ms
Alpha-PRO-201601141424-concatenated-min.css
189 ms
common.footer.css
177 ms
inputtabs.css
180 ms
frontPageSketches.css
122 ms
index.html.css
201 ms
index.html.css
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callout.css
160 ms
jquery.min.js
37 ms
lightbox.css
165 ms
lbox.wob.css
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lightbox.js
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notifyForm.js
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google-analytics-calculate.js
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frontPageSketches.min.js
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FP-201601141424-concatenated-min.js
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inputtabs.js
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downloads.lbox.js
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uploads.lbox.js
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uploads.lbox.pro.js
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watrack.js
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AC_RunActiveContent.js
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swfobject.js
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qckpatch.js
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input.dropdown.js
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index.html.js
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takeatour.png
102 ms
analytics.js
24 ms
user.json.jsp
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mixpanel-2.2.min.js
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collect
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collect
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15 ms
12 ms
bg1.gif
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collect
10 ms
example.concat.json
435 ms
previewfrontpage.jsp
52 ms
authstatus.jsp
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example.pods.json
54 ms
utilities.js
52 ms
user.json.jsp
278 ms
wolfram-alpha-logo.svg
247 ms
explore-examples-text.svg
64 ms
settingsGears.png
54 ms
compute-icon.svg
55 ms
newtoalpha-sprite.png
237 ms
input-icons.woff
52 ms
Mathematics-icon.svg
207 ms
StepbystepSolutions-icon.svg
208 ms
WordsLinguistics-icon.svg
216 ms
UnitsMeasures-icon.svg
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StatisticalDataAnalysis-icon.svg
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PeopleHistory-icon.svg
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DatesTimes-icon.svg
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Chemistry-icon.svg
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CultureMedia-icon.svg
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Physics-icon.svg
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TechnologicalWorld-icon.svg
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ComputationalSciences-icon.svg
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WebComputerSystems-icon.svg
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bg3.gif
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bg2.gif
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pro.sidebar.js
34 ms
dates.json
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blue-circles.png
226 ms
notifier.json
33 ms
preview.wolframalpha.com accessibility score
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
Buttons do not have an accessible name
Form elements do not have associated labels
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
preview.wolframalpha.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
preview.wolframalpha.com SEO score
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
Document uses legible font sizes
Tap targets are not sized appropriately
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Preview.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 Preview.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.
preview.wolframalpha.com
Open Graph description is not detected on the main page of Preview 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: