Tools & Wizards About Us
damsan.net screenshot

Report Summary

  • 59

    Performance

    Renders faster than
    74% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

damsan.net

Đam San.net -Diễn đàn yêu âm nhạc và nhạc cụ dân tộc Việt Nam

Page Load Speed

6.3 sec in total

First Response

2.3 sec

Resources Loaded

3.4 sec

Page Rendered

561 ms

damsan.net screenshot

About Website

Welcome to damsan.net homepage info - get ready to check Dam San best content for Vietnam right away, or after learning these important things about damsan.net

Webmasters, WordPress, Graphic Design Forum.

Visit damsan.net

Key Findings

We analyzed Damsan.net page load time and found that the first response time was 2.3 sec and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

damsan.net performance score

59

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

57/100

10%

LCP (Largest Contentful Paint)

Value5.6 s

18/100

25%

SI (Speed Index)

Value5.9 s

47/100

10%

TBT (Total Blocking Time)

Value290 ms

80/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value6.8 s

55/100

10%

Network Requests Diagram

damsan.net

2317 ms

jquery.min.js

29 ms

jquery.min.js

47 ms

bootstrap.min.js

109 ms

css

62 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 88% of them (59 requests) were addressed to the original Damsan.net, 3% (2 requests) were made to Ajax.googleapis.com and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Damsan.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 174.5 kB (30%)

Content Size

590.4 kB

After Optimization

415.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Damsan.net main page is 590.4 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. 40% of websites need less resources to load. Images take 283.3 kB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 116.9 kB

  • Original 130.0 kB
  • After minification 102.5 kB
  • After compression 13.1 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 27.5 kB, which is 21% 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 116.9 kB or 90% of the original size.

Image Optimization

-19%

Potential reduce by 52.7 kB

  • Original 283.3 kB
  • After minification 230.5 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. Obviously, Dam San needs image optimization as it can save up to 52.7 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 1.0 kB

  • Original 138.1 kB
  • After minification 138.1 kB
  • After compression 137.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-10%

Potential reduce by 3.8 kB

  • Original 38.9 kB
  • After minification 38.8 kB
  • After compression 35.2 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. Damsan.net has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 13 (20%)

Requests Now

64

After Optimization

51

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dam San. 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 from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

damsan.net

damsan.net

2317 ms

jquery.min.js

jquery.min.js

29 ms

jquery.min.js

jquery.min.js

47 ms

bootstrap.min.js

bootstrap.min.js

109 ms

css

css

62 ms

font-awesome.css

font-awesome.css

138 ms

bootstrap.min.css

bootstrap.min.css

186 ms

jquery.js

jquery.js

200 ms

jquery.plugins.min.js

jquery.plugins.min.js

143 ms

general.js

general.js

114 ms

theme.js

theme.js

132 ms

global.css

global.css

218 ms

css.php

css.php

308 ms

avatarep.css

avatarep.css

184 ms

avatar_6203.jpg

avatar_6203.jpg

223 ms

avatar_5888.jpg

avatar_5888.jpg

303 ms

avatar_82.jpg

avatar_82.jpg

304 ms

avatar_5877.jpg

avatar_5877.jpg

304 ms

default_avatar.png

default_avatar.png

305 ms

analytics.js

analytics.js

35 ms

avatar_975.jpg

avatar_975.jpg

244 ms

collapse.png

collapse.png

247 ms

thongbao.jpg

thongbao.jpg

247 ms

noiqui.png

noiqui.png

247 ms

ykienthanhvien.jpg

ykienthanhvien.jpg

247 ms

huongdansudung.png

huongdansudung.png

247 ms

tintucsukien.png

tintucsukien.png

253 ms

nghesibieudien.png

nghesibieudien.png

260 ms

thacmacnhacly.png

thacmacnhacly.png

271 ms

lythuyetnhac.png

lythuyetnhac.png

270 ms

yeucaubannhac.jpg

yeucaubannhac.jpg

271 ms

thutubannhac.jpg

thutubannhac.jpg

376 ms

nhacnen.jpg

nhacnen.jpg

378 ms

thanhvienbieudien.jpg

thanhvienbieudien.jpg

378 ms

bosuutapthanhvien.jpg

bosuutapthanhvien.jpg

377 ms

sao.jpg

sao.jpg

379 ms

tieu.jpg

tieu.jpg

379 ms

ocarina.jpg

ocarina.jpg

379 ms

dantranh.jpg

dantranh.jpg

379 ms

dannhi.jpg

dannhi.jpg

380 ms

dannguyet.jpg

dannguyet.jpg

381 ms

collect

collect

22 ms

dantyba.jpg

dantyba.jpg

336 ms

avatar_13064.jpg

avatar_13064.jpg

336 ms

js

js

95 ms

danbau.jpg

danbau.jpg

319 ms

nhaccukhac.png

nhaccukhac.png

344 ms

muaban.png

muaban.png

339 ms

damsan.gif

damsan.gif

142 ms

chetaosuachua.png

chetaosuachua.png

285 ms

offlinegiaoluu.jpg

offlinegiaoluu.jpg

285 ms

mienbac.jpg

mienbac.jpg

261 ms

mientrung.jpg

mientrung.jpg

260 ms

miennam.jpg

miennam.jpg

195 ms

avatar_8.jpg

avatar_8.jpg

204 ms

avatar_625.jpg

avatar_625.jpg

207 ms

avatar_9.jpg

avatar_9.jpg

206 ms

avatar_5900.jpg

avatar_5900.jpg

215 ms

avatar_7381.jpg

avatar_7381.jpg

218 ms

task.php

task.php

837 ms

font

font

126 ms

nav-bg-dark.png

nav-bg-dark.png

223 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

271 ms

bodybg.png

bodybg.png

117 ms

forum_icon_sprite.png

forum_icon_sprite.png

127 ms

mini_status_sprite.png

mini_status_sprite.png

132 ms

forum_icon_sprite_small.png

forum_icon_sprite_small.png

161 ms

Accessibility Review

damsan.net accessibility score

71

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA IDs are not unique

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

High

Image elements do not have [alt] attributes

Best Practices

damsan.net best practices score

50

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

damsan.net SEO score

54

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    VI

  • Language Claimed

    VI

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Damsan.net can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and it matches the claimed language. Our system also found out that Damsan.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

damsan.net

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