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new.jove.com screenshot

Report Summary

  • 12

    Performance

    Renders faster than
    25% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

new.jove.com

JoVE | Peer Reviewed Scientific Video Journal - Methods and Protocols

Page Load Speed

1.7 sec in total

First Response

8 ms

Resources Loaded

1.4 sec

Page Rendered

225 ms

new.jove.com screenshot

About Website

Visit new.jove.com now to see the best up-to-date New JoVE content for China and also check out these interesting facts you probably never knew about new.jove.com

JoVE publishes peer-reviewed scientific video protocols to accelerate biological, medical, chemical and physical research. Watch our scientific video articles.

Visit new.jove.com

Key Findings

We analyzed New.jove.com page load time and found that the first response time was 8 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

new.jove.com performance score

12

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value12.4 s

0/100

25%

SI (Speed Index)

Value11.6 s

4/100

10%

TBT (Total Blocking Time)

Value2,400 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.202

61/100

15%

TTI (Time to Interactive)

Value21.6 s

1/100

10%

Network Requests Diagram

new.jove.com

8 ms

www.jove.com

453 ms

gtm.js

290 ms

base.css

9 ms

slick.css

24 ms

Our browser made a total of 128 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original New.jove.com, 51% (65 requests) were made to Jove.com and 10% (13 requests) were made to Cloudfront.jove.com. The less responsive or slowest element that took the longest time to load (633 ms) relates to the external source Cloudfront.jove.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 124.2 kB (3%)

Content Size

3.8 MB

After Optimization

3.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of New.jove.com main page is 3.8 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 3.2 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 75.3 kB

  • Original 91.1 kB
  • After minification 77.1 kB
  • After compression 15.9 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 14.1 kB, which is 15% 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 75.3 kB or 83% of the original size.

Image Optimization

-1%

Potential reduce by 18.5 kB

  • Original 3.2 MB
  • After minification 3.1 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. New JoVE images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 24.4 kB

  • Original 524.8 kB
  • After minification 524.2 kB
  • After compression 500.4 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

-9%

Potential reduce by 6.0 kB

  • Original 65.8 kB
  • After minification 65.8 kB
  • After compression 59.8 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. New.jove.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 88 (76%)

Requests Now

116

After Optimization

28

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 116 CSS, Javascripts, AJAX and image requests in order to completely render the main page of New JoVE. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 51 to 1 for JavaScripts and from 21 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

new.jove.com

new.jove.com

8 ms

www.jove.com

www.jove.com

453 ms

gtm.js

gtm.js

290 ms

base.css

base.css

9 ms

slick.css

slick.css

24 ms

slick-theme.css

slick-theme.css

39 ms

trial.css

trial.css

37 ms

flowplayer.css

flowplayer.css

36 ms

toggles.css

toggles.css

42 ms

toggles-light.css

toggles-light.css

38 ms

mobile-design-footer.css

mobile-design-footer.css

43 ms

cropper.css

cropper.css

47 ms

catalog-article-summary.css

catalog-article-summary.css

46 ms

css

css

57 ms

all.css

all.css

79 ms

home-page.css

home-page.css

46 ms

jquery-3.6.0.min.js

jquery-3.6.0.min.js

49 ms

flowplayer.min.js

flowplayer.min.js

51 ms

hls.min.js

hls.min.js

62 ms

ovp.min.js

ovp.min.js

50 ms

speed.min.js

speed.min.js

50 ms

subtitles.min.js

subtitles.min.js

50 ms

fp-thumbnails.js

fp-thumbnails.js

53 ms

playlist.min.js

playlist.min.js

53 ms

dash.min.js

dash.min.js

118 ms

drm.min.js

drm.min.js

59 ms

keyboard.min.js

keyboard.min.js

61 ms

cuepoints.min.js

cuepoints.min.js

55 ms

analytics.js

analytics.js

49 ms

google-analytics.min.js

google-analytics.min.js

56 ms

bluebird.min.js

bluebird.min.js

67 ms

cropper.js

cropper.js

62 ms

qrcode.js

qrcode.js

170 ms

localization_service.js

localization_service.js

63 ms

optimize.js

optimize.js

174 ms

slick.min.js

slick.min.js

63 ms

jquery.appear.js

jquery.appear.js

64 ms

clipboard.min.js

clipboard.min.js

65 ms

jove.js

jove.js

67 ms

navigation.js

navigation.js

67 ms

skip-link-focus-fix.js

skip-link-focus-fix.js

68 ms

wp-embed.min.js

wp-embed.min.js

68 ms

20267955.js

20267955.js

65 ms

banners.css

banners.css

71 ms

css

css

61 ms

normalized.css

normalized.css

68 ms

jove-theme.css

jove-theme.css

55 ms

jove-grid.css

jove-grid.css

41 ms

body-header.css

body-header.css

52 ms

body-footer.css

body-footer.css

50 ms

sidebar.css

sidebar.css

51 ms

base.js

base.js

47 ms

jove.js

jove.js

135 ms

trial.js

trial.js

72 ms

country-preference.js

country-preference.js

72 ms

jove-home-header.js

jove-home-header.js

72 ms

banners.js

banners.js

124 ms

con_dmarc.php

con_dmarc.php

352 ms

prum.min.js

prum.min.js

197 ms

200708.jpg

200708.jpg

385 ms

counter.php

counter.php

494 ms

stats.js

stats.js

226 ms

search-ajax-loader.gif

search-ajax-loader.gif

63 ms

chevron-down-regular.svg

chevron-down-regular.svg

69 ms

globe-light.svg

globe-light.svg

66 ms

jove-logo-black.svg

jove-logo-black.svg

62 ms

jove-logo-trans.svg

jove-logo-trans.svg

62 ms

search-white.svg

search-white.svg

60 ms

home-play-circle-button-blue.svg

home-play-circle-button-blue.svg

69 ms

home-play-circle-button-lightblue.svg

home-play-circle-button-lightblue.svg

65 ms

jove-logo-white.svg

jove-logo-white.svg

66 ms

new-trial-spinner.svg

new-trial-spinner.svg

67 ms

chevron-right-light.svg

chevron-right-light.svg

206 ms

qr-code.jpg

qr-code.jpg

207 ms

65837.jpg

65837.jpg

488 ms

200710.jpg

200710.jpg

489 ms

200709.jpg

200709.jpg

498 ms

65855.jpg

65855.jpg

497 ms

researcher_video_poster.jpg

researcher_video_poster.jpg

633 ms

educator_video_poster.jpg

educator_video_poster.jpg

629 ms

author_video_poster.jpg

author_video_poster.jpg

633 ms

librarian_video_poster.jpg

librarian_video_poster.jpg

632 ms

twitter-brands_white.svg

twitter-brands_white.svg

503 ms

facebook-square-brands_white.svg

facebook-square-brands_white.svg

504 ms

linkedin-in-brands_white.svg

linkedin-in-brands_white.svg

527 ms

weixin-brands-white.svg

weixin-brands-white.svg

528 ms

KFOlCnqEu92Fr1MmEU9vAA.woff

KFOlCnqEu92Fr1MmEU9vAA.woff

312 ms

KFOmCnqEu92Fr1Me5g.woff

KFOmCnqEu92Fr1Me5g.woff

481 ms

KFOlCnqEu92Fr1MmSU5vAA.woff

KFOlCnqEu92Fr1MmSU5vAA.woff

528 ms

KFOkCnqEu92Fr1MmgWxM.woff

KFOkCnqEu92Fr1MmgWxM.woff

580 ms

KFOlCnqEu92Fr1MmWUlvAA.woff

KFOlCnqEu92Fr1MmWUlvAA.woff

609 ms

KFOlCnqEu92Fr1MmYUtvAA.woff

KFOlCnqEu92Fr1MmYUtvAA.woff

589 ms

collectedforms.js

collectedforms.js

233 ms

conversations-embed.js

conversations-embed.js

232 ms

banner.js

banner.js

233 ms

web-interactives-embed.js

web-interactives-embed.js

282 ms

fb.js

fb.js

282 ms

20267955.js

20267955.js

348 ms

leadflows.js

leadflows.js

234 ms

user-shield-regular.svg

user-shield-regular.svg

159 ms

times-light.svg

times-light.svg

157 ms

ajax-loader.gif

ajax-loader.gif

83 ms

fa-solid-900.woff

fa-solid-900.woff

152 ms

fa-regular-400.woff

fa-regular-400.woff

219 ms

fa-light-300.woff

fa-light-300.woff

220 ms

js

js

160 ms

collect

collect

60 ms

collect

collect

114 ms

destination

destination

181 ms

insight.min.js

insight.min.js

307 ms

fbevents.js

fbevents.js

171 ms

uwt.js

uwt.js

170 ms

destination

destination

171 ms

91473f513de9a159.min.js

91473f513de9a159.min.js

161 ms

process.php

process.php

50 ms

collect

collect

304 ms

adsct

adsct

263 ms

adsct

adsct

262 ms

sync

sync

82 ms

adsct

adsct

212 ms

adsct

adsct

275 ms

insight.old.min.js

insight.old.min.js

15 ms

sync

sync

122 ms

tap.php

tap.php

124 ms

ga-audiences

ga-audiences

112 ms

rum

rum

26 ms

ip.json

ip.json

111 ms

log

log

15 ms

Accessibility Review

new.jove.com accessibility score

85

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.

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

High

Some elements have a [tabindex] value greater than 0

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

High

Links do not have a discernible name

Best Practices

new.jove.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

new.jove.com SEO score

79

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

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 New.jove.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 New.jove.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

new.jove.com

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