sdan.com.tw SEO Report | SEO Site Checkup

Pricing Free Tools Articles

Report generated 4 days ago

https://sdan.com.tw

Your general SEO Checkup Score

Archived

68/100

SEO Score

Average SEO score of top 100 sites: 75%

This website received an SEO score of 68 out of 100, which is below the average score of 75. However, there are 17 important issues that need to be fixed to improve your website's ranking on search engines and enhance its overall performance.

17 Failed

3 Warnings

52 Passed

Issues to fix

HIGH

To address URL canonicalization issues, it is recommended to select a primary URL for your webpage and set up redirects from all other variations to the preferred one.

HIGH

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.

HIGH

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.

HIGH

Consider using structured data in your webpage as it can help search engines gain a better understanding of your content.

HIGH

To improve the website experience for your visitors, it is recommended to eliminate any render-blocking resources on this webpage.

HIGH

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.

HIGH

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.

HIGH

Add descriptive and relevant "alt" attributes to all "img" tags to improve website accessibility.

HIGH

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.

MEDIUM

Add a robots.txt file to properly communicate with web crawlers and prevent unwanted access to sensitive content.

MEDIUM

JavaScript errors can impact user experience and may prevent users from viewing the page properly.

MEDIUM

Serve properly sized images to reduce page loading times and to improve user's experience.

MEDIUM

Avoid using distorted images, as they can have a negative impact on the user experience.

MEDIUM

Avoid performance and security issues by adding "rel=noopener" or "rel=noreferrer" to your "target=_blank" links.

LOW

To protect against spam harvesters, consider hiding or obfuscating email addresses in your page code.

LOW

Using more than 20 HTTP requests on a webpage can negatively impact the loading time.

LOW

Consider moving inline CSS styles to an external stylesheet to improve site performance and maintain separation of content and design.

Common SEO issues

Score: 54

Failed: 8

Warnings: 1

Passed: 16

Meta Title Test100% of top 100 sites passed

This webpage is using a title tag.

Text: 祥電科技股份有限公司 Sdan Technologies Co., Ltd.

Length: 38 characters

Meta Description Test92% of top 100 sites passed

This webpage is using a meta description tag with a length of 89 characters. We recommend using well-written and inviting meta descriptions with a length between 150 and 220 characters (spaces included).

Text: 祥電科技，可以提供最安全有保障的充電樁規劃與施工丶監視設備配置與安裝丶室內配線與機電整合。讓祥電科技，為您的用電把關。選擇祥電，為你的愛車上電。選擇祥電，為您的家點亮溫馨的大燈！

Length: 89 characters

Google Search Results Preview Test

Desktop version

https://sdan.com.tw/祥電科技股份有限公司 Sdan Technologies Co., Ltd.祥電科技，可以提供最安全有保障的充電樁規劃與施工丶監視設備配置與安裝丶室內配線與機電整合。讓祥電科技，為您的用電把關。選擇祥電，為你的愛車上電。選擇祥電，為您的家點亮溫馨的大燈！

Mobile version

Most Common Keywords Test

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.

3合作企業3聯絡我們2公司介紹2充電樁工程2管理系統

Keywords Usage Test48% of top 100 sites passed

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.

Keyword

Title tag

Meta description

Headings

合作企業

聯絡我們

公司介紹

充電樁工程

管理系統

Keywords Cloud Test

advanceddependableev充電樁規劃設計與系統建置nimblepmp專案管理制度sdanspecialist一級大廠產品安全可靠且符合未來發展趨勢的解決方案並整合實務經驗並與政府單位中正紀念堂等多站月台門及影像監控系統升級案了解更多以及智慧場域導入與維運優化您的能源使用充分展現公共領域的整合與執行能力充電樁工程充電樁設備充電樁設備零售充電營運平台與資料整合介面開發公司介紹具備深厚的技術實力與豐富的工程經驗包括捷運西門卓越的系統整合能力協助客戶在數位與綠能轉型中領先一步協助客戶邁向智慧永續未來台製工程用料品質保證合作企業品質信賴品質與信賴是我們的核心價值堅守施工標準國家證照電匠團隊致力於以高效率多場域建置經驗大型工程施工團隊大廠ems軟體升級維護無虞完整規劃周全負責將電力系統專業充電樁工程專業工程品管專業領導專注於電力系統整合座ev充電系統建置建築開發商與能源平台深度合作微電網架構想了解更多憑藉深厚的電機工程技術根基與實績經驗成為城市智慧化與綠能轉型的重要推進力量我們的團隊專精於各類電力系統規劃與執行我們的服務打造完整的智慧能源架構打造真正具有延展性與永續價值的電力解決方案技術先進持續追求技術捷運工程掌握最新電力工程與智慧能源系統技術推動台灣用電環境的現代化與永續化提升場域彈性與能源使用效能整合靈活施工團隊優勢是電力與能源領域的專業領導者智慧能源應用與電動車充電基礎建設的專業技術公司智慧能源管理系統更導入專業pmp管理流程與系統性專案控管機制更是智慧生活的起點最可靠的解決方案核心技術涵蓋電機施工整合機電整合規劃施工為客戶提供最安全為您的用電把關營業項目甲級承裝業資格監視系統規劃與建置監視與能源管理系統開發監視設備暨錄影系統重置工程目標成為台灣智慧電力服務的技術核心確保每一項專案的品質與時效確保每一項工程從設計到驗收皆能穩定如期社區充電樁營運設計社區充電樁設計規劃祥電團隊將持續投入於ai能源調度祥電科技祥電科技亦參與多項北台灣重大公共工程祥電科技擁有多位甲級電匠祥電科技相信祥電科技股份有限公司管理系統節省成本聯絡我們能源管理讓客戶無後顧之憂逐步擴展高密度通訊與智慧控制無縫整合達成最優品質與運作效率重視細節與工藝電力工程不只是基礎建設電力系統設計與請電工程高可靠性的工程實踐與創新解決方案高效率的城市能源輸送網絡高效的充電解決方案點亮溫馨的大燈

Competitor Domains Test

Heading Tags Test62% of top 100 sites passed

This webpage does not contain H1 headings! H1 headings help indicate the important topics of your page to search engines. While less important than good meta-titles and descriptions, H1 headings may still help define the topic of your page to search engines.

祥電科技股份有限公司

專業充電樁工程

智慧能源管理系統

公司介紹

我們的服務

營業項目

施工團隊優勢

充電樁工程

管理系統 EMS

合作企業

聯絡我們

Robots.txt Test99% of top 100 sites passed

This website lacks a "robots.txt" file. This file can protect private content from appearing online, save bandwidth, and lower load time on your server. A missing "robots.txt" file also generates additional errors in your apache log whenever robots request one. Read more about the robots.txt file, and how to create one for your site.

Sitemap Test83% of top 100 sites passed

This website has a sitemap file.

https://sdan.com.tw/sitemap.xml

SEO Friendly URL Test29% of top 100 sites passed

All links from this webpage are SEO friendly.

Image Alt Test78% of top 100 sites passed

This webpage is using "img" tags with empty or missing "alt" attribute!

Responsive Image Test29% of top 100 sites passed

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 Test75% of top 100 sites passed

Not all image display dimensions match the natural aspect ratio! Fix aspect ratio issues to avoid distorted images on this website!

Inline CSS Test10% of top 100 sites passed

This webpage is using inline CSS styles!

Deprecated HTML Tags Test94% of top 100 sites passed

This webpage does not use HTML deprecated tags.

Google Analytics Test72% of top 100 sites passed

This webpage is using Google Analytics.

Favicon Test100% of top 100 sites passed

This website appears to have a favicon.

Backlinks Test

JS Error Test83% of top 100 sites passed

We've found JavaScript errors on this webpage!

Console Errors Test27% of top 100 sites passed

This webpage doesn't have any warnings or errors caught by the Chrome DevTools Console.

Charset Declaration Test96% of top 100 sites passed

This webpage has a character encoding declaration.

Content-Type: text/html; charset=utf-8

Speed optimizations

Score: 79

Failed: 4

Warnings: 1

Passed: 20

HTML Page Size Test23% of top 100 sites passed

The size of this webpage's HTML is 12.39 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 Test56% of top 100 sites passed

The Document Object Model (DOM) of this webpage has 379 nodes which is less than the recommended value of 1,500 nodes.

HTML Compression/GZIP Test99% of top 100 sites passed

This webpage is successfully compressed using br compression on your code. The HTML code is compressed from 52.11 Kb to 12.39 Kb (76% size savings). This helps ensure a faster loading webpage and improved user experience.

Site Loading Speed Test71% of top 100 sites passed

The loading time of this webpage (measured from N. Virginia, US) is around 7.58 seconds and is greater than the average loading speed which is 5 seconds!

JS Execution Time Test53% of top 100 sites passed

The JavaScript code used by this webpage is executed in less than 2 seconds.

Page Objects Test

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

97.3 %

15.93 Mb

javascript

1.5 %

245.51 Kb

font

0.8 %

127.55 Kb

css

0.4 %

72.66 Kb

html

0.1 %

14.40 Kb

other

0.0 %

0 B

Requests by content type

Content type

Percent

Requests

image

57.1 %

javascript

20.4 %

css

14.3 %

html

6.1 %

font

2.0 %

other

0.0 %

Content size by domain

Domain

Percent

Size

sdan.com.tw

99.2 %

16.25 Mb

googletagmanager.com

0.8 %

136.19 Kb

fonts.googleapis.com

0.0 %

4.14 Kb

Requests by domain

Domain

Percent

Requests

sdan.com.tw

95.9 %

fonts.googleapis.com

2.0 %

googletagmanager.com

2.0 %

Page Cache Test (Server Side Caching)100% of top 100 sites passed

This webpage is using a caching mechanism. Caching helps speed page loading times as well as reduces server load.

Flash Test100% of top 100 sites passed

This webpage does not include flash objects (an outdated technology that was sometimes used to deliver rich multimedia content). Flash content does not work well on mobile devices, and is difficult for crawlers to interpret.

CDN Usage Test95% of top 100 sites passed

This webpage is not serving all resources (images, javascript and css) from CDNs!

Modern Image Format Test43% of top 100 sites passed

This webpage is not serving images in a modern format! Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.

Image Metadata Test72% of top 100 sites passed

This webpage is not using images with large metadata.

Image Caching Test95% of top 100 sites passed

This website is using cache headers for images and the browsers will display these images from the cache.

JavaScript Caching Test96% of top 100 sites passed

This webpage is using cache headers for all JavaScript resources.

CSS Caching Test98% of top 100 sites passed

This webpage is using cache headers for all CSS resources.

JavaScript Minification Test98% of top 100 sites passed

All JavaScript files used by this webpage are minified.

CSS Minification Test100% of top 100 sites passed

All CSS resources used by this webpage are minified.

Render Blocking Resources Test15% of top 100 sites passed

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.

Nested Tables Test100% of top 100 sites passed

This webpage is not using nested tables. This speeds up page loading time and optimizes the user experience.

Frameset Test100% of top 100 sites passed

This webpage does not use frames.

Doctype Test100% of top 100 sites passed

This webpage has a doctype declaration.

<!DOCTYPE html>

URL Redirects Test97% of top 100 sites passed

This URL doesn't have any redirects (which could potentially cause site indexation issues and site loading delays).

Time To First Byte Test99% of top 100 sites passed

The Time To First Byte value of this webpage is 0.006 seconds. To provide a good user experience, Google recommends that sites should strive to have a TTFB of 0.8 seconds or less.

0.006 s

0.8 s

1.8 s

First Contentful Paint Test90% of top 100 sites passed

The First Contentful Paint value of this webpage is 0.880 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.

0.88 s

1.8 s

3 s

Largest Contentful Paint Test77% of top 100 sites passed

The Largest Contentful Paint duration of this webpage is 1.92 seconds. To provide a good user experience, Google recommends that sites should strive to have Largest Contentful Paint of 2.5 seconds or less.

1.92 s

2.5 s

4 s

Largest Contentful Paint element within the viewport:

Text: 祥電科技股份有限公司為您的用電把關，點亮溫馨的大燈

Html: <div class="swiper-slide" style="background-image: url(assets/img/bn/1.png);">

Cumulative Layout Shift Test91% of top 100 sites passed

The CLS score of this webpage is 0.0000. To provide a good user experience, Google recommends that sites should strive to have a CLS score of 0.1 or less.

0.1

0.25

DOM element which contributes the most to CLS score:

Html:

Score: 0.0000

Server and security

Score: 72

Failed: 3

Warnings: 0

Passed: 7

URL Canonicalization Test93% of top 100 sites passed

https://sdan.com.tw/ and https://www.sdan.com.tw/ should resolve to the same URL, but currently do not.

SSL Checker and HTTPS Test100% of top 100 sites passed

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 "sdan.com.tw" 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

sdan.com.tw

Subject Alternative Names (SANs)

sdan.com.tw

Not valid before

Mon, August 25o 2025, 2:14:58 am (z)

Not valid after

Sun, November 23o 2025, 2:14:57 am (z)

Signature algorithm

sha256WithRsaEncryption

Issuer

R13

Intermediate certificate

Common name

R13

Organization

Let's Encrypt

Location

Not valid before

Wed, March 13o 2024, 12:00:00 am (z)

Not valid after

Fri, March 12o 2027, 11:59:59 pm (z)

Signature algorithm

sha256WithRsaEncryption

Issuer

ISRG Root X1

Root certificate

Common name

ISRG Root X1

Organization

Internet Security Research Group

Location

Not valid before

Thu, June 4o 2015, 11:04:38 am (z)

Not valid after

Mon, June 4o 2035, 11:04:38 am (z)

Signature algorithm

sha256WithRsaEncryption

Issuer

ISRG Root X1

Mixed Content Test (HTTP over HTTPS)100% of top 100 sites passed

This webpage does not use mixed content - both the initial HTML and all other resources are loaded over HTTPS.

HTTP2 Test99% of top 100 sites passed

This webpage is using the HTTP/2 protocol.

HSTS Test84% of top 100 sites passed

This webpage is using the Strict-Transport-Security header.

strict-transport-security: max-age=63072000

Safe Browsing Test100% of top 100 sites passed

This website is not currently listed as suspicious (no malware or phishing activity found).

Server Signature Test95% of top 100 sites passed

The server signature is off for this webpage.

Directory Browsing Test100% of top 100 sites passed

Directory browsing is disabled for this website.

Plaintext Emails Test97% of top 100 sites passed

We've found 1 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 Test45% of top 100 sites passed

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 Test92% of top 100 sites passed

This webpage is using a viewport meta tag.

<meta name="viewport" content="width=device-width, initial-scale=1.0" />

Media Query Responsive Test98% of top 100 sites passed

This webpage is using CSS media queries, which is the base for responsive design functionalities.

Mobile Snapshot Test

Advanced SEO

Score: 37

Failed: 2

Warnings: 1

Passed: 6

Structured Data Test66% of top 100 sites passed

This webpage doesn't take the advantages of HTML Microdata or JSON-LD specifications in order to use structured data! View Google's guide for getting started with structured data.

Custom 404 Error Page Test80% of top 100 sites passed

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.

Noindex Tag Test99% of top 100 sites passed

This webpage does not use the noindex meta tag. This means that it can be indexed by search engines.

Canonical Tag Test93% of top 100 sites passed

This webpage does not use the canonical link tag.

Nofollow Tag Test

This webpage does not use the nofollow meta tag. This means that search engines will crawl all links from this webpage.

Disallow Directive Test

This website lacks a "robots.txt" file. This file can protect private content from appearing online, save bandwidth, and lower load on your server. A missing "robots.txt" file also generates additional errors in your apache log whenever robots request one.

Meta Refresh Test98% of top 100 sites passed

This webpage is not using a meta refresh tag.

SPF Records Test94% of top 100 sites passed

This DNS server is using an SPF record.

v=spf1 a mx ptr ip4:210.59.228.0/24 ip4:210.59.229.0/25 include:spf.protection.outlook.com -all

Ads.txt Validation Test67% of top 100 sites passed

This website doesn't use an ads.txt file! Ads.txt is a text file that contains a list of Authorized Digital Sellers. The purpose of ads.txt files is to give advertisers and advertising networks the ability to verify who is allowed to sell advertising on your website.

Report generated 4 days ago

https://sdan.com.tw

Your general SEO Checkup Score

Archived

68/100

SEO Score

Average SEO score of top 100 sites: 75%

17 Failed

3 Warnings

52 Passed

Issues to fix

HIGH

To address URL canonicalization issues, it is recommended to select a primary URL for your webpage and set up redirects from all other variations to the preferred one.

HIGH

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.

HIGH

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.

HIGH

Consider using structured data in your webpage as it can help search engines gain a better understanding of your content.

HIGH

To improve the website experience for your visitors, it is recommended to eliminate any render-blocking resources on this webpage.

HIGH

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.

HIGH

Add descriptive and relevant "alt" attributes to all "img" tags to improve website accessibility.

HIGH

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.

MEDIUM

Add a robots.txt file to properly communicate with web crawlers and prevent unwanted access to sensitive content.

MEDIUM

JavaScript errors can impact user experience and may prevent users from viewing the page properly.

MEDIUM

Serve properly sized images to reduce page loading times and to improve user's experience.

MEDIUM

Avoid using distorted images, as they can have a negative impact on the user experience.

MEDIUM

Avoid performance and security issues by adding "rel=noopener" or "rel=noreferrer" to your "target=_blank" links.

LOW

To protect against spam harvesters, consider hiding or obfuscating email addresses in your page code.

LOW

Using more than 20 HTTP requests on a webpage can negatively impact the loading time.

LOW

Consider moving inline CSS styles to an external stylesheet to improve site performance and maintain separation of content and design.

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