Tools & Wizards About Us
serfeder.com screenshot

Report Summary

  • 53

    Performance

    Renders faster than
    71% of other websites

  • 42

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

serfeder.com

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Page Load Speed

2.7 sec in total

First Response

560 ms

Resources Loaded

2 sec

Page Rendered

181 ms

serfeder.com screenshot

About Website

Visit serfeder.com now to see the best up-to-date Serfeder content and also check out these interesting facts you probably never knew about serfeder.com

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Visit serfeder.com

Key Findings

We analyzed Serfeder.com page load time and found that the first response time was 560 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

serfeder.com performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

49/100

10%

LCP (Largest Contentful Paint)

Value16.6 s

0/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.111

87/100

15%

TTI (Time to Interactive)

Value22.8 s

1/100

10%

Network Requests Diagram

serfeder.com

560 ms

style.css

570 ms

1441506954.jpg

787 ms

wrapper_bg.png

178 ms

header.jpg

848 ms

Our browser made a total of 11 requests to load all elements on the main page. We found that all of those requests were addressed to Serfeder.com and no external sources were called. The less responsive or slowest element that took the longest time to load (848 ms) belongs to the original domain Serfeder.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 47.5 kB (35%)

Content Size

136.0 kB

After Optimization

88.5 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Serfeder.com main page is 136.0 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Images take 83.8 kB which makes up the majority of the site volume.

HTML Optimization

-60%

Potential reduce by 1.9 kB

  • Original 3.2 kB
  • After minification 2.7 kB
  • After compression 1.3 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 514 B, which is 16% 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 1.9 kB or 60% of the original size.

Image Optimization

-4%

Potential reduce by 3.6 kB

  • Original 83.8 kB
  • After minification 80.2 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. Serfeder images are well optimized though.

CSS Optimization

-86%

Potential reduce by 42.0 kB

  • Original 49.0 kB
  • After minification 33.9 kB
  • After compression 7.0 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. Serfeder.com needs all CSS files to be minified and compressed as it can save up to 42.0 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (50%)

Requests Now

10

After Optimization

5

  • Images
  • CSS

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

Network Requests Diagram

serfeder.com

serfeder.com

560 ms

style.css

style.css

570 ms

1441506954.jpg

1441506954.jpg

787 ms

wrapper_bg.png

wrapper_bg.png

178 ms

header.jpg

header.jpg

848 ms

h3_bg.png

h3_bg.png

349 ms

h3.png

h3.png

354 ms

pagetop_button.png

pagetop_button.png

355 ms

menu_h4_bg_b.png

menu_h4_bg_b.png

373 ms

menu_h4_bg.png

menu_h4_bg.png

403 ms

footer_bg.png

footer_bg.png

517 ms

Accessibility Review

serfeder.com accessibility score

42

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

serfeder.com 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

serfeder.com SEO score

85

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

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

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Serfeder.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed Japanese language. Our system also found out that Serfeder.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

serfeder.com

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