Tools & Wizards About Us
5idev.com screenshot

Report Summary

  • 78

    Performance

    Renders faster than
    85% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 95

    SEO

    Google-friendlier than
    90% of websites

5idev.com

Web开发在线资教程 - 我爱开发网

Page Load Speed

59.4 sec in total

First Response

3.8 sec

Resources Loaded

55.4 sec

Page Rendered

237 ms

5idev.com screenshot

About Website

Click here to check amazing 5 Idev content for China. Otherwise, check out these important facts you probably never knew about 5idev.com

最易学的个性化Web开发在线教学网站。提供PHP+MySQL教程、ThinkPHP教程、XHTML教程、DIV+CSS教程、JavaScript教程(JQuery及AJAX)，从入门到精通。

Visit 5idev.com

Key Findings

We analyzed 5idev.com page load time and found that the first response time was 3.8 sec and then it took 55.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 3 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

5idev.com performance score

78

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

58/100

10%

LCP (Largest Contentful Paint)

Value3.6 s

61/100

25%

SI (Speed Index)

Value7.7 s

24/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.7 s

97/100

10%

Network Requests Diagram

5idev.com

3766 ms

www.5idev.com

13518 ms

default.css

2528 ms

c.js

902 ms

logo.gif

2922 ms

Our browser made a total of 50 requests to load all elements on the main page. We found that 38% of them (19 requests) were addressed to the original 5idev.com, 16% (8 requests) were made to Cpro.baidustatic.com and 10% (5 requests) were made to Pos.baidu.com. The less responsive or slowest element that took the longest time to load (20.1 sec) relates to the external source T12.baidu.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 282.1 kB (48%)

Content Size

591.6 kB

After Optimization

309.5 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of 5idev.com main page is 591.6 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. 25% of websites need less resources to load. Javascripts take 356.3 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 17.2 kB

  • Original 23.7 kB
  • After minification 23.4 kB
  • After compression 6.5 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 17.2 kB or 73% of the original size.

Image Optimization

-3%

Potential reduce by 6.8 kB

  • Original 211.6 kB
  • After minification 204.8 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. 5 Idev images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 258.1 kB

  • Original 356.3 kB
  • After minification 356.3 kB
  • After compression 98.3 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 258.1 kB or 72% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (55%)

Requests Now

44

After Optimization

20

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 5 Idev. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

5idev.com

5idev.com

3766 ms

www.5idev.com

www.5idev.com

13518 ms

default.css

default.css

2528 ms

c.js

c.js

902 ms

logo.gif

logo.gif

2922 ms

c.js

c.js

4269 ms

stat.php

stat.php

879 ms

search_bottom.gif

search_bottom.gif

438 ms

corner_top.gif

corner_top.gif

809 ms

corner_bottom.gif

corner_bottom.gif

874 ms

arrow_g.gif

arrow_g.gif

888 ms

w3c_logo.gif

w3c_logo.gif

2548 ms

php_logo.gif

php_logo.gif

894 ms

tp_logo.png

tp_logo.png

3569 ms

kcsm

kcsm

900 ms

search_bg.gif

search_bg.gif

1313 ms

r_bg.gif

r_bg.gif

1319 ms

t_bg.gif

t_bg.gif

2551 ms

icon_red.gif

icon_red.gif

2746 ms

icon_brown.gif

icon_brown.gif

1726 ms

dotted_line.gif

dotted_line.gif

2124 ms

b_bg.gif

b_bg.gif

2546 ms

kcsm

kcsm

1968 ms

adx.php

adx.php

721 ms

reduce_bd-logo1_oper.png

reduce_bd-logo1_oper.png

500 ms

u=1787631204,2571553833&fm=76

u=1787631204,2571553833&fm=76

8964 ms

u=1910749904,2805474787&fm=76

u=1910749904,2805474787&fm=76

20061 ms

u=3368951556,4043839689&fm=76

u=3368951556,4043839689&fm=76

3648 ms

u=1608278441,2387701690&fm=76

u=1608278441,2387701690&fm=76

20055 ms

u=742424360,1072301844&fm=76

u=742424360,1072301844&fm=76

8988 ms

kcsm

kcsm

425 ms

logo_bottom.gif

logo_bottom.gif

401 ms

stat.htm

stat.htm

543 ms

core.php

core.php

1940 ms

kcsm

kcsm

7425 ms

9.gif

9.gif

1934 ms

pic.gif

pic.gif

1442 ms

h.js

h.js

2198 ms

cpro.js

cpro.js

2203 ms

adx.php

adx.php

541 ms

icon_12px.png

icon_12px.png

503 ms

app.gif

app.gif

1121 ms

21.gif

21.gif

989 ms

hm.gif

hm.gif

389 ms

closefeedback.min.js

closefeedback.min.js

551 ms

reduce_promotion_oper.png

reduce_promotion_oper.png

561 ms

bd_logo.png

bd_logo.png

555 ms

bg_rb.png

bg_rb.png

570 ms

o.htm

o.htm

20020 ms

hm.gif

hm.gif

779 ms

Accessibility Review

5idev.com accessibility score

73

Accessibility Issues

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

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>).

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

5idev.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

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

5idev.com SEO score

95

Search Engine Optimization Advices

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

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 5idev.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that 5idev.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

5idev.com

Open Graph description is not detected on the main page of 5 Idev. 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: