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Report generated a month ago
https://blog.suhjae.dev
Your general SEO Checkup Score
Archived
70/100
SEO Score
Average SEO score of top 100 sites: 74%
This website received an SEO score of 70 out of 100, which is below the average score of 74. However, there are 15 important issues that need to be fixed to improve your website's ranking on search engines and enhance its overall performance.
15 Failed
4 Warnings
55 Passed
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.
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
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
Connect your webpage with social media networks using APIs or AddThis, as social signals are becoming increasingly important for search engines to validate a site's trustworthiness and authority.
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.
MEDIUM
To provide a good user experience, Google recommends that sites should aim for a First Contentful Paint value of 1.8 seconds or less.
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
Add a Google Analytics script to this website to help in diagnosing potential SEO issues by monitoring site visitors and traffic sources.
LOW
Without an SPF record, spammers can easily spoof emails from this domain, potentially leading to compromised email security and deliverability issues.
LOW
Using more than 20 HTTP requests on a webpage can negatively impact the loading time.
LOW
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.
Common SEO issues
Score: 58
Failed: 6
Warnings: 2
Passed: 18
Meta Title Test100% of top 100 sites passed
  • This webpage is using a title tag with a length of 17 characters. While there's no target number of characters, titles should be descriptive and concise. Using a title tag with less than 20 characters is a missed opportunity since it can be difficult to fit all your targeted keywords in such a short text.
    We recommend using a title with a length between 20 - 60 characters in order to fit Google Search results that have a 600-pixel limit.
Text: SuhJae's Atheneum
Length: 17 characters
Meta Description Test96% of top 100 sites passed
  • This webpage is using a meta description tag.
Text: Follow Jay Suh's journey from Seoul's rich traditions to Silicon's tech innovations. A high school developer's chronicle blending Korean culture & coding.
Length: 154 characters
Google Search Results Preview Test
Desktop version
https://blog.suhjae.dev/SuhJae's AtheneumFollow Jay Suh's journey from Seoul's rich traditions to Silicon's tech innovations. A high school developer's chronicle blending Korean culture & coding.
Mobile version
https://blog.suhjae.dev/SuhJae's AtheneumFollow Jay Suh's journey from Seoul's rich traditions to Silicon's tech innovations. A high school developer's chronicle blending Korean culture & coding.
Social Media Meta Tags Test89% of top 100 sites passed
  • This webpage is using social media meta tags.
Open Graph Meta Tags
og:site_name
SuhJae's Atheneum
og:type
website
og:title
SuhJae's Atheneum
og:description
Follow Jay Suh's journey from Seoul's rich traditions to Silicon's tech innovations. A high school developer's chronicle blending Korean culture & coding.
og:url
https://blog.suhjae.dev/
og:image
https://blog.suhjae.dev/content/images/2024/08/3G1A8619-------------------.jpg
og:image:width
1200
og:image:height
800
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.
11read10computer10science9year6months
Keywords Usage Test45% 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
read
computer
science
year
months
Keywords Cloud Test
algorithmalgorithmicalgorithmsarrayarticlesatheneumbetraysclassescodecomplexitycomputerdarkdesksdocsdoorseditionemailsencapsulationfeaturedgoogleguidingheroeshomeinfiniteinheritanceintroductionjaewoongkisjlearninglifelightlogicloopmasteringmathematicalmessymethodsmodemonthsobjectspagereadrecentrecursionsafeguardingsciencesecretsortingsuhjaesymbolstagstoggleunderstandingundounsungyear
Competitor Domains Test
Understand your competitors' SEO and backlink profile

Get related competitors and their domain authority score in relation to your domain.

Heading Tags Test59% of top 100 sites passed
  • This webpage contains too many H2 tags! H2 tags should re-inforce the related content of your page to search engines - too many tags may make the topic less clear, or look like spam tactics. Consider using less than 10 H2 tags.
H1 tags
SuhJae's Atheneum
H2 tags
When 'Undo' Isn't Enough and Google Docs Betrays You: git
12.c: Safeguarding Our Data with Encapsulation
12.b: Mastering Inheritance with Doors and Desks
12.a: Understanding Classes and Objects
11: 2D array == pow(fun, 2)
The Mathematical Symbols Guiding Algorithmic Logic
10.b: The Secret Code of Algorithm Complexity and Big O
10.a: When Life's Too Messy, Use Sorting Algorithms
9: Recursion, the Infinite Loop of Emails
8: The Unsung Heroes of Code, Methods
7: Array, but in KISJ Edition
Robots.txt Test99% of top 100 sites passed
  • This website is using a robots.txt file.
https://blog.suhjae.dev/robots.txt
Sitemap Test74% of top 100 sites passed
  • This website has a sitemap file.
https://blog.suhjae.dev/sitemap.xml
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SEO Friendly URL Test25% of top 100 sites passed
  • All links from this webpage are SEO friendly.
Image Alt Test71% of top 100 sites passed
  • This webpage is using "img" tags with empty or missing "alt" attribute!
See full list
Responsive Image Test28% 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.
See results list
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!
See results list
Inline CSS Test8% of top 100 sites passed
  • This webpage is not using inline CSS styles.
Deprecated HTML Tags Test94% of top 100 sites passed
  • This webpage does not use HTML deprecated tags.
Google Analytics Test65% of top 100 sites passed
  • A Google Analytics script is not detected on this page. While there are several tools available to monitor your site's visitors and traffic sources, Google Analytics is a free, commonly recommended program to help diagnose potential SEO issues.
Favicon Test100% of top 100 sites passed
  • favicon
    This website appears to have a favicon.
JS Error Test79% of top 100 sites passed
  • There are no severe JavaScript errors on this webpage.
Console Errors Test41% of top 100 sites passed
  • This webpage doesn't have any warnings or errors caught by the Chrome DevTools Console.
Charset Declaration Test100% of top 100 sites passed
  • This webpage has a character encoding declaration.
Content-Type: text/html; charset=utf-8
Social Media Test57% of top 100 sites passed
  • This webpage is not connected with social media using the API's provided by Facebook, Google +, Twitter, Pinterest, or using addthis.com
Speed optimizations
Score: 70
Failed: 6
Warnings: 1
Passed: 18
HTML Page Size Test21% of top 100 sites passed
  • The size of this webpage's HTML is 8.68 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 Test54% of top 100 sites passed
  • The Document Object Model (DOM) of this webpage has 275 nodes which is less than the recommended value of 1,500 nodes.
HTML Compression/GZIP Test97% of top 100 sites passed
  • This webpage is successfully compressed using zstd compression on your code. The HTML code is compressed from 43.08 Kb to 8.68 Kb (80% size savings). This helps ensure a faster loading webpage and improved user experience.
Site Loading Speed Test66% of top 100 sites passed
  • The loading time of this webpage (measured from N. Virginia, US) is around 6.34 seconds and is greater than the average loading speed which is 5 seconds!
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JS Execution Time Test71% 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
90.6 %
3.91 Mb
javascript
7.4 %
328.77 Kb
font
1.3 %
58.60 Kb
css
0.5 %
21.50 Kb
html
0.1 %
6.32 Kb
other
0.0 %
0 B
TOTAL
100%
4.32 Mb
Requests by content type
Content type
Percent
Requests
image
52.6 %
20
javascript
21.1 %
8
css
13.2 %
5
font
10.5 %
4
html
2.6 %
1
other
0.0 %
0
TOTAL
100%
38
Content size by domain
Domain
Percent
Size
images.unsplash.com
83.0 %
3.59 Mb
blog.suhjae.dev
12.0 %
529.98 Kb
cdn.jsdelivr.net
5.0 %
220.53 Kb
TOTAL
100%
4.32 Mb
Requests by domain
Domain
Percent
Requests
blog.suhjae.dev
50.0 %
19
images.unsplash.com
39.5 %
15
cdn.jsdelivr.net
10.5 %
4
TOTAL
100%
38
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 Test97% of top 100 sites passed
  • This webpage is serving all images, javascript and css resources from CDNs.
See results list
Modern Image Format Test38% 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.
See results list
Image Metadata Test72% of top 100 sites passed
  • This webpage is not using images with large metadata.
Image Caching Test97% 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 Test95% of top 100 sites passed
  • This webpage is using cache headers for all JavaScript resources.
CSS Caching Test96% of top 100 sites passed
  • This webpage is using cache headers for all CSS resources.
JavaScript Minification Test96% of top 100 sites passed
  • All JavaScript files used by this webpage are minified.
See results list
CSS Minification Test100% of top 100 sites passed
  • All CSS resources used by this webpage are minified.
See results list
Render Blocking Resources Test10% 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.
See results list
Nested Tables Test99% 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 Test98% 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 Test98% of top 100 sites passed
  • The Time To First Byte value of this webpage is 0.816 seconds. To provide a good user experience, Google recommends that sites should strive to have a TTFB of 0.8 seconds or less.

0.816 s

0.8 s

1.8 s

First Contentful Paint Test94% of top 100 sites passed
  • The First Contentful Paint value of this webpage is 4.710 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.

4.71 s

1.8 s

3 s

Largest Contentful Paint Test90% of top 100 sites passed
  • The Largest Contentful Paint duration of this webpage is 6.91 seconds. To provide a good user experience, Google recommends that sites should strive to have Largest Contentful Paint of 2.5 seconds or less.

6.91 s

2.5 s

4 s

Largest Contentful Paint element within the viewport:
<img srcset=" /content/images/size/w300/2024/08/3G1A8..." sizes="(max-width: 600px) 600px, (max-width: 1000px) 1000..." src="/content/images/size/w1000/2024/08/3G1A8619-------..." alt="">
Cumulative Layout Shift Test94% 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
Server and security
Score: 79
Failed: 2
Warnings: 0
Passed: 8
URL Canonicalization Test97% of top 100 sites passed
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 "blog.suhjae.dev" 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
suhjae.dev
Subject Alternative Names (SANs)
suhjae.dev, *.suhjae.dev
Not valid before
Sat, October 5o 2024, 9:52:09 pm (z)
Not valid after
Fri, January 3o 2025, 9:52:08 pm (z)
Signature algorithm
ecdsaWithSha256
Issuer
WE1
Intermediate certificate
Common name
WE1
Organization
Google Trust Services
Location
US
Not valid before
Wed, December 13o 2023, 9:00:00 am (z)
Not valid after
Tue, February 20o 2029, 2:00:00 pm (z)
Signature algorithm
ecdsaWithSha384
Issuer
GTS Root R4
Root certificate
Common name
GTS Root R4
Organization
Google Trust Services LLC
Location
US
Not valid before
Wed, June 22o 2016, 12:00:00 am (z)
Not valid after
Sun, June 22o 2036, 12:00:00 am (z)
Signature algorithm
ecdsaWithSha384
Issuer
GTS Root R4
Mixed Content Test (HTTP over HTTPS)98% 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 Test100% of top 100 sites passed
  • This webpage is using the HTTP/2 protocol.
HSTS Test82% of top 100 sites passed
  • 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.
Safe Browsing Test100% of top 100 sites passed
  • This website is not currently listed as suspicious (no malware or phishing activity found).
Server Signature Test98% 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 Test100% of top 100 sites passed
  • This webpage does not include email addresses in plaintext.
Mobile usability
Score: 100
Failed: 0
Warnings: 0
Passed: 3
Meta Viewport Test88% 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
Mobile view
Advanced SEO
Score: 90
Failed: 1
Warnings: 1
Passed: 8
Structured Data Test53% of top 100 sites passed
  • This webpage is using structured data.
See results list
Custom 404 Error Page Test67% of top 100 sites passed
  • This website is using a custom 404 error page. 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 Test98% 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 is using the canonical link tag. This tag specifies that the URL: https://blog.suhjae.dev/ is preferred to be used in search results. Please ensure that this specification is correct, as canonical tags are often hard-coded and may not always reflect the latest changes in a site's URL structure.
<link href="https://blog.suhjae.dev/" rel="canonical"/>
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
  • Your robots.txt file includes a disallow command which instructs search engines to avoid certain parts of your website! You are advised to confirm if access to these resources or pages are intended to be blocked (e.g., if they contain internal-only content or sensitive information).
See results list
Meta Refresh Test96% of top 100 sites passed
  • This webpage is not using a meta refresh tag.
SPF Records Test95% of top 100 sites passed
  • This DNS server is not using an SPF record! SPF (Sender Policy Framework) allows administrators to specify which hosts are allowed to send mail from a given domain by creating a specific SPF record or TXT record in the Domain Name System (DNS). You can find more information about SPF records here.
Ads.txt Validation Test68% 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.
Spell Check Test
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Finding and fixing misspellings on your webpage will help both user experience and search engine rankings.

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