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prola.aps.org screenshot

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

prola.aps.org

Physical Review Journals Archive

Page Load Speed

1.3 sec in total

First Response

10 ms

Resources Loaded

1.1 sec

Page Rendered

215 ms

prola.aps.org screenshot

About Website

Welcome to prola.aps.org homepage info - get ready to check Prola Aps best content for China right away, or after learning these important things about prola.aps.org

Physical Review Journals Archive

Visit prola.aps.org

Key Findings

We analyzed Prola.aps.org page load time and found that the first response time was 10 ms and then it took 1.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

prola.aps.org performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

48/100

10%

LCP (Largest Contentful Paint)

Value3.5 s

63/100

25%

SI (Speed Index)

Value4.5 s

72/100

10%

TBT (Total Blocking Time)

Value1,050 ms

25/100

30%

CLS (Cumulative Layout Shift)

Value0.049

99/100

15%

TTI (Time to Interactive)

Value7.7 s

45/100

10%

Network Requests Diagram

prola.aps.org

10 ms

91 ms

archive-f9b3bbc5.css.gz

46 ms

modernizr-4e3616e6.custom.99321.js.gz

71 ms

embed.js

69 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that 4% of them (1 request) were addressed to the original Prola.aps.org, 52% (13 requests) were made to D22izw7byeupn1.cloudfront.net and 8% (2 requests) were made to D1bxh8uas1mnw7.cloudfront.net. The less responsive or slowest element that took the longest time to load (761 ms) relates to the external source Cdn.mathjax.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 854.8 kB (60%)

Content Size

1.4 MB

After Optimization

577.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Prola.aps.org main page is 1.4 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. 55% of websites need less resources to load. Javascripts take 911.5 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 15.1 kB

  • Original 22.0 kB
  • After minification 21.9 kB
  • After compression 6.9 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. 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 15.1 kB or 69% of the original size.

Image Optimization

-12%

Potential reduce by 33.8 kB

  • Original 290.8 kB
  • After minification 257.0 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, Prola Aps needs image optimization as it can save up to 33.8 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-69%

Potential reduce by 630.0 kB

  • Original 911.5 kB
  • After minification 904.5 kB
  • After compression 281.5 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 630.0 kB or 69% of the original size.

CSS Optimization

-84%

Potential reduce by 175.9 kB

  • Original 208.3 kB
  • After minification 208.2 kB
  • After compression 32.4 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. Prola.aps.org needs all CSS files to be minified and compressed as it can save up to 175.9 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (50%)

Requests Now

18

After Optimization

9

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Prola Aps. 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 as a result speed up the page load time.

Network Requests Diagram

prola.aps.org

prola.aps.org

10 ms

91 ms

archive-f9b3bbc5.css.gz

archive-f9b3bbc5.css.gz

46 ms

modernizr-4e3616e6.custom.99321.js.gz

modernizr-4e3616e6.custom.99321.js.gz

71 ms

embed.js

embed.js

69 ms

MathJax.js

MathJax.js

761 ms

vendor-5e452649.js.gz

vendor-5e452649.js.gz

67 ms

app-30f01125.js.gz

app-30f01125.js.gz

44 ms

search-0e9b52dc.js.gz

search-0e9b52dc.js.gz

68 ms

altmetric_badges-98e4a0c5363439e08b1f025f231428bc.js

altmetric_badges-98e4a0c5363439e08b1f025f231428bc.js

34 ms

0.png

0.png

102 ms

analytics.min.js

analytics.min.js

45 ms

aps-logo.svg

aps-logo.svg

76 ms

Black_Hole_Merger400.png

Black_Hole_Merger400.png

24 ms

PRL50Logo.png

PRL50Logo.png

23 ms

p

p

461 ms

analytics.js

analytics.js

26 ms

mixpanel-2-latest.min.js

mixpanel-2-latest.min.js

8 ms

65 ms

collect

collect

12 ms

ProximaNova-Reg-webfont.woff

ProximaNova-Reg-webfont.woff

18 ms

ProximaNova-Light-webfont.woff

ProximaNova-Light-webfont.woff

4 ms

ProximaNova-Bold-webfont.woff

ProximaNova-Bold-webfont.woff

18 ms

ProximaNova-Xbold-webfont.woff

ProximaNova-Xbold-webfont.woff

56 ms

foundation-icons.woff

foundation-icons.woff

55 ms

Accessibility Review

prola.aps.org accessibility score

69

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Heading elements are not in a sequentially-descending order

Best Practices

prola.aps.org best practices score

75

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

prola.aps.org SEO score

69

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

High

Page is blocked from indexing

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 Prola.aps.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 Prola.aps.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

prola.aps.org

Open Graph data is detected on the main page of Prola Aps. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: