las.ac.cn

中国科学院文献情报中心

How popular is las.ac.cn?

This table shows the popularity of las.ac.cn relative to ther sites.
DateAlexa RankChange
Dec-15-2018 N/AN/A
Dec-14-2018 N/AN/A
Dec-13-2018 83,709-43,407
Dec-12-2018 40,302N/A
Dec-11-2018 N/AN/A
Dec-10-2018 27,4143,989
Dec-09-2018 31,403-7,076

las.ac.cn alexa rank history


What does Alexa Rank mean?
Alexa rank is calculated using a combination of the estimated average daily unique visitors to the site and the estimated number of pageviews on the site. The site with the highest combination of unique visitors and pageviews is ranked as #1

Compare las.ac.cn alexa rank with other website rank

las.ac.cn

las.ac.cn whois

Domain Name: las.ac.cn
ROID: 20021209s10071s00000955-cn
Domain Status: ok
Registrant ID: c1268456239762
Registrant: 中国科学院文献情报中心
Registrant Contact Email: liuh@mail.las.ac.cn
Sponsoring Registrar: 北京中科三方网络技术有限公司*
Name Server: bib10.las.ac.cn
Name Server: gate.las.ac.cn
Registration Time: 1997-01-05 00:00:00
Expiration Time: 2027-07-01 00:00:00
DNSSEC: unsigned

las.ac.cn server information

las.ac.cn desktop page speed rank

Site Title: 中国科学院文献情报中心


Las.ac.cn Desktop Speed: 39/100

Las.ac.cn Desktop Speed Test Quick Summary:

60 Enable compression

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Enable compression for the following resources to reduce their transfer size by 580.7KiB (68% reduction).

Compressing http://www.las.ac.cn/script_discovery/jquery-1.8.2.js could save 183.3KiB (70% reduction).
Compressing http://www.las.ac.cn/script_discovery/d3.js could save 95.2KiB (65% reduction).
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Compressing http://www.las.ac.cn/css_discovery/index.css could save 20.4KiB (75% reduction).
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58 Optimize images

Properly formatting and compressing images can save many bytes of data.


Optimize the following images to reduce their size by 557.6KiB (94% reduction).

Compressing http://www.las.ac.cn/images_discovery/icon-arxis.gif could save 549.4KiB (99% reduction).
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25 Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.


Leverage browser caching for the following cacheable resources:

http://www.las.ac.cn/css_discovery/css.css (24 hours)
http://www.las.ac.cn/css_discovery/index.css (24 hours)
http://www.las.ac.cn/css_discovery/main.css (24 hours)
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16 Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.


Minify JavaScript for the following resources to reduce their size by 154.5KiB (36% reduction).

Minifying http://www.las.ac.cn/script_discovery/jquery-1.8.2.js could save 120.4KiB (47% reduction).
Minifying http://www.las.ac.cn/script_discovery/summon-autocomplete.js could save 14.9KiB (12% reduction).
Minifying http://www.las.ac.cn/script_discovery/select.js could save 7.2KiB (65% reduction).
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Minifying http://www.las.ac.cn/script_discovery/passport.js could save 2.5KiB (55% reduction).
Minifying http://www.las.ac.cn/script_discovery/auto-complete.js could save 1.7KiB (27% reduction).
Minifying http://www.las.ac.cn/script_discovery/index.js could save 828B (34% reduction).

12 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 14 blocking script resources and 9 blocking CSS resources. This causes a delay in rendering your page.


None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.


Remove render-blocking JavaScript:

http://www.las.ac.cn/script_discovery/jquery-1.8.2.js
http://www.las.ac.cn/script_discovery/jquery-1.8.2.min.js
http://www.las.ac.cn/script_discovery/index.js
http://www.las.ac.cn/script_discovery/tabs_bank.js
http://www.las.ac.cn/script_discovery/jquery.js
http://www.las.ac.cn/script_discovery/search.js
http://www.las.ac.cn/script_discovery/auto-complete.js
http://www.las.ac.cn/script_discovery/base.js
http://www.las.ac.cn/script_discovery/select.js
http://www.las.ac.cn/script_discovery/passport.js
http://www.las.ac.cn/script_discovery/d3.js
http://www.las.ac.cn/script_discovery/unicode.js
http://www.las.ac.cn/script_discovery/d3.layout.cloud.js
http://www.las.ac.cn/script_discovery/cloudself.js

Optimize CSS Delivery of the following:

http://www.las.ac.cn/css_discovery/css.css
http://www.las.ac.cn/css_discovery/menu.css
http://www.las.ac.cn/css_discovery/search.css
http://www.las.ac.cn/css_discovery/css.css
http://www.las.ac.cn/css_discovery/menu.css
http://www.las.ac.cn/css_discovery/public.css
http://www.las.ac.cn/css_discovery/main.css
http://www.las.ac.cn/css_discovery/index.css
http://www.las.ac.cn/css_discovery/summon-autocomplete.css

1 Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.


Minify CSS for the following resources to reduce their size by 8.6KiB (20% reduction).

Minifying http://www.las.ac.cn/css_discovery/css.css could save 3.6KiB (17% reduction).
Minifying http://www.las.ac.cn/css_discovery/summon-autocomplete.css could save 2.1KiB (26% reduction).
Minifying http://www.las.ac.cn/css_discovery/menu.css could save 1.3KiB (44% reduction).
Minifying http://www.las.ac.cn/css_discovery/search.css could save 1.1KiB (22% reduction).
Minifying http://www.las.ac.cn/css_discovery/public.css could save 543B (12% reduction).

1 Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.


Minify HTML for the following resources to reduce their size by 3.1KiB (15% reduction).

Minifying http://www.las.ac.cn/ could save 3.1KiB (15% reduction) after compression.

Las.ac.cn Desktop Resources

Total Resources63
Number of Hosts4
Static Resources58
JavaScript Resources17
CSS Resources7

Las.ac.cn Desktop Resource Distribution

las.ac.cn mobile page speed rank

Site Title: 中国科学院文献情报中心


Las.ac.cn Mobile Speed: 40/100

Las.ac.cn Mobile Speed Test Quick Summary:

72 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 5 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.


None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.


Remove render-blocking JavaScript:

http://mobile.las.ac.cn/static/jquery-1.10.2.min.js
http://mobile.las.ac.cn/static/jquery.mobile-1.4.0.min.js
http://mobile.las.ac.cn/static/lasmobile.js
http://mobile.las.ac.cn/static/footer.js?tmp=12617
http://hm.baidu.com/h.js?3fc03b8451e3607f2be29510d6c1d160

Optimize CSS Delivery of the following:

http://mobile.las.ac.cn/static/jquery.mobile-1.4.0.min.css
http://mobile.las.ac.cn/static/lasmobile.css
http://mobile.las.ac.cn/static/mine1.min.css

45 Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.


Enable compression for the following resources to reduce their transfer size by 431.3KiB (78% reduction).

Compressing http://mobile.las.ac.cn/static/jquery.mobile-1.4.0.min.css could save 206.3KiB (88% reduction).
Compressing http://mobile.las.ac.cn/static/jquery.mobile-1.4.0.min.js could save 136.1KiB (72% reduction).
Compressing http://mobile.las.ac.cn/static/jquery-1.10.2.min.js could save 58.9KiB (64% reduction).
Compressing http://mobile.las.ac.cn/static/mine1.min.css could save 18.8KiB (85% reduction).
Compressing http://mobile.las.ac.cn/home.xhtml could save 6.1KiB (69% reduction).
Compressing http://mobile.las.ac.cn/static/lasmobile.css could save 2.6KiB (71% reduction).
Compressing http://mobile.las.ac.cn/static/footer.js?tmp=12617 could save 1.5KiB (62% reduction).
Compressing http://mobile.las.ac.cn/static/lasmobile.js could save 1KiB (63% reduction).

26 Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.


Avoid landing page redirects for the following chain of redirected URLs.

http://las.ac.cn/
http://www.las.ac.cn/
http://mobile.las.ac.cn/home.xhtml

15 Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.


Leverage browser caching for the following cacheable resources:

http://mobile.las.ac.cn/static/images/ajax-loader.gif (expiration not specified)
http://mobile.las.ac.cn/static/images/logo.png (expiration not specified)
http://mobile.las.ac.cn/static/images/tb1.png (expiration not specified)
http://mobile.las.ac.cn/static/images/tb10.png (expiration not specified)
http://mobile.las.ac.cn/static/images/tb11.png (expiration not specified)
http://mobile.las.ac.cn/static/images/tb13.png (expiration not specified)
http://mobile.las.ac.cn/static/images/tb15.png (expiration not specified)
http://mobile.las.ac.cn/static/images/tb16.png (expiration not specified)
http://mobile.las.ac.cn/static/images/tb2.png (expiration not specified)
http://mobile.las.ac.cn/static/images/tb4.png (expiration not specified)
http://mobile.las.ac.cn/static/images/tb5.png (expiration not specified)
http://mobile.las.ac.cn/static/images/tb7.png (expiration not specified)
http://mobile.las.ac.cn/static/images/tb8.png (expiration not specified)
http://mobile.las.ac.cn/static/images/tb9.png (expiration not specified)
http://mobile.las.ac.cn/static/jquery-1.10.2.min.js (expiration not specified)
http://mobile.las.ac.cn/static/jquery.mobile-1.4.0.min.css (expiration not specified)
http://mobile.las.ac.cn/static/jquery.mobile-1.4.0.min.js (expiration not specified)
http://mobile.las.ac.cn/static/lasmobile.css (expiration not specified)
http://mobile.las.ac.cn/static/lasmobile.js (expiration not specified)
http://mobile.las.ac.cn/static/mine1.min.css (expiration not specified)

8 Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.


The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

Only about 68% of the final above-the-fold content could be rendered with the full HTML response.

1 Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.


Minify CSS for the following resources to reduce their size by 3.9KiB (16% reduction).

Minifying http://mobile.las.ac.cn/static/mine1.min.css could save 2.9KiB (14% reduction).
Minifying http://mobile.las.ac.cn/static/lasmobile.css could save 1KiB (28% reduction).

1 Optimize images

Properly formatting and compressing images can save many bytes of data.


Optimize the following images to reduce their size by 2.2KiB (40% reduction).

Compressing http://mobile.las.ac.cn/static/images/logo.png could save 2.2KiB (40% reduction).

1 Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.


Minify HTML for the following resources to reduce their size by 2.2KiB (25% reduction).

Minifying http://mobile.las.ac.cn/home.xhtml could save 2.2KiB (25% reduction).

1 Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.


Minify JavaScript for the following resources to reduce their size by 973B (40% reduction).

Minifying http://mobile.las.ac.cn/static/footer.js?tmp=12617 could save 973B (40% reduction).

Las.ac.cn Mobile Resources

Total Resources29
Number of Hosts5
Static Resources21
JavaScript Resources5
CSS Resources3

Las.ac.cn Mobile Resource Distribution

las.ac.cn mobile page usability

Site Title: 中国科学院文献情报中心


Las.ac.cn Mobile Usability: 100/100

Las.ac.cn Mobile Resources

Total Resources29
Number of Hosts5
Static Resources21
JavaScript Resources5
CSS Resources3

Las.ac.cn Mobile Resource Distribution

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