Analyze Diễn đàn CLB Thiên Văn Học Nghiệp Dư TP.HCM | Diễn đàn HAAC

Diễn đàn HAAC – thảo luận kiến thức thiên văn bao gồm: Bão từ * Cực quang * Big bang * Sự sống ngoài trái đất * Góc sáng tạo * Tên lửa nước * Thiên hà

Page load speed analysis

  • 12/100

    Poor result
  • 4

    Successful tests
  • 4

    Failed tests
  • First response

    487 ms

  • Resources loaded

    10.9 sec

  • Page rendered

    656 ms

  • Total page load time

    12 sec

Click here to check amazing Thienvanhoc content for Vietnam. Otherwise, check out these important facts you probably never knew about

We analyzed page load time and found that the first response time was 487 ms and then it took 11.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster. This domain responded with an error, which can significantly jeopardize rating and web reputation

Page optimization

  • HTML 302.3 kB
    Images 185.6 kB
    Javascripts 108.5 kB
    CSS 1.7 kB

    In fact, the total size of main page is 598.1 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. 35% of websites need less resources to load. HTML takes 302.3 kB which makes up the majority of the site volume.

    • Original 302.3 kB
    • After minification 244.3 kB
    • After compression 33.7 kB

    HTML optimization

    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 58.0 kB, which is 19% 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 268.6 kB or 89% of the original size.

    • Original 185.6 kB
    • After optimization 168.9 kB

    Image optimization

    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. Thienvanhoc images are well optimized though.

    • Original 108.5 kB
    • After minification 104.2 kB
    • After compression 38.7 kB

    JavaScript optimization

    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 69.8 kB or 64% of the original size.

    • Original 1.7 kB
    • After minification 416 B
    • After compression 232 B

    CSS optimization

    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. needs all CSS files to be minified and compressed as it can save up to 1.5 kB or 86% of the original size.

Network requests diagram

  • forum
  • vbulletin_important.css
  • yahoo-dom-event.js
  • connection-min.js
  • vbulletin_global.js
  • ncode_imageresizer.js
  • vbulletin_md5.js
  • brand
  • brand
  • vbulletin_read_marker.js
  • b
  • tv-mudim.js
  • Untitled-1_zps6f583202.jpg
  • top_1.gif
  • online
  • noi_quy.jpg
  • lienket.gif
  • has.jpg
  • logoToanTinOrg.png
  • navbits_start.gif
  • collapse_tcat.gif
  • sm%20(47).gif
  • sm%20(43).gif
  • sm%20(64).gif
  • sm%20(27).gif
  • sm%20(24).gif
  • sm%20(59).gif
  • sm%20(44).gif
  • sm%20(31).gif
  • sm%20(9).gif
  • sm%20(6).gif
  • sm%20(75).gif
  • sm%20(58).gif
  • sm.gif
  • sm%20(60).gif
  • sm%20(3).gif
  • sm%20(17).gif
  • sm%20(5).gif
  • sm%20(57).gif
  • sm%20(19).gif
  • sm%20(11).gif
  • sm%20(42).gif
  • sm%20(54).gif
  • sm%20(70).gif
  • sm%20(22).gif
  • sm%20(46).gif
  • sm%20(48).gif
  • sm%20(82).gif
  • sm%20(23).gif
  • sm%20(25).gif
  • sm%20(26).gif
  • sm%20(21).gif
  • sm%20(55).gif
  • sm%20(12).gif
  • top_left.gif
  • top_right.gif
  • top_2.gif
  • left.gif
  • center.gif
  • right.gif
  • bot.gif
  • post_old.gif
  • cron.php
  • thongbao.jpg
  • vietnam.png
  • hoatdong.jpg
  • iya2009.jpg
  • wsw.jpg
  • news.gif
  • thienvanpt.jpg
  • thienvanvatly.jpg
  • hemattroi.jpg
  • congnghevt.jpg
  • quansat.jpg
  • ktv.jpg
  • anhtvnd.jpg
  • ytuong.jpg
  • hoctap.jpg
  • congnghett.jpg
  • sangtao.jpg
  • sm%20(74).gif
  • google_custom_search_watermark.gif
  • vbshout.php
  • s.gif
  • ga.js
  • __utm.gif
  • sm%20(68).gif
  • noi_quy.jpg
  • thongbao.jpg
  • sm%20(7).gif
  • hoatdong.jpg
  • sm%20(77).gif
  • vietnam.png
  • sm%20(39).gif
  • sm%20(16).gif
  • iya2009.jpg
  • wsw.jpg
  • sm%20(50).gif
  • news.gif
  • sm%20(14).gif
  • sm%20(69).gif
  • thienvanpt.jpg
  • sm%20(4).gif
  • sm%20(71).gif
  • thienvanvatly.jpg
  • sm%20(76).gif
  • hemattroi.jpg
  • sm%20(30).gif
  • congnghevt.jpg
  • quansat.jpg
  • ktv.jpg
  • sm%20(34).gif
  • sm%20(84).gif
  • sm%20(61).gif
  • subforum_old.gif
  • anhtvnd.jpg
  • ytuong.jpg
  • hoctap.jpg
  • icon4.gif
  • congnghett.jpg
  • lastpost.gif
  • sangtao.jpg
  • icon1.gif
  • forum_old_lock.gif
  • poll_posticon.gif
  • icon7.gif
  • icon5.gif
  • icon12.gif
  • icon10.gif
  • collapse_thead.gif
  • whos_online.gif
  • stats.gif
  • birthday.gif
  • thienvanhoc.gif
  • forum_new.gif
  • forum_old.gif
  • gradient_tcat.gif
  • gradient_thead.gif
  • sm%20(18).gif
  • sm%20(83).gif
  • sm%20(2).gif
  • sm%20(49).gif

Our browser made a total of 143 requests to load all elements on the main page. We found that 78% of them (111 requests) were addressed to the original, 13% (18 requests) were made to and 1% (2 requests) were made to The less responsive or slowest element that took the longest time to load (3.1 sec) belongs to the original domain

Additional info on


The browser has sent 120 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Thienvanhoc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.











Possible request optimization













Poor result


As for redirects, our browser was forwarded to before it reached this domain.

IP address

This IP address is dedicated to This is the best domain hosting practice .

Normal result

IP Trace

DNS records

Type Host Target/ip TTL Other
A 3600
NS 3600
NS 3600

3600 Mname:
Serial: 2018010803
Refresh: 7200
Retry: 1800
Expire: 1209600
Minimum-ttl: 3600

Language and encoding

Normal result


VI vi language flag


EN en language flag





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

HTTPS certificate

SSL Certificate has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Normal result

Visitor World Map

Country of origin for 100% of all visits is Vietnam. It’s good for that their server is also located in Vietnam, as that enables the majority of their visitors to benefit from a much faster page load time.

Good result

Poor result

Social Sharing Optimization

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

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