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SEO Score63/100
Average SEO score of top 100 sites: 75%
Your site scored 63/100, below the 75 average for top sites. We found 20 issues to fix, and clearing them is how you move up.
20 Failed
5 Warnings
33 Passed
Want to fix these issues and track your progress?
Issues to fix
HIGH
To provide a good user experience, Google recommends that sites should aim for a Largest Contentful Paint duration of 2.5 seconds or less.
DetailsHIGH
H1 and H2 tags ensure better search engine visibility and ranking by providing structure and hierarchy to the content, improving readability, and providing opportunities for keyword optimization.
DetailsHIGH
To ensure that Search Engines can accurately identify the topic of this webpage, it is important to include the most common keywords in the title tag, meta description, and heading tags.
DetailsHIGH
To improve the website experience for your visitors, it is recommended to eliminate any render-blocking resources on this webpage.
DetailsHIGH
Using images in a modern format can significantly reduce the file size and improve the loading speed of a webpage, providing a better user experience and potentially increasing engagement.
DetailsHIGH
Users may abandon pages that take longer than 5 seconds to load, resulting in a potential loss of up to 50% of visitors. Faster loading pages can lead to increased traffic, better conversions, and higher sales.
DetailsHIGH
By creating a custom 404 error page with helpful links and information, users are more likely to stay on the site and continue to explore.
DetailsMEDIUM
To provide a good user experience, Google recommends that sites should aim for a Time To First Byte value of 0.8 seconds or less.
DetailsMEDIUM
To provide a good user experience, Google recommends that sites should aim for a First Contentful Paint value of 1.8 seconds or less.
DetailsMEDIUM
JavaScript errors can impact user experience and may prevent users from viewing the page properly.
DetailsMEDIUM
Serve properly sized images to reduce page loading times and to improve user's experience.
DetailsMEDIUM
Avoid performance and security issues by adding "rel=noopener" or "rel=noreferrer" to your "target=_blank" links.
DetailsLOW
While a canonical link tag can help in resolving duplicate content issues, it's important to verify that the specified URL is accurate, especially if the site's URL structure has been recently updated.
DetailsLOW
To protect against spam harvesters, consider hiding or obfuscating email addresses in your page code.
DetailsLOW
Using more than 20 HTTP requests on a webpage can negatively impact the loading time.
DetailsLOW
Strip out any unnecessary metadata to improve loading time, security, and privacy. Metadata should not exceed 16% of the image size.
DetailsLOW
Consider adding the Strict-Transport-Security header to your webpage to ensure that web traffic is encrypted over HTTPS, mitigating the risk of man-in-the-middle attacks and other security threats.
DetailsLOW
Replace deprecated HTML tags with their modern equivalents or appropriate CSS rules.
DetailsCommon SEO issues
Score:55
Failed:5
Warnings:3
Passed:11
Meta Title Test
100% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using a title tag.
Meta Description Test
96% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using a meta description tag with a length of 367 characters. We recommend using well-written and inviting meta descriptions with a length between 150 and 220 characters (spaces included).
Desktop version
https://viettelnet.vn/author/nguyen-dinh-cuong/
Mobile version
https://viettelnet.vn/author/nguyen-dinh-cuong/
There is likely no optimal keyword density (search engine algorithms have evolved beyond keyword density metrics as a significant ranking factor). It can be useful, however, to note which keywords appear most often on your page and if they reflect the intended topic of your page. More importantly, the keywords on your page should appear within natural sounding and grammatically correct copy.
Keywords Usage Test
45% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The most common keywords of this webpage are not distributed across the important HTML tags! Primary keywords should appear in title tag, meta description and heading tags to help Search Engines to properly identify the topic of this webpage.
binh
bình
băng
camera
chuyên
chính
chạy
chống
cloud
cung
công
cường
diện
doanh
download
dương
dịch
dụng
dừng
epass
giúp
giải
giới
hoặc
https
huyện
hàng
hành
hãng
hướng
hỏng
internet
khách
khóa
không
kinh
kiếm
liên
lịch
minh
miễn
mong
motor
muốn
mạng
nghiệm
nghiệp
nghị
nguyễn
nhân
nẵng
pháp
phát
phân
phòng
phường
phần
phẩm
phối
quang
quyền
quân
quận
quốc
server
smart
sách
thanh
thay
theo
thiết
thuê
thành
thông
toàn
trang
trong
trung
trình
trộm
tặng
tỉnh
viettel
viettelnet
viên
viễn
việt
xuân
zalo
đang
điểm
điện
đoàn
đình
đăng
đường
được
định
đồng
động
See which keywords rank your URL in Google’s top 20
Get key keyword metrics like average position, search volume, CPC, and more.
Understand your competitors' SEO and backlink profile
Get related competitors and their domain authority score in relation to your domain.
Robots.txt Test
99% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This website is using a robots.txt file.
Sitemap Test
74% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This website has a sitemap file.
Image Alt Test
71% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using "img" tags with empty or missing "alt" attribute!
Responsive Image Test
28% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
Not all images in this webpage are properly sized! This webpage is serving images that are larger than needed for the size of the user's viewport.
Image Aspect Ratio Test
75% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
All image display dimensions match the natural aspect ratio.
Google Analytics Test
65% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using Google Analytics.
Favicon Test
100% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This website appears to have a favicon.
Get a full and detailed list of your backlinks
See every website linking to yours, along with detailed backlink data.
JS Error Test
79% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
We've found JavaScript errors on this webpage!
Console Errors Test
41% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage has some warnings caught by the Chrome DevTools Console!
Charset Declaration Test
100% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage has a character encoding declaration.
Content-Type: text/html; charset=UTF-8
Speed optimizations
Score:60
Failed:8
Warnings:2
Passed:10
HTML Page Size Test
21% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The size of this webpage's HTML is 27.21 Kb and is under the average webpage's HTML size of 33 Kb. Faster loading websites result in a better user experience, higher conversion rates, and generally better search engine rankings.
DOM Size Test
54% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The Document Object Model (DOM) of this webpage has 1,213 nodes which is less than the recommended value of 1,500 nodes.
HTML Compression/GZIP Test
97% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is successfully compressed using br compression on your code. The HTML code is compressed from 153.14 Kb to 27.21 Kb (82% size savings). This helps ensure a faster loading webpage and improved user experience.
Site Loading Speed Test
66% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The loading time of this webpage (measured from N. Virginia, US) is around 20.49 seconds and is greater than the average loading speed which is 5 seconds!
Accurate historical loading speed monitor and reports
Get detailed and accurate loading speed reports for your websites and see how your pages are being loaded over time.
JS Execution Time Test
71% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The JavaScript code used by this webpage is executed in more than 2 seconds!
Page Objects Test
2% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using more than 20 http requests, which can slow down page loading and negatively impact user experience!
Content size by content type
Content type
Percent
Size
image
47.3 %
1.37 Mb
javascript
44.4 %
1.28 Mb
font
3.5 %
104.18 Kb
css
3.4 %
100.49 Kb
html
0.8 %
23.13 Kb
other
0.5 %
15.36 Kb
TOTAL
100%
2.88 Mb
Requests by content type
Content type
Percent
Requests
javascript
28.6 %
22
image
28.6 %
22
other
22.1 %
17
css
15.6 %
12
font
3.9 %
3
html
1.3 %
1
TOTAL
100%
77
Content size by domain
Domain
Percent
Size
viettelnet.vn
54.4 %
1.57 Mb
googletagmanager.com
26.5 %
782.14 Kb
gstatic.com
7.0 %
207.32 Kb
pagead2.googlesyndication.com
6.9 %
202.70 Kb
use.fontawesome.com
3.5 %
104.18 Kb
google-analytics.com
0.7 %
21.09 Kb
secure.gravatar.com
0.4 %
11.07 Kb
cdn.gtranslate.net
0.3 %
9.18 Kb
tpc.googlesyndication.com
0.2 %
6.67 Kb
google.com
0.1 %
2.05 Kb
Other
0.1 %
1.93 Kb
TOTAL
100%
2.88 Mb
Requests by domain
Domain
Percent
Requests
viettelnet.vn
37.7 %
29
googletagmanager.com
11.7 %
9
cdn.gtranslate.net
10.4 %
8
google-analytics.com
7.8 %
6
stats.g.doubleclick.net
7.8 %
6
google.com
6.5 %
5
pagead2.googlesyndication.com
3.9 %
3
use.fontawesome.com
3.9 %
3
analytics.google.com
3.9 %
3
fonts.googleapis.com
1.3 %
1
Other
5.2 %
4
TOTAL
100%
77
CDN Usage Test
97% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is serving all images, javascript and css resources from CDNs.
Modern Image Format Test
38% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
Image Metadata Test
72% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using images with large metadata (more than 16% of the image size)! Stripping out unnecessary metadata tags can improve not only the loading time but also the security and privacy of a webpage.
Image Caching Test
97% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This website is using cache headers for images and the browsers will display these images from the cache.
JavaScript Caching Test
95% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using cache headers for all JavaScript resources.
CSS Caching Test
96% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using cache headers for all CSS resources.
JavaScript Minification Test
96% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
All JavaScript files used by this webpage are minified.
CSS Minification Test
100% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
All CSS resources used by this webpage are minified.
Render Blocking Resources Test
10% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using render blocking resources! Eliminating render-blocking resources can help this webpage to load significantly faster and will improve the website experience for your visitors.
URL Redirects Test
98% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This URL performed 1 redirects! While redirects are typically not advisable (as they can affect search engine indexing issues and adversely affect site loading time), one redirect may be acceptable, particularly if the URL is redirecting from a non-www version to its www version, or vice-versa.
Time To First Byte Test
98% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The Time To First Byte value of this webpage is 2.593 seconds. To provide a good user experience, Google recommends that sites should strive to have a TTFB of 0.8 seconds or less.
2.593 s
0.8 s
1.8 s
First Contentful Paint Test
94% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The First Contentful Paint value of this webpage is 13.878 seconds. To provide a good user experience, Google recommends that sites should strive to have a First Contentful Paint value of 1.8 seconds or less.
13.878 s
1.8 s
3 s
Largest Contentful Paint Test
90% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The Largest Contentful Paint duration of this webpage is 13.88 seconds. To provide a good user experience, Google recommends that sites should strive to have Largest Contentful Paint of 2.5 seconds or less.
13.88 s
2.5 s
4 s
Largest Contentful Paint element within the viewport:
<img fetchpriority="high" src="https://viettelnet.vn/wp-content/uploads/2024/04/b...">
Cumulative Layout Shift Test
94% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The CLS score of this webpage is 0.0026. To provide a good user experience, Google recommends that sites should strive to have a CLS score of 0.1 or less.
0.0026
0.1
0.25
DOM element which contributes the most to CLS score:
Html: <a class="dmca-badge" title="Content Protection by DMCA.com" href="https://www.dmca.com/Protection/Status.aspx?ID=48a..." rel="nofollow noopener">
Score: 0.0025
Server and security
Score:82
Failed:3
Warnings:0
Passed:4
URL Canonicalization Test
97% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
https://viettelnet.vn/author/nguyen-dinh-cuong/ and https://www.viettelnet.vn/author/nguyen-dinh-cuong/ resolve to the same URL.
SSL Checker and HTTPS Test
100% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This website is successfully using HTTPS, a secure communication protocol over the Internet.
The certificate is not used before the activation date.
The certificate has not expired.
The hostname "viettelnet.vn" is correctly listed in the certificate.
The certificate should be trusted by all major web browsers.
The certificate was not revoked.
The certificate was signed with a secure hash.
Certificate Chain:
Server certificate
Common Name
viettelnet.vn
Subject Alternative Names
viettelnet.vn, *.viettelnet.vn
Not Valid Before
Fri, March 29, 2024 at 5:43:29 AM UTC
Not Valid After
Thu, June 27, 2024 at 5:43:28 AM UTC
Signature Algorithm
sha256WithRsaEncryption
Issuer
GTS CA 1P5
Intermediate certificate
Common Name
GTS CA 1P5
Organization
Google Trust Services LLC
Location
US
Not Valid Before
Thu, August 13, 2020 at 12:00:42 AM UTC
Not Valid After
Thu, September 30, 2027 at 12:00:42 AM UTC
Signature Algorithm
sha256WithRsaEncryption
Issuer
GTS Root R1
Root certificate
Common Name
GTS Root R1
Organization
Google Trust Services LLC
Location
US
Not Valid Before
Wed, June 22, 2016 at 12:00:00 AM UTC
Not Valid After
Sun, June 22, 2036 at 12:00:00 AM UTC
Signature Algorithm
sha384WithRsaEncryption
Issuer
GTS Root R1
Mixed Content Test (HTTP over HTTPS)
98% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage does not use mixed content - both the initial HTML and all other resources are loaded over HTTPS.
HTTP2 Test
100% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using the HTTP/2 protocol.
HSTS Test
82% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is not using the Strict-Transport-Security header! This is a security header that was created as a way to force the browser to use secure connections when a site is running over HTTPS.
Plaintext Emails Test
100% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
We've found 3 email addresses in your page code! We advise you to protect email links in a way that hides them from the spam harvesters.
Unsafe Cross-Origin Links Test
49% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using target="_blank" links without rel="noopener" or rel="noreferrer" attribute, which can expose it to performance and security issues!
Mobile usability
Score:100
Failed:0
Warnings:0
Passed:3
Meta Viewport Test
88% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using a viewport meta tag.
<meta name="viewport" content="width=device-width, initial-scale=1" />Media Query Responsive Test
98% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using CSS media queries, which is the base for responsive design functionalities.
Advanced SEO
Score:54
Failed:4
Warnings:0
Passed:5
Structured Data Test
53% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using structured data.
Custom 404 Error Page Test
67% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This website is not using a custom 404 error page! Default 404 error pages result in a poor experience - it can mislead users into thinking an entire site is down or broken, greatly increases the chance they leave the website entirely, and looks unprofessional. We recommend to have a custom 404 error page in order to improve the website's user experience by letting users know that only a specific page is missing/broken (and not the entire site), providing them helpful links, the opportunity to report bugs, and potentially track the source of broken links.
Meta Refresh Test
96% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is not using a meta refresh tag.
SPF Records Test
95% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This DNS server is using an SPF record.
v=spf1 redirect=_spf.yandex.net
Ads.txt Validation Test
68% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The request of ads.txt file has an unexpected Content-Type header: text/html; charset=UTF-8. In order for this resource to be easily accessed by the DSPs and advertisers, its Content-Type header should be text/plain or text/plain; charset=utf-8.
