Tools & Wizards About Us
vietcert.org screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

vietcert.org

Trung tâm giám định và chứng nhận hợp chuẩn hợp quy VietCert

Page Load Speed

7.2 sec in total

First Response

889 ms

Resources Loaded

6 sec

Page Rendered

311 ms

vietcert.org screenshot

About Website

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

Tổ chức đánh giá sự phù hợp VietCert cung cấp dịch vụ chứng nhận sản phẩm hàng hóa phù hợp quy chuẩn, tiêu chuẩn Việt Nam (TCVN), giám định, thử nghiệm, hiệu chuẩn, kiểm tra nhà nước hàng nhập khẩu, đ...

Visit vietcert.org

Key Findings

We analyzed Vietcert.org page load time and found that the first response time was 889 ms and then it took 6.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

vietcert.org performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value8.7 s

1/100

25%

SI (Speed Index)

Value22.9 s

0/100

10%

TBT (Total Blocking Time)

Value3,740 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.033

100/100

15%

TTI (Time to Interactive)

Value31.5 s

0/100

10%

Network Requests Diagram

vietcert.org

889 ms

vietcert.org

1096 ms

top.min.css

511 ms

style.css

752 ms

top.min.js

1300 ms

Our browser made a total of 63 requests to load all elements on the main page. We found that 52% of them (33 requests) were addressed to the original Vietcert.org, 40% (25 requests) were made to Cdn.vietcert.org and 3% (2 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (2.4 sec) relates to the external source Cdn.vietcert.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 150.4 kB (4%)

Content Size

4.1 MB

After Optimization

3.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vietcert.org main page is 4.1 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. 55% of websites need less resources to load. Images take 3.6 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 76.8 kB

  • Original 88.0 kB
  • After minification 62.3 kB
  • After compression 11.2 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 25.7 kB, which is 29% 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 76.8 kB or 87% of the original size.

Image Optimization

-0%

Potential reduce by 1.2 kB

  • Original 3.6 MB
  • After minification 3.6 MB

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. Viet Cert images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 17 B

  • Original 74.0 kB
  • After minification 74.0 kB
  • After compression 74.0 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

-25%

Potential reduce by 72.4 kB

  • Original 287.5 kB
  • After minification 287.5 kB
  • After compression 215.1 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. Vietcert.org needs all CSS files to be minified and compressed as it can save up to 72.4 kB or 25% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (29%)

Requests Now

52

After Optimization

37

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Viet Cert. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

vietcert.org

vietcert.org

889 ms

vietcert.org

vietcert.org

1096 ms

top.min.css

top.min.css

511 ms

style.css

style.css

752 ms

top.min.js

top.min.js

1300 ms

library.js

library.js

949 ms

app.js

app.js

1549 ms

vi.js

vi.js

530 ms

js

js

54 ms

style.min.css

style.min.css

679 ms

global.min.js

global.min.js

1030 ms

logo_1569896847146.png

logo_1569896847146.png

911 ms

chung_nhan_haccp_1604024696085.jpg

chung_nhan_haccp_1604024696085.jpg

1833 ms

chung_nhan_hang_hoa_nhap_khau_1604024658381.jpg

chung_nhan_hang_hoa_nhap_khau_1604024658381.jpg

1868 ms

chung_nhan_haccp_1604024609292.jpg

chung_nhan_haccp_1604024609292.jpg

1966 ms

chung_nhan_hop_quy_phan_bon_1604024589049.jpg

chung_nhan_hop_quy_phan_bon_1604024589049.jpg

2150 ms

trung_tam_giam_dinh_va_chung_nhan_hop_chuan_hop_quy_dao_tao_chuyen_gia_1571675102300.jpg

trung_tam_giam_dinh_va_chung_nhan_hop_chuan_hop_quy_dao_tao_chuyen_gia_1571675102300.jpg

1358 ms

favicon_96x96_1572573954375.png

favicon_96x96_1572573954375.png

1074 ms

chung_nhan_1571365612898.png

chung_nhan_1571365612898.png

1231 ms

vanphong_1567825536932.png

vanphong_1567825536932.png

1554 ms

vietcert_chung_nhan_he_thong_quan_ly_1_1567829031186.jpg

vietcert_chung_nhan_he_thong_quan_ly_1_1567829031186.jpg

1696 ms

vietcert_trung_tam_giam_dinh_1_1567828776224.jpg

vietcert_trung_tam_giam_dinh_1_1567828776224.jpg

1770 ms

vietcert_dao_tao_chuyen_gia_danh_gia_1_1567829129539.jpg

vietcert_dao_tao_chuyen_gia_danh_gia_1_1567829129539.jpg

2043 ms

khach_quan_1567929968192.jpg

khach_quan_1567929968192.jpg

1961 ms

background_sk_03_final_01_1573236729870.jpg

background_sk_03_final_01_1573236729870.jpg

2033 ms

kiem_tra_hang_hoa_nhap_khau_do_choi_tre_em_vietcert_1572330705530.jpg

kiem_tra_hang_hoa_nhap_khau_do_choi_tre_em_vietcert_1572330705530.jpg

2048 ms

giam_dinh_thuong_mai_vietcert_1572312997530.jpg

giam_dinh_thuong_mai_vietcert_1572312997530.jpg

2190 ms

giam_dinh_tinh_dong_bo_may_thiet_bi_vietcert_1572314145147.jpg

giam_dinh_tinh_dong_bo_may_thiet_bi_vietcert_1572314145147.jpg

2142 ms

san_xuat_va_thuong_mai_to_ba_1569902277950.png

san_xuat_va_thuong_mai_to_ba_1569902277950.png

2191 ms

cong_ty_tnhh_baconco_1569902109789.png

cong_ty_tnhh_baconco_1569902109789.png

2215 ms

cong_ty_co_phan_tan_ky_nguyen_1569902085460.png

cong_ty_co_phan_tan_ky_nguyen_1569902085460.png

2211 ms

cong_ty_co_phan_nuoc_giai_khat_yen_sao_khanh_hoa_1569902052646.png

cong_ty_co_phan_nuoc_giai_khat_yen_sao_khanh_hoa_1569902052646.png

2309 ms

cong_ty_co_phan_tap_doan_que_lam_1569902025897.png

cong_ty_co_phan_tap_doan_que_lam_1569902025897.png

2315 ms

cong_ty_co_phan_cong_nong_nghiep_tien_nong_1569901990153.png

cong_ty_co_phan_cong_nong_nghiep_tien_nong_1569901990153.png

2356 ms

cong_ty_dich_vu_co_phan_cap_treo_ba_na_1569901968043.png

cong_ty_dich_vu_co_phan_cap_treo_ba_na_1569901968043.png

2351 ms

cong_ty_tnhh_cong_nghiep_tung_shin_1569901944882.png

cong_ty_tnhh_cong_nghiep_tung_shin_1569901944882.png

2374 ms

icon-hotline.png

icon-hotline.png

177 ms

line.png

line.png

161 ms

Roboto-Regular.ttf

Roboto-Regular.ttf

192 ms

element-icons.woff

element-icons.woff

167 ms

element-icons.woff

element-icons.woff

213 ms

ajax

ajax

357 ms

P5AC7PMpqfU

P5AC7PMpqfU

8 ms

vwusBhd2NSw

vwusBhd2NSw

7 ms

next-horizontal.png

next-horizontal.png

202 ms

prev-horizontal.png

prev-horizontal.png

281 ms

xfbml.customerchat.js

xfbml.customerchat.js

36 ms

entypo.woff

entypo.woff

271 ms

element-icons.ttf

element-icons.ttf

175 ms

top.min.css

top.min.css

343 ms

style.css

style.css

285 ms

top.min.js

top.min.js

228 ms

library.js

library.js

389 ms

app.js

app.js

496 ms

vi.js

vi.js

191 ms

js

js

62 ms

pinterest.svg

pinterest.svg

165 ms

twitter.svg

twitter.svg

161 ms

google-plus.svg

google-plus.svg

169 ms

youtube.svg

youtube.svg

168 ms

facebook.svg

facebook.svg

172 ms

element-icons.woff

element-icons.woff

167 ms

element-icons.ttf

element-icons.ttf

166 ms

Accessibility Review

vietcert.org accessibility score

81

Accessibility Issues

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

button, link, and menuitem elements do not have accessible names.

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

Buttons do not have an accessible name

High

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

High

Links do not have a discernible name

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.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

vietcert.org best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

vietcert.org SEO score

91

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

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Vietcert.org 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 Vietcert.org 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

vietcert.org

Open Graph data is detected on the main page of Viet Cert. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: