Tools & Wizards About Us
scientific-american.com-sub.biz screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

scientific-american.com-sub.biz

Magazine Discount Center

Page Load Speed

3.6 sec in total

First Response

316 ms

Resources Loaded

2.9 sec

Page Rendered

324 ms

scientific-american.com-sub.biz screenshot

About Website

Welcome to scientific-american.com-sub.biz homepage info - get ready to check Scientific American Com Sub best content for United States right away, or after learning these important things about scientific-american.com-sub.biz

Scientific American Magazine Subscriptions, Renewals, and Gifts Options at Discounted Prices. Risk Free 90-Day Money Back Guarantee!

Visit scientific-american.com-sub.biz

Key Findings

We analyzed Scientific-american.com-sub.biz page load time and found that the first response time was 316 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

scientific-american.com-sub.biz performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

19/100

10%

LCP (Largest Contentful Paint)

Value17.5 s

0/100

25%

SI (Speed Index)

Value5.7 s

51/100

10%

TBT (Total Blocking Time)

Value360 ms

72/100

30%

CLS (Cumulative Layout Shift)

Value0.894

3/100

15%

TTI (Time to Interactive)

Value11.8 s

17/100

10%

Network Requests Diagram

scientific-american.com-sub.biz

316 ms

30 ms

123 ms

66 ms

productpage.css

53 ms

Our browser made a total of 92 requests to load all elements on the main page. We found that 47% of them (43 requests) were addressed to the original Scientific-american.com-sub.biz, 9% (8 requests) were made to Secure.adnxs.com and 5% (5 requests) were made to D.adroll.com. The less responsive or slowest element that took the longest time to load (557 ms) relates to the external source Bat.bing.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 100.3 kB (37%)

Content Size

270.3 kB

After Optimization

170.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Scientific-american.com-sub.biz main page is 270.3 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. 30% of websites need less resources to load. Javascripts take 88.9 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 70.3 kB

  • Original 85.4 kB
  • After minification 59.2 kB
  • After compression 15.1 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 26.2 kB, which is 31% 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 70.3 kB or 82% of the original size.

Image Optimization

-15%

Potential reduce by 12.3 kB

  • Original 82.3 kB
  • After minification 70.0 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. Obviously, Scientific American Com Sub needs image optimization as it can save up to 12.3 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-8%

Potential reduce by 7.0 kB

  • Original 88.9 kB
  • After minification 86.9 kB
  • After compression 81.8 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

-78%

Potential reduce by 10.7 kB

  • Original 13.8 kB
  • After minification 13.7 kB
  • After compression 3.1 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. Scientific-american.com-sub.biz needs all CSS files to be minified and compressed as it can save up to 10.7 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 41 (50%)

Requests Now

82

After Optimization

41

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 82 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Scientific American Com Sub. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

scientific-american.com-sub.biz

scientific-american.com-sub.biz

316 ms

30 ms

123 ms

66 ms

productpage.css

productpage.css

53 ms

getthawteseal

getthawteseal

86 ms

conversion.js

conversion.js

54 ms

analytics.js

analytics.js

226 ms

13.gif

13.gif

411 ms

getthawteseal

getthawteseal

261 ms

blue-seal-200-42-magazine-discount-center-122119.png

blue-seal-200-42-magazine-discount-center-122119.png

410 ms

352 ms

bat.js

bat.js

557 ms

fbevents.js

fbevents.js

414 ms

spx

spx

434 ms

background-purple.png

background-purple.png

110 ms

90dayriskfree-corner.png

90dayriskfree-corner.png

110 ms

fc12cc732a6095f1151ae8714c55e232.jpg

fc12cc732a6095f1151ae8714c55e232.jpg

227 ms

54f638f05df5c074bbc072b820c35f0d.gif

54f638f05df5c074bbc072b820c35f0d.gif

213 ms

try-risk-free-90day.jpg

try-risk-free-90day.jpg

153 ms

bestseller.png

bestseller.png

150 ms

subscribe-now.png

subscribe-now.png

151 ms

riskfree90days.jpg

riskfree90days.jpg

151 ms

giftsubscription.png

giftsubscription.png

211 ms

renewbutton.png

renewbutton.png

197 ms

greencheckbox.png

greencheckbox.png

203 ms

cc_visa.png

cc_visa.png

201 ms

cc_mastercard.png

cc_mastercard.png

244 ms

cc_american_express.png

cc_american_express.png

252 ms

cc_discover.png

cc_discover.png

248 ms

128bitencryption.png

128bitencryption.png

242 ms

54f638f05df5c074bbc072b820c35f0d.gif

54f638f05df5c074bbc072b820c35f0d.gif

243 ms

grayplus.gif

grayplus.gif

241 ms

39c51ef149818a34ca131c8469c0b34a.jpg

39c51ef149818a34ca131c8469c0b34a.jpg

266 ms

add-combo-lg.png

add-combo-lg.png

260 ms

purplegradient.png

purplegradient.png

261 ms

rr_09e1a15b3b2d6bdb661d523f6ba1c3b9.jpg

rr_09e1a15b3b2d6bdb661d523f6ba1c3b9.jpg

257 ms

rr_b1f57714715e70b36de63db11593015e.jpg

rr_b1f57714715e70b36de63db11593015e.jpg

254 ms

rr_171654e32a31022293e8f27d6645b3c3.jpg

rr_171654e32a31022293e8f27d6645b3c3.jpg

255 ms

rr_ca6df54819aadb9ac12abb635759ea00.jpg

rr_ca6df54819aadb9ac12abb635759ea00.jpg

298 ms

rr_16010ec46b3c4056dd4b229aaca52721.jpg

rr_16010ec46b3c4056dd4b229aaca52721.jpg

296 ms

rr_83ebbe1a0e1548253f2ac600dd729f48.jpg

rr_83ebbe1a0e1548253f2ac600dd729f48.jpg

296 ms

rr_b9131ab8e01f8bc9af49ca48e5f0fa21.jpg

rr_b9131ab8e01f8bc9af49ca48e5f0fa21.jpg

296 ms

rr_138d21faecc44f343596d422e01e13cb.jpg

rr_138d21faecc44f343596d422e01e13cb.jpg

295 ms

rr_cfaaed9230cffc7a08f50af99341668a.jpg

rr_cfaaed9230cffc7a08f50af99341668a.jpg

296 ms

star1.png

star1.png

322 ms

subscribe-similar.png

subscribe-similar.png

320 ms

b1aac06d28df25e9bf478c17ff07d121.jpg

b1aac06d28df25e9bf478c17ff07d121.jpg

324 ms

up-arrow.png

up-arrow.png

318 ms

creditcardsaccepted.png

creditcardsaccepted.png

327 ms

popup_90day.png

popup_90day.png

323 ms

collect

collect

71 ms

collect

collect

146 ms

overlay.png

overlay.png

255 ms

ui-bg_flat_75_ffffff_40x100.png

ui-bg_flat_75_ffffff_40x100.png

248 ms

60 ms

100 ms

118 ms

st

st

173 ms

gs

gs

184 ms

st

st

112 ms

generic

generic

34 ms

generic

generic

5 ms

magazinediscountcenter.jsp

magazinediscountcenter.jsp

298 ms

roundtrip.js

roundtrip.js

144 ms

4PROBX6ONJGPZIPREJV7VK.js

4PROBX6ONJGPZIPREJV7VK.js

28 ms

out

out

36 ms

44 ms

42 ms

51 ms

35 ms

48 ms

out

out

51 ms

55 ms

53 ms

122 ms

u.php

u.php

110 ms

adsct

adsct

205 ms

sync

sync

152 ms

pixel

pixel

165 ms

bounce

bounce

62 ms

bounce

bounce

46 ms

bounce

bounce

45 ms

bounce

bounce

56 ms

bounce

bounce

28 ms

bounce

bounce

28 ms

bounce

bounce

34 ms

sd

sd

24 ms

377928.gif

377928.gif

20 ms

bounce

bounce

31 ms

in

in

8 ms

tap.php

tap.php

42 ms

Accessibility Review

scientific-american.com-sub.biz accessibility score

70

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.

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

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

Image elements do not have [alt] attributes

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

scientific-american.com-sub.biz 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

General

Impact

Issue

Low

Detected JavaScript libraries

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

scientific-american.com-sub.biz SEO score

82

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

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Scientific-american.com-sub.biz can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Scientific-american.com-sub.biz 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

scientific-american.com-sub.biz

Open Graph description is not detected on the main page of Scientific American Com Sub. 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: