21.2 sec in total
4.5 sec
16.2 sec
437 ms
Click here to check amazing Openbook content. Otherwise, check out these important facts you probably never knew about openbook.co.kr
Visit openbook.co.krWe analyzed Openbook.co.kr page load time and found that the first response time was 4.5 sec and then it took 16.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
openbook.co.kr performance score
name
value
score
weighting
Value0.6 s
100/100
10%
Value0.9 s
100/100
25%
Value1.7 s
100/100
10%
Value0 ms
100/100
30%
Value0
100/100
15%
Value0.6 s
100/100
10%
4519 ms
1040 ms
1166 ms
1796 ms
1093 ms
Our browser made a total of 75 requests to load all elements on the main page. We found that 8% of them (6 requests) were addressed to the original Openbook.co.kr, 87% (65 requests) were made to Image.swbook.co.kr and 5% (4 requests) were made to Swbook.co.kr. The less responsive or slowest element that took the longest time to load (10.7 sec) relates to the external source Image.swbook.co.kr.
Page size can be reduced by 267.8 kB (15%)
1.7 MB
1.5 MB
In fact, the total size of Openbook.co.kr main page is 1.7 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. 20% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.
Potential reduce by 115.0 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 13.4 kB, which is 11% 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 115.0 kB or 91% of the original size.
Potential reduce by 86.5 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. Openbook images are well optimized though.
Potential reduce by 66.2 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 66.2 kB or 70% of the original size.
Number of requests can be reduced by 14 (19%)
74
60
The browser has sent 74 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Openbook. 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 CSS and as a result speed up the page load time.
openbook.co.kr
4519 ms
openbook.css
1040 ms
opscript.js
1166 ms
jquery-1.4.min.js
1796 ms
top.css
1093 ms
main.css
1640 ms
bottom.css
1603 ms
quick.css
2398 ms
default.js
2644 ms
bnr_customer.gif
896 ms
bar_st.gif
688 ms
logo2.gif
889 ms
search_bar.gif
724 ms
bg_down.gif
725 ms
sw_logo.gif
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bar_bg.gif
887 ms
bar_tit.png
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member.gif
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but1.jpg
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1808 ms
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2020 ms
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link.php
218 ms
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trust_00.gif
1624 ms
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3704 ms
today_bar_bg.gif
3190 ms
list_bg1.png
3410 ms
list_bg2.png
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5160 ms
BT_more.png
3539 ms
bg_footer.gif
3593 ms
bnr_libro.gif
3750 ms
bnr_libpia.gif
3709 ms
bnr_openbook.gif
3866 ms
bg_familysite.png
3920 ms
bg_up.png
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4033 ms
logo_btm.gif
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fooer_banner_inisis.gif
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bg_btm.gif
4879 ms
openbook.co.kr accessibility score
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<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
Image elements do not have [alt] attributes
openbook.co.kr best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
openbook.co.kr SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
N/A
KO
EUC-KR
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Openbook.co.kr can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Korean. Our system also found out that Openbook.co.kr main page’s claimed encoding is euc-kr. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
openbook.co.kr
Open Graph description is not detected on the main page of Openbook. 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: