Tools & Wizards About Us
sidis.net screenshot

Report Summary

  • 43

    Performance

    Renders faster than
    62% of other websites

  • 52

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 50

    SEO

    Google-friendlier than
    19% of websites

sidis.net

Sidis Archives

Page Load Speed

4.6 sec in total

First Response

141 ms

Resources Loaded

1.5 sec

Page Rendered

2.9 sec

sidis.net screenshot

About Website

Click here to check amazing Sidis content for United States. Otherwise, check out these important facts you probably never knew about sidis.net

William James Sidis, Animate and the Inanimate, cosmology, cosmogony, astrobiology, eternal universe, infinite universe

Visit sidis.net

Key Findings

We analyzed Sidis.net page load time and found that the first response time was 141 ms and then it took 4.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

sidis.net performance score

43

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

72/100

10%

LCP (Largest Contentful Paint)

Value3.2 s

73/100

25%

SI (Speed Index)

Value3.8 s

84/100

10%

TBT (Total Blocking Time)

Value1,570 ms

13/100

30%

CLS (Cumulative Layout Shift)

Value0.909

3/100

15%

TTI (Time to Interactive)

Value7.2 s

50/100

10%

Network Requests Diagram

sidis.net

141 ms

sidis.net

315 ms

btn_donateCC_LG.gif

18 ms

radiotelescope1280b.jpg

230 ms

logo1x.jpg

160 ms

Our browser made a total of 166 requests to load all elements on the main page. We found that 96% of them (159 requests) were addressed to the original Sidis.net, 1% (2 requests) were made to Paypalobjects.com and 1% (2 requests) were made to 0. The less responsive or slowest element that took the longest time to load (382 ms) belongs to the original domain Sidis.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 775.7 kB (25%)

Content Size

3.1 MB

After Optimization

2.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sidis.net main page is 3.1 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. 65% of websites need less resources to load. Images take 2.2 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 194.6 kB

  • Original 227.2 kB
  • After minification 203.8 kB
  • After compression 32.6 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 194.6 kB or 86% of the original size.

Image Optimization

-6%

Potential reduce by 124.9 kB

  • Original 2.2 MB
  • After minification 2.1 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. Sidis images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 254.4 kB

  • Original 387.4 kB
  • After minification 387.3 kB
  • After compression 133.0 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 254.4 kB or 66% of the original size.

CSS Optimization

-83%

Potential reduce by 201.8 kB

  • Original 242.9 kB
  • After minification 242.8 kB
  • After compression 41.0 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. Sidis.net needs all CSS files to be minified and compressed as it can save up to 201.8 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (2%)

Requests Now

162

After Optimization

158

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 162 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sidis. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

sidis.net

sidis.net

141 ms

sidis.net

sidis.net

315 ms

btn_donateCC_LG.gif

btn_donateCC_LG.gif

18 ms

radiotelescope1280b.jpg

radiotelescope1280b.jpg

230 ms

logo1x.jpg

logo1x.jpg

160 ms

pixel.gif

pixel.gif

17 ms

adsbygoogle.js

adsbygoogle.js

159 ms

borispassport3_small.jpg

borispassport3_small.jpg

129 ms

flameanim3.gif

flameanim3.gif

128 ms

blackboard.jpg

blackboard.jpg

128 ms

animbinding67.jpg

animbinding67.jpg

139 ms

bicep2inv.JPG

bicep2inv.JPG

196 ms

qnS4rncZqn8.html

qnS4rncZqn8.html

380 ms

29_nqs6IYvM.html

29_nqs6IYvM.html

164 ms

radiotelescope4.jpg

radiotelescope4.jpg

117 ms

dsgdcover1.jpg

dsgdcover1.jpg

161 ms

darkmatter4.jpg

darkmatter4.jpg

379 ms

animbinding67_small.jpg

animbinding67_small.jpg

173 ms

TScover.jpg

TScover.jpg

374 ms

transdresdustjacketc_small1.jpg

transdresdustjacketc_small1.jpg

375 ms

binding.jpg

binding.jpg

376 ms

Atlantisltr_small.jpg

Atlantisltr_small.jpg

375 ms

sperlingltr4_small.jpg

sperlingltr4_small.jpg

376 ms

peacepath_small.gif

peacepath_small.gif

376 ms

mb020642_small.jpg

mb020642_small.jpg

377 ms

libertarianltr1_small.jpg

libertarianltr1_small.jpg

377 ms

Calend1_small.jpg

Calend1_small.jpg

378 ms

mb032841_small1.jpg

mb032841_small1.jpg

378 ms

rights2a_small.jpg

rights2a_small.jpg

379 ms

rights1_small.jpg

rights1_small.jpg

379 ms

uncon1_small.jpg

uncon1_small.jpg

380 ms

contin2_small.jpg

contin2_small.jpg

379 ms

graychampion_small.jpg

graychampion_small.jpg

381 ms

revolutions1_small.jpg

revolutions1_small.jpg

381 ms

jerseycity_small.jpg

jerseycity_small.jpg

382 ms

railroading_small.gif

railroading_small.gif

355 ms

chekho15_small.jpg

chekho15_small.jpg

356 ms

chekho20_small.jpg

chekho20_small.jpg

356 ms

worker1_small.gif

worker1_small.gif

357 ms

amerlingo_small.jpg

amerlingo_small.jpg

357 ms

gpnews3sm.gif

gpnews3sm.gif

300 ms

courier1775_small.jpg

courier1775_small.jpg

299 ms

contin1_small.jpg

contin1_small.jpg

299 ms

orarch1a_small.jpg

orarch1a_small.jpg

300 ms

aslcover.gif

aslcover.gif

300 ms

gpcover1_small.jpg

gpcover1_small.jpg

290 ms

ad_status.js

ad_status.js

278 ms

cast_sender.js

cast_sender.js

0 ms

cast_sender.js

cast_sender.js

0 ms

www-embed-player-webp-vflt2nyuL.css

www-embed-player-webp-vflt2nyuL.css

303 ms

yrK4EqpSRdoujKQmsJoZ5WaLgeULvcWnibQMQSxOOnM.js

yrK4EqpSRdoujKQmsJoZ5WaLgeULvcWnibQMQSxOOnM.js

233 ms

www-embed-player.js

www-embed-player.js

325 ms

base.js

base.js

378 ms

hesperia_small1.jpg

hesperia_small1.jpg

224 ms

transfers_small.jpg

transfers_small.jpg

37 ms

exambooklet1_small.jpg

exambooklet1_small.jpg

37 ms

transcript1_small.jpg

transcript1_small.jpg

52 ms

huxleyltr_small1.jpg

huxleyltr_small1.jpg

72 ms

inheritancedoc1.jpg

inheritancedoc1.jpg

72 ms

phonebook1_small.jpg

phonebook1_small.jpg

107 ms

dmhelena_small.jpg

dmhelena_small.jpg

121 ms

wjs007sm.jpg

wjs007sm.jpg

144 ms

wjs008sm.jpg

wjs008sm.jpg

121 ms

index.11A.jpg

index.11A.jpg

121 ms

yankee_small1.jpg

yankee_small1.jpg

123 ms

wjs3sm.jpg

wjs3sm.jpg

143 ms

timelife5.jpg

timelife5.jpg

155 ms

wjs003sm.jpg

wjs003sm.jpg

254 ms

wjs002sm.jpg

wjs002sm.jpg

258 ms

wjs1bB.jpg

wjs1bB.jpg

252 ms

wjs20.jpg

wjs20.jpg

252 ms

wjs22.jpg

wjs22.jpg

252 ms

wjs9greekbookcover.jpg

wjs9greekbookcover.jpg

252 ms

wjdrawing.jpg

wjdrawing.jpg

253 ms

wjs005sm.jpg

wjs005sm.jpg

252 ms

wjs006sm.jpg

wjs006sm.jpg

278 ms

WJS150.jpg

WJS150.jpg

252 ms

wjjjj.jpg

wjjjj.jpg

253 ms

wjs6drawing.jpg

wjs6drawing.jpg

253 ms

wjnyt1.gif

wjnyt1.gif

253 ms

wjs8.jpg

wjs8.jpg

261 ms

timeobitphoto.jpg

timeobitphoto.jpg

261 ms

newyorkerdrawaingb.jpg

newyorkerdrawaingb.jpg

261 ms

ripleys1.gif

ripleys1.gif

262 ms

ripleys4.jpg

ripleys4.jpg

275 ms

nytime20.gif

nytime20.gif

281 ms

nytime18.jpg

nytime18.jpg

282 ms

nytime22.gif

nytime22.gif

272 ms

nytime24.jpg

nytime24.jpg

275 ms

BioWil34.gif

BioWil34.gif

273 ms

BioWil32.jpg

BioWil32.jpg

256 ms

BioWil23XLG_small.jpg

BioWil23XLG_small.jpg

265 ms

hqdefault.webp

hqdefault.webp

45 ms

hqdefault.webp

hqdefault.webp

42 ms

BioWil23XLGSCAN2_small.jpg

BioWil23XLGSCAN2_small.jpg

247 ms

nytime14.jpg

nytime14.jpg

224 ms

nytimesbreakdown2comb_small.jpg

nytimesbreakdown2comb_small.jpg

226 ms

BioWil11.jpg

BioWil11.jpg

238 ms

nytime19.gif

nytime19.gif

241 ms

nytime4.jpg

nytime4.jpg

249 ms

BioWil30.jpg

BioWil30.jpg

255 ms

nytime8.jpg

nytime8.jpg

236 ms

BioWil20.jpg

BioWil20.jpg

243 ms

nytime16.jpg

nytime16.jpg

237 ms

nytime36.jpg

nytime36.jpg

143 ms

nytime34.jpg

nytime34.jpg

148 ms

nytime30.jpg

nytime30.jpg

159 ms

BioWil34.jpg

BioWil34.jpg

158 ms

nytime32.gif

nytime32.gif

165 ms

nytime11_small.gif

nytime11_small.gif

170 ms

nytime12_small.jpg

nytime12_small.jpg

175 ms

nytime42.jpg

nytime42.jpg

181 ms

nytime7.gif

nytime7.gif

190 ms

BioWil19.gif

BioWil19.gif

191 ms

nytime20.jpg

nytime20.jpg

198 ms

nytime40.jpg

nytime40.jpg

203 ms

nytime10.jpg

nytime10.jpg

200 ms

BioWil28.jpg

BioWil28.jpg

206 ms

BioWil40.jpg

BioWil40.jpg

216 ms

nytime1_small.jpg

nytime1_small.jpg

217 ms

flameanim3(1).gif

flameanim3(1).gif

222 ms

BioWil13.jpg

BioWil13.jpg

216 ms

nytime46.jpg

nytime46.jpg

216 ms

BioWil26.jpg

BioWil26.jpg

214 ms

nytime50.jpg

nytime50.jpg

224 ms

nytime48.jpg

nytime48.jpg

219 ms

BioWil46.jpg

BioWil46.jpg

224 ms

BioWil48.jpg

BioWil48.jpg

215 ms

BioWil38.jpg

BioWil38.jpg

216 ms

BioWil25.gif

BioWil25.gif

214 ms

nytimesprodigiesparty_small.jpg

nytimesprodigiesparty_small.jpg

219 ms

BioWil44.jpg

BioWil44.jpg

216 ms

BioWil33.gif

BioWil33.gif

217 ms

BioWil24.jpg

BioWil24.jpg

215 ms

BioWil15.jpg

BioWil15.jpg

217 ms

BioWil22_small.gif

BioWil22_small.gif

213 ms

BioWil23_small.gif

BioWil23_small.gif

218 ms

nation1_small.jpg

nation1_small.jpg

217 ms

BioWil6_small.jpg

BioWil6_small.jpg

217 ms

wjsdrawing1Breverse_small.jpg

wjsdrawing1Breverse_small.jpg

216 ms

twig2_small.jpg

twig2_small.jpg

215 ms

wjdoctoredphoto_small.jpg

wjdoctoredphoto_small.jpg

214 ms

newyorkercover1937_08_14_p139.jpg

newyorkercover1937_08_14_p139.jpg

216 ms

legalcase1_small.jpg

legalcase1_small.jpg

216 ms

lament1_small1.jpg

lament1_small1.jpg

217 ms

bostontraveler4b_small2.jpg

bostontraveler4b_small2.jpg

215 ms

eichelbio1_small.jpg

eichelbio1_small.jpg

216 ms

timeobitphoto_small.jpg

timeobitphoto_small.jpg

213 ms

sperling1_small.jpg

sperling1_small.jpg

217 ms

flameanim3(2).gif

flameanim3(2).gif

216 ms

sidisstory.jpg

sidisstory.jpg

215 ms

BuckLt1_small.gif

BuckLt1_small.gif

215 ms

ripleys1_small.gif

ripleys1_small.gif

216 ms

essexlife1_small.jpg

essexlife1_small.jpg

213 ms

ipswichchronicle1_small.jpg

ipswichchronicle1_small.jpg

214 ms

yankee_small.jpg

yankee_small.jpg

214 ms

lilacover_small.jpg

lilacover_small.jpg

214 ms

timelife_small.jpg

timelife_small.jpg

215 ms

WJS500_small.jpg

WJS500_small.jpg

216 ms

flameanim.gif

flameanim.gif

213 ms

portsmouth3_small.jpg

portsmouth3_small.jpg

216 ms

folupa.jpg

folupa.jpg

216 ms

leonscollectionb.jpg

leonscollectionb.jpg

215 ms

scholar_sm(1).gif

scholar_sm(1).gif

216 ms

wamumpattern2.jpg

wamumpattern2.jpg

216 ms

uparrow.gif

uparrow.gif

213 ms

Accessibility Review

sidis.net accessibility score

52

Accessibility Issues

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.

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

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

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

sidis.net best practices score

50

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

sidis.net SEO score

50

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1252

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sidis.net 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 Sidis.net main page’s claimed encoding is windows-1252. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

sidis.net

Open Graph description is not detected on the main page of Sidis. 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: