At least one JSON-LD block with @type and no unreadable blocks
JSON-LD describes entities and relationships in a machine-readable form. Parsing JSON is separate from validating required search feature properties.
Recommended action
Match markup to visible content and validate it with a rich result testing tool. Eligibility does not guarantee display.
Targets and suggested changes
Targethttps://knuh.kr/
Response HTML <head> / script[type=application/ld+json]
Use the example JSON in an application/ld+json script only when it matches the page. Fix existing JSON syntax first and validate any rich-result requirements separately.
View evidence and example changes
Observed content
0
Example - adapt to the actual content and environment
There are no warning or unknown checks in this section.
Sharing metadataExpand
Result
No matching metadata found.
Structured data0 types
No parseable JSON-LD was found.
02
Content and images
5 checks
Headings
Needs review
H1 0 / H2 0 / H3 0
Headings organize a page into a main topic and supporting sections. This tool checks for one H1 and shows the saved H2-H6 structure.
Recommended action
Use H1 for the main subject and H2/H3 for logical subsections, rather than selecting levels for visual size alone.
Targets and suggested changes
Targethttps://knuh.kr/
Body h1 elements
If multiple H1s are shown, choose the main topic and use suitable subsection levels for the others. If absent, add the main heading near the start of content.
View evidence and example changes
Observed content
0
Example - adapt to the actual content and environment
<h1>Main topic of this page</h1>
Image alt
Needs review
16 images; 0 with non-empty alt; 16 empty or missing
Alternative text conveys an image’s meaning. The count includes images with non-empty alt text.
Recommended action
Describe informative images in context. Empty alt="" can be appropriate for decorative images, so inspect their purpose before changing them.
Targets and suggested changes
Targethttps://knuh.kr/img/intro/side_shadow.png
HTML response line 47 · /html/body/div/ul/li[1]/a/p/img
Find the img tag using this URL. Describe informative content, or explicitly use empty alt for a decorative image. The text below is a placeholder; preserve existing classes, dimensions and other attributes.
View evidence and example changes
Observed content
<img src="/img/intro/side_shadow.png" alt="">
Example - adapt to the actual content and environment
<img src="https://knuh.kr/img/intro/side_shadow.png" alt="Describe the actual image content">
For a decorative image:
<img src="https://knuh.kr/img/intro/side_shadow.png" alt="">
Targethttps://knuh.kr/img/intro/logo1.png
HTML response line 50 · /html/body/div/ul/li[1]/a/dl/dt/p[1]/img
Find the img tag using this URL. Describe informative content, or explicitly use empty alt for a decorative image. The text below is a placeholder; preserve existing classes, dimensions and other attributes.
View evidence and example changes
Observed content
<img src="/img/intro/logo1.png" alt="">
Example - adapt to the actual content and environment
<img src="https://knuh.kr/img/intro/logo1.png" alt="Describe the actual image content">
For a decorative image:
<img src="https://knuh.kr/img/intro/logo1.png" alt="">
Targethttps://knuh.kr/img/intro/arow.png
HTML response line 54 · /html/body/div/ul/li[1]/a/dl/dd/p[1]/img
Find the img tag using this URL. Describe informative content, or explicitly use empty alt for a decorative image. The text below is a placeholder; preserve existing classes, dimensions and other attributes.
View evidence and example changes
Observed content
<img src="/img/intro/arow.png" alt="">
Example - adapt to the actual content and environment
<img src="https://knuh.kr/img/intro/arow.png" alt="Describe the actual image content">
For a decorative image:
<img src="https://knuh.kr/img/intro/arow.png" alt="">
Targethttps://knuh.kr/img/intro/txt1.png
HTML response line 56 · /html/body/div/ul/li[1]/a/dl/dd/p[3]/img
Find the img tag using this URL. Describe informative content, or explicitly use empty alt for a decorative image. The text below is a placeholder; preserve existing classes, dimensions and other attributes.
View evidence and example changes
Observed content
<img src="/img/intro/txt1.png" alt="">
Example - adapt to the actual content and environment
<img src="https://knuh.kr/img/intro/txt1.png" alt="Describe the actual image content">
For a decorative image:
<img src="https://knuh.kr/img/intro/txt1.png" alt="">
Targethttps://knuh.kr/img/intro/side_shadow.png
HTML response line 64 · /html/body/div/ul/li[2]/a/p/img
Find the img tag using this URL. Describe informative content, or explicitly use empty alt for a decorative image. The text below is a placeholder; preserve existing classes, dimensions and other attributes.
View evidence and example changes
Observed content
<img src="/img/intro/side_shadow.png" alt="">
Example - adapt to the actual content and environment
<img src="https://knuh.kr/img/intro/side_shadow.png" alt="Describe the actual image content">
For a decorative image:
<img src="https://knuh.kr/img/intro/side_shadow.png" alt="">
16 targets; the first five are shown. Review the full saved list in the details below.
Language
Passed
ko
The html lang attribute identifies the document’s primary language and helps assistive software select pronunciation.
Keep in mind
Match lang to the main content and mark passages written in another language as appropriate.
Charset
Passed
utf-8
The encoding declaration tells clients how to decode text. It must match the actual response bytes.
Keep in mind
Keep the HTTP or HTML charset declaration consistent with the file encoding; use UTF-8 for UTF-8 content.
Text/HTML ratio
Needs review
0.1%
Tool reference range 15-70%; not an official ranking threshold.
This compares visible text length with HTML length. It cannot determine content quality or rankings on its own.
Recommended action
Do not add filler text to target a ratio. Check for useful HTML content and unnecessary markup.
Targets and suggested changes
Targethttps://knuh.kr/
main / body
Check whether main content exists in the initial HTML. Consider server rendering for missing core text; do not add filler to target a ratio.
View evidence and example changes
Observed content
0.1%
There are no warning or unknown checks in this section.
Heading structure
Saved headings, up to 50 per level. Expand the H2-H6 lists when needed.
H10
H20
H30
H40
H50
H60
H1
No H1 heading was found.
H2 0View headings
No headings at this level.
H3 0View headings
No headings at this level.
Images and alternative text16 saved
Up to 100 images are saved. Review an image’s purpose when its alt text is empty.
URL
Image alt
https://knuh.kr/img/intro/side_shadow.png
Empty or missing
https://knuh.kr/img/intro/logo1.png
Empty or missing
https://knuh.kr/img/intro/arow.png
Empty or missing
https://knuh.kr/img/intro/txt1.png
Empty or missing
https://knuh.kr/img/intro/side_shadow.png
Empty or missing
https://knuh.kr/img/intro/logo2.png
Empty or missing
https://knuh.kr/img/intro/arow.png
Empty or missing
https://knuh.kr/img/intro/txt2.png
Empty or missing
https://knuh.kr/img/intro/side_shadow.png
Empty or missing
https://knuh.kr/img/intro/logo3.png
Empty or missing
https://knuh.kr/img/intro/arow.png
Empty or missing
https://knuh.kr/img/intro/txt3.png
Empty or missing
https://knuh.kr/img/intro/side_shadow.png
Empty or missing
https://knuh.kr/img/intro/logo4.png
Empty or missing
https://knuh.kr/img/intro/arow.png
Empty or missing
https://knuh.kr/img/intro/txt4.png
Empty or missing
KeywordsFrequency and metadata
Word occurrence counts from extracted content, not search demand or keyword rankings.
경북대학교병원1
Meta keywords · 경북대학교병원
Meta keywords do not contribute to this tool’s score.
03
Links and navigation
2 checks
Internal links
Passed
1 internal · 3 external · 0 nofollow
This counts links to the same site. Navigation and contextual links create routes to related information.
Keep in mind
Link important pages with standard a href links and use text that describes the destination.
Friendly URLs
Passed
The current check passed.
This heuristic detects query strings and underscores. Their presence does not make a URL invalid or unindexable.
Keep in mind
Use understandable paths and manage redundant parameters. Review existing links and redirects before changing working URLs.
There are no warning or unknown checks in this section.
Internal links1
External links3
nofollow0
Link destinations, text and attributes4 saved
Up to 300 extracted links. Destination status codes and linked pages are not individually checked.
This detects a link declaration for a browser icon, rather than verifying its rendered appearance.
Keep in mind
Check that the icon file loads and remains recognizable on light and dark browser surfaces.
Apple touch icon
Passed
The current check passed.
This detects a touch icon declaration for saved home-screen shortcuts.
Keep in mind
Review the icon’s dimensions, padding and background, then inspect it on an actual device.
Modern images
Needs review
0/16
This detects WebP/AVIF from img src/srcset extensions and picture source types. Images whose format cannot be inferred from HTML, such as extensionless CDN URLs, may not be reflected in the count.
Recommended action
Compare quality and file size, and inspect the actual delivered format in browser developer tools.
Targets and suggested changes
Targethttps://knuh.kr/img/intro/side_shadow.png
HTML response line 47 · /html/body/div/ul/li[1]/a/p/img
Convert this file to WebP/AVIF and use the actual converted URL. Do not merely rename its extension. Keep it if the CDN already serves a modern format.
View evidence and example changes
Observed content
<img src="/img/intro/side_shadow.png" alt="">
Example - adapt to the actual content and environment
HTML response line 50 · /html/body/div/ul/li[1]/a/dl/dt/p[1]/img
Convert this file to WebP/AVIF and use the actual converted URL. Do not merely rename its extension. Keep it if the CDN already serves a modern format.
View evidence and example changes
Observed content
<img src="/img/intro/logo1.png" alt="">
Example - adapt to the actual content and environment
HTML response line 54 · /html/body/div/ul/li[1]/a/dl/dd/p[1]/img
Convert this file to WebP/AVIF and use the actual converted URL. Do not merely rename its extension. Keep it if the CDN already serves a modern format.
View evidence and example changes
Observed content
<img src="/img/intro/arow.png" alt="">
Example - adapt to the actual content and environment
HTML response line 56 · /html/body/div/ul/li[1]/a/dl/dd/p[3]/img
Convert this file to WebP/AVIF and use the actual converted URL. Do not merely rename its extension. Keep it if the CDN already serves a modern format.
View evidence and example changes
Observed content
<img src="/img/intro/txt1.png" alt="">
Example - adapt to the actual content and environment
HTML response line 64 · /html/body/div/ul/li[2]/a/p/img
Convert this file to WebP/AVIF and use the actual converted URL. Do not merely rename its extension. Keep it if the CDN already serves a modern format.
View evidence and example changes
Observed content
<img src="/img/intro/side_shadow.png" alt="">
Example - adapt to the actual content and environment
16 targets; the first five are shown. Review the full saved list in the details below.
There are no warning or unknown checks in this section.
05
Technical checks
8 checks
Doctype
Passed
html
The doctype declaration helps browsers render HTML in standards mode.
Keep in mind
Place <!doctype html> at the start of the document and check for unintended output before it.
CSS files
Passed
2
Tool heuristic: up to 4 external files
This counts external stylesheet declarations. Count alone does not measure transfer size, caching or render blocking.
Keep in mind
Inspect duplicate or unused CSS and render blocking, then prioritize changes using actual performance measurements.
JavaScript files
Passed
3
Tool heuristic: up to 6 external files
This counts script elements with src attributes. File count alone cannot measure execution cost or responsiveness.
Keep in mind
Review duplicated scripts and expensive startup work; consider defer, async or delayed execution where appropriate.
Compression
Needs review
The expected configuration was not detected.
This checks the HTML Content-Encoding header. Compression can reduce transfer size, with savings depending on the response.
Recommended action
Review text compression on the server or CDN, treating already compressed image formats separately.
Targets and suggested changes
Targethttps://knuh.kr/
Server / CDN compression settings
Enable actual gzip/Brotli compression for this response and verify transfer size. Do not manually add Content-Encoding without compressing the body.
View evidence and example changes
Example - adapt to the actual content and environment
Content-Encoding: gzip
Security headers
Needs review
0/6
Tool heuristic: at least 3 of 6 selected headers present
This detects selected security-related response headers. Their count does not establish policy quality or protection.
Recommended action
Review CSP, HSTS and other values for the application, then test for blocked resources or broken functionality.
Targets and suggested changes
Targethttps://knuh.kr/
Web server / CDN response headers
These headers were absent. Configure response headers in the actual server/CDN settings: .htaccess or VirtualHost for Apache, or the Nginx server block. Validate the two example headers first; design CSP/HSTS for the real resources and HTTPS policy. The actual server configuration path is not visible to this tool.
This checks for a text response at /llms.txt. Its presence does not guarantee use by an AI service or search visibility.
Recommended action
If you publish one, describe public resources accurately and keep its content and links current.
Targets and suggested changes
Targethttps://knuh.kr/llms.txt
/llms.txt
If desired, publish UTF-8 text at the root and add real public documentation links. This is optional.
View evidence and example changes
Example - adapt to the actual content and environment
# 경북대학교병원
- [Home](https://knuh.kr/)
AI crawlers
Passed
AI search/answer bots allowed 5/5 · training bots allowed 3/3
Passes when every AI search/answer bot is allowed; training bots are shown for reference only
This interprets root-path robots.txt rules for five AI search/answer bots (which read pages to cite them in answers) and three training bots. Only the search/answer bots decide the result; training bots are shown for reference. Actual citations are not checked.
Keep in mind
Allow the search/answer bots if you want to be cited in AI answers. Blocking training crawlers is a policy choice and does not affect this result.
There are no warning or unknown checks in this section.
Bot access to the root path
OAI-SearchBot Search/answerAllowed
ChatGPT-User Search/answerAllowed
Claude-SearchBot Search/answerAllowed
Claude-User Search/answerAllowed
PerplexityBot Search/answerAllowed
GPTBot TrainingAllowed
ClaudeBot TrainingAllowed
Google-Extended TrainingAllowed
robots.txt sourceExpand
User-agent: *
Disallow: /*b_num=
Allow: /
07
PageSpeed Insights
External performance test
Run Google Lighthouse performance, accessibility, best practices and SEO checks. Device-specific results are cached for one day and are separate from the overall score above.