Tools & Wizards About Us
aanda.org screenshot

Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

aanda.org

Astronomy & Astrophysics (A&A)

Page Load Speed

14.1 sec in total

First Response

212 ms

Resources Loaded

13.7 sec

Page Rendered

192 ms

aanda.org screenshot

About Website

Visit aanda.org now to see the best up-to-date Aanda content for China and also check out these interesting facts you probably never knew about aanda.org

Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics

Visit aanda.org

Key Findings

We analyzed Aanda.org page load time and found that the first response time was 212 ms and then it took 13.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

aanda.org performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.9 s

4/100

10%

LCP (Largest Contentful Paint)

Value15.2 s

0/100

25%

SI (Speed Index)

Value17.8 s

0/100

10%

TBT (Total Blocking Time)

Value1,060 ms

25/100

30%

CLS (Cumulative Layout Shift)

Value0.141

78/100

15%

TTI (Time to Interactive)

Value16.4 s

5/100

10%

Network Requests Diagram

aanda.org

212 ms

www.aanda.org

3128 ms

jquery.multiselect.css

38 ms

jquery-ui.css

57 ms

accueil.css

38 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 87% of them (46 requests) were addressed to the original Aanda.org, 8% (4 requests) were made to Ajax.googleapis.com and 6% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (10.2 sec) belongs to the original domain Aanda.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 322.5 kB (53%)

Content Size

609.0 kB

After Optimization

286.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Aanda.org main page is 609.0 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. 50% of websites need less resources to load. Images take 258.8 kB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 104.1 kB

  • Original 116.5 kB
  • After minification 88.3 kB
  • After compression 12.3 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 28.2 kB, which is 24% 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 104.1 kB or 89% of the original size.

Image Optimization

-22%

Potential reduce by 57.0 kB

  • Original 258.8 kB
  • After minification 201.9 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, Aanda needs image optimization as it can save up to 57.0 kB or 22% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-60%

Potential reduce by 74.0 kB

  • Original 122.6 kB
  • After minification 107.4 kB
  • After compression 48.6 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 74.0 kB or 60% of the original size.

CSS Optimization

-79%

Potential reduce by 87.4 kB

  • Original 111.1 kB
  • After minification 96.4 kB
  • After compression 23.7 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. Aanda.org needs all CSS files to be minified and compressed as it can save up to 87.4 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (39%)

Requests Now

51

After Optimization

31

  • Images
  • JavaScript
  • CSS

The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Aanda. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

aanda.org

aanda.org

212 ms

www.aanda.org

www.aanda.org

3128 ms

jquery.multiselect.css

jquery.multiselect.css

38 ms

jquery-ui.css

jquery-ui.css

57 ms

accueil.css

accueil.css

38 ms

cookie.css

cookie.css

45 ms

jquery.qtip.min.css

jquery.qtip.min.css

50 ms

list.css

list.css

52 ms

toc.css

toc.css

57 ms

solr.css

solr.css

60 ms

jquery.min.js

jquery.min.js

71 ms

jquerynoconflict.js

jquerynoconflict.js

58 ms

jquery-ui.min.js

jquery-ui.min.js

98 ms

jquery.multiselect.min.js

jquery.multiselect.min.js

67 ms

jquery.qtip.min.js

jquery.qtip.min.js

94 ms

list.js

list.js

87 ms

ac.js

ac.js

88 ms

commun.css

commun.css

63 ms

open_up.css

open_up.css

65 ms

aa.css

aa.css

88 ms

common.js

common.js

89 ms

jquery.magnific-popup.css

jquery.magnific-popup.css

87 ms

jquery.magnific-popup.min.js

jquery.magnific-popup.min.js

93 ms

ga.js

ga.js

96 ms

logo_aa.png

logo_aa.png

87 ms

subs.png

subs.png

37 ms

edp_published.png

edp_published.png

38 ms

ico_home.png

ico_home.png

36 ms

social24.png

social24.png

38 ms

201526639.jpg

201526639.jpg

39 ms

201628133.jpg

201628133.jpg

71 ms

201526853.jpg

201526853.jpg

46 ms

201526988.jpg

201526988.jpg

72 ms

btn_swya.png

btn_swya.png

50 ms

photohome587-.gif

photohome587-.gif

5171 ms

ico_open.png

ico_open.png

46 ms

li_4_777.png

li_4_777.png

62 ms

photohome586-.gif

photohome586-.gif

5143 ms

photohome585-.gif

photohome585-.gif

6222 ms

photohome584-.gif

photohome584-.gif

10197 ms

bg_hl.png

bg_hl.png

117 ms

states_32.png

states_32.png

95 ms

2016.gif

2016.gif

120 ms

aa_cover_part1.png

aa_cover_part1.png

142 ms

aa_cover_part2.png

aa_cover_part2.png

145 ms

ico_oa.png

ico_oa.png

166 ms

epjconf_aa.gif

epjconf_aa.gif

194 ms

5_open_access.jpg

5_open_access.jpg

194 ms

rss_16.png

rss_16.png

215 ms

shadow.png

shadow.png

216 ms

ui-bg_flat_75_ffffff_40x100.png

ui-bg_flat_75_ffffff_40x100.png

31 ms

__utm.gif

__utm.gif

17 ms

__utm.gif

__utm.gif

12 ms

Accessibility Review

aanda.org accessibility score

83

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

Links do not have a discernible name

Best Practices

aanda.org 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

High

Page has valid source maps

SEO Factors

aanda.org SEO score

76

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

High

Tap targets are not sized appropriately

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 Aanda.org 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 Aanda.org 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

aanda.org

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