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://siwff.or.kr/eng/default.asp
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
{
"@context": "https://schema.org",
"@type": "WebPage",
"url": "https://siwff.or.kr/eng/default.asp",
"name": "SIWFF Seoul International Women's Film Festival"
}
There are no warning or unknown checks in this section.
Sharing metadataExpand
og:locale
ko_KR
og:type
website
og:title
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://siwff.or.kr/eng/default.asp
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
Passed
0 images; 0 with non-empty alt; 0 empty or missing
Alternative text conveys an image’s meaning. The count includes images with non-empty alt text.
Keep in mind
Describe informative images in context. Empty alt="" can be appropriate for decorative images, so inspect their purpose before changing them.
Language
Needs review
The expected configuration was not detected.
The html lang attribute identifies the document’s primary language and helps assistive software select pronunciation.
Recommended action
Match lang to the main content and mark passages written in another language as appropriate.
Targets and suggested changes
Targethttps://siwff.or.kr/eng/default.asp
html[lang]
Set the html lang attribute to the actual primary language; the example must match your content.
View evidence and example changes
Example - adapt to the actual content and environment
<html lang="en">
Charset
Passed
euc-kr
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
Passed
23.25%
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.
Keep in mind
Do not add filler text to target a ratio. Check for useful HTML content and unnecessary markup.
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 text0 saved
Up to 100 images are saved. Review an image’s purpose when its alt text is empty.
URL
Image alt
KeywordsFrequency and metadata
Word occurrence counts from extracted content, not search demand or keyword rankings.
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.
Keep in mind
Compare quality and file size, and inspect the actual delivered format in browser developer tools.
Lazy loading
Passed
0/0
This detects loading="lazy" on img elements. Pages with few images can pass the tool’s heuristic without it.
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
0
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
0
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://siwff.or.kr/eng/default.asp
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://siwff.or.kr/eng/default.asp
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 whether the final analyzed page used HTTPS. It is not a security audit of the whole site.
Keep in mind
Review certificate validity, mixed content and HTTPS on important linked pages and forms.
HTTPS redirect
Passed
https://siwff.or.kr/eng/default.asp
This checks whether a request starting over HTTP ends on HTTPS.
Keep in mind
Configure consistent HTTP-to-HTTPS redirects and check for unnecessary chains or loops.
W3C validity
Needs review
820 errors · 48 warnings / notices
These are HTML validation results from W3C Nu, not a ranking, accessibility or security certification.
Recommended action
Use message details and line numbers to investigate actual markup issues such as invalid nesting or missing attributes.
Targets and suggested changes
Targethttps://siwff.or.kr/eng/default.asp
HTML response line 13
Malformed byte sequence: “bc”.
Find the template producing this tag or attribute and validate again. The line number refers to response HTML, not a PHP source file.
Targethttps://siwff.or.kr/eng/default.asp
HTML response line 13
Malformed byte sequence: “ad”.
Find the template producing this tag or attribute and validate again. The line number refers to response HTML, not a PHP source file.
Targethttps://siwff.or.kr/eng/default.asp
HTML response line 13
Malformed byte sequence: “bf”.
Find the template producing this tag or attribute and validate again. The line number refers to response HTML, not a PHP source file.
Targethttps://siwff.or.kr/eng/default.asp
HTML response line 13
Malformed byte sequence: “c1”.
Find the template producing this tag or attribute and validate again. The line number refers to response HTML, not a PHP source file.
Targethttps://siwff.or.kr/eng/default.asp
HTML response line 13
Malformed byte sequence: “a6”.
Find the template producing this tag or attribute and validate again. The line number refers to response HTML, not a PHP source file.
30 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.
Security response headersView values
strict-transport-security
Not found
content-security-policy
Not found
x-content-type-options
Not found
x-frame-options
Not found
referrer-policy
Not found
permissions-policy
Not found
W3C messages30 saved
Up to 30 messages are saved.
errorLine 13
Malformed byte sequence: “bc”.
errorLine 13
Malformed byte sequence: “ad”.
errorLine 13
Malformed byte sequence: “bf”.
errorLine 13
Malformed byte sequence: “c1”.
errorLine 13
Malformed byte sequence: “a6”.
errorLine 13
Malformed byte sequence: “bf”.
errorLine 13
Malformed byte sequence: “a9”.
errorLine 13
Malformed byte sequence: “bc”.
errorLine 13
Malformed byte sequence: “ba”.
errorLine 13
Malformed byte sequence: “bf”.
errorLine 13
Malformed byte sequence: “b5”.
errorLine 13
Malformed byte sequence: “c1”.
errorLine 13
Malformed byte sequence: “a6”.
errorLine 14
Malformed byte sequence: “bc”.
errorLine 14
Malformed byte sequence: “ad”.
errorLine 14
Malformed byte sequence: “bf”.
errorLine 14
Malformed byte sequence: “c1”.
errorLine 14
Malformed byte sequence: “a6”.
errorLine 14
Malformed byte sequence: “bf”.
errorLine 14
Malformed byte sequence: “a9”.
errorLine 14
Malformed byte sequence: “bc”.
errorLine 14
Malformed byte sequence: “ba”.
errorLine 14
Malformed byte sequence: “bf”.
errorLine 14
Malformed byte sequence: “b5”.
errorLine 14
Malformed byte sequence: “c1”.
errorLine 14
Malformed byte sequence: “a6”.
errorLine 14
Malformed byte sequence: “bf”.
errorLine 14
Malformed byte sequence: “a9”.
errorLine 14
Malformed byte sequence: “bc”.
errorLine 14
Malformed byte sequence: “ba”.
06
Search and AI crawlers
4 checks
Robots.txt
Needs review
The expected configuration was not detected.
This checks the robots.txt response. File presence does not verify all crawler permissions or actual indexing.
Recommended action
Review bot and path rules for your intended policy. Protect private information with authentication and access controls.
Targets and suggested changes
Targethttps://siwff.or.kr/robots.txt
/robots.txt
Serve plain text at the domain root. Adapt this public-access example to your actual path and crawler policy.
View evidence and example changes
Example - adapt to the actual content and environment
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://siwff.or.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
# SIWFF Seoul International Women's Film Festival
- [Home](https://siwff.or.kr/eng/default.asp)
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
No robots.txt response was saved.
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.