Access 17u.net. 同程旅行_旅游_旅游线路_旅行_出国旅游_自驾游_周边游

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value12.5 s

0/100

25%

SI (Speed Index)

Value12.8 s

2/100

10%

TBT (Total Blocking Time)

Value2,860 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value13.9 s

10/100

10%

www.17u.net

2529 ms

1228 ms

2310 ms

1717 ms

1355 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 4% of them (3 requests) were addressed to the original 17u.net, 57% (43 requests) were made to Upload.17u.net and 28% (21 requests) were made to Img1.40017.cn. The less responsive or slowest element that took the longest time to load (20.5 sec) relates to the external source Upload.17u.net.

Content Size

1.2 MB

After Optimization

926.0 kB

In fact, the total size of 17u.net main page is 1.2 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. 30% of websites need less resources to load. Images take 869.0 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 88.8 kB

Original 102.5 kB
After minification 76.3 kB
After compression 13.7 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 26.2 kB, which is 26% 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 88.8 kB or 87% of the original size.

Image Optimization

-3%

Potential reduce by 26.8 kB

Original 869.0 kB
After minification 842.3 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. 17 U images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 91.3 kB

Original 130.6 kB
After minification 115.0 kB
After compression 39.3 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 91.3 kB or 70% of the original size.

CSS Optimization

-79%

Potential reduce by 116.4 kB

Original 147.1 kB
After minification 125.0 kB
After compression 30.7 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. 17u.net needs all CSS files to be minified and compressed as it can save up to 116.4 kB or 79% of the original size.

Requests Now

After Optimization

The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 17 U. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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 17u.net 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 17u.net 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

17u.net

Open Graph description is not detected on the main page of 17 U. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

同程旅行_旅游_旅游线路_旅行_出国旅游_自驾游_周边游_旅游网站

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

www.17u.net

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

www.17u.net

comm.png

2015040908564654868.jpg

net_logo.png

search_bg.png

search_border_left.png

search_border_split.png

main_nav_left.png

main_nav_center.png

main_nav_right.png

sec_nav_bg.png

index.png

transparent_loading_v2.gif

bevel.png

partner-company.png

more-prower.png

back-top.png

cn_17u.png

com_17u.png

net17u_new.png

2015090217485781000.jpg

2015122213492937831.png

2016032515453955125.jpg

201301020857505674.jpg

201510190334303336.jpg

201504070924328137.jpg

201304040303288245.jpg

2012040518455920154.jpg

201603070344578581.jpg

2007070914373716558.jpg

2012080514484945114.jpg

201312111143242705.jpg

201504221138516533.jpg

2015091011382693808.png

2015083117330011452.png

2015052117330946001.jpg

2015060215134138545.png

201601110452527569.jpg

201501070228306454.jpg

2009073017580673754.jpg

2009073018021678643.jpg

2009073018034484638.jpg

2010040817294437882.jpg

2011021417411078529.gif

2011021417414754688.gif

2011021417421292651.gif

2011021417424898849.gif