Manifest position 184 · CrUX rank bucket 1000

https://momon-ga.com

Coverage complete

Coverage-complete representative audit of four page archetypes.

Attempts
1 / 3
Judged checks
58 / 58
Blocked
0
Not run
0
This report has no published overall score. Blocked and not-run checks are not passes. A coverage-complete report means every check has a judged outcome; it does not mean every check passed.

All 58 atomic check outcomes

Principle / checkStatusConfidenceEvidence or reason
respect-user-preferences
respects-color-scheme
issueshighThe dark-condition computed-style probe reported colorScheme "normal" while the page uses a dark background; native contact controls remain light.
F01 low: The fixed dark theme does not declare its color scheme.
respect-user-preferences
respects-reduced-motion
issueshighThe reduced-motion probe found a 0.2s transition on the Headroom header under prefers-reduced-motion: reduce.
F02 low: Header motion remains enabled when reduced motion is requested.
respect-user-preferences
respects-contrast
passhighLighthouse contrast audit passed and the contrast-emulation probe retained legible foreground/background styling.
implement-natural-interactions
view-transitions
issueshighDOM and platform probes found no View Transition integration on this multi-page catalog; representative route navigation is a full abrupt swap.
F03 low: Navigation between catalog and detail pages swaps abruptly.
implement-natural-interactions
scroll-driven-animations
passhighNo scroll-linked animations or animation timelines were present, so the page does not use main-thread scroll animation anti-patterns.
implement-natural-interactions
physical-gestures
passhighRepresentative navigation and scrolling use native links and browser scrolling; no custom pointer gesture layer was observed.
provide-guided-navigation
scroll-state-aware-chrome
passhighThe header visibly uses Headroom scroll-state classes and stays compact on mobile.
provide-guided-navigation
anchored-positioning
passhighNo tooltip, popover, or floating menu requiring anchor positioning exists on the exercised paths; no manually drifting overlay was observed.
provide-guided-navigation
directs-attention
passhighPersistent menu/search affordances, clear section titles, and catalog-to-detail links provide an understandable path.
maximize-content-reduce-noise
no-intrusive-interruptions
passhighNo modal, consent wall, or load-time overlay obscured the representative pages.
maximize-content-reduce-noise
semantic-dismissible-primitives
passhighNo modal/transient overlay was present on exercised paths, so no ad-hoc dismissible primitive failed this check.
maximize-content-reduce-noise
reduced-chrome
issueshighMobile screenshots show a large empty/ad slot before page content, and the home HAR attributes requests to numerous ad-tech origins.
F04 medium: Advertising occupies a disproportionate share of the first viewport.
adapt-to-the-form-factor
responsive-no-horizontal-scroll
issueshighAt 360px, layout measured 749px scroll width on home/listing/contact (and one run reached 1920px). The overflow probe identified 728px ad iframes extending to x=749.
F05 high: Desktop ad iframes force severe horizontal overflow on mobile.
adapt-to-the-form-factor
component-level-responsiveness
passhighCatalog cards reflow to a two-column mobile grid and the detail page fits 360px; screenshots directly show component adaptation.
adapt-to-the-form-factor
input-modality-aware
passhighFocused links retain a native visible outline and controls use native HTML semantics.
support-core-task-success
clear-purpose-and-primary-action
passhighHome, listing, detail and contact pages clearly identify their purpose and expose the next action.
support-core-task-success
primary-flow-completion
passhighA user can move from homepage to listing to a content detail without an account wall or dead end.
support-core-task-success
clear-system-state-and-recovery
passhighBlank contact submission produces per-field Japanese errors plus an aria-live summary and permits correction.
be-fast-and-stable
good-core-web-vitals
issueshighLighthouse measured LCP 3.9s and CLS 0.138; the contact mobile layout independently observed CLS 0.0796.
F06 high: Lab LCP and CLS miss good thresholds.
be-fast-and-stable
visual-stability
issueshighThe image audit found 51 of 52 images without width/height attributes; Lighthouse measured CLS 0.138.
F07 high: Most images omit intrinsic dimensions and ads shift layout.
be-fast-and-stable
efficient-main-thread
passhighTrace measured one 76.83ms long task and 26.83ms total blocking time; Lighthouse TBT was 0ms.
be-fast-and-stable
efficient-resource-delivery
issueshighHAR summary recorded 4,777,874 transferred bytes, including 3.80 MB images and 62 font requests; Lighthouse estimated 1.09s render-blocking savings.
F08 high: The homepage transfers 4.78 MB across 113 requests.
be-fast-and-stable
trim-unused-and-duplicate-code
issueshighLighthouse estimated 69 KiB unused CSS and 86 KiB unused JavaScript; third-party ad scripts dominate the script surface.
F09 medium: Unused CSS and JavaScript add avoidable work.
be-inclusive
names-roles-labels
issueshighLighthouse failed image-alt for the hero; probes found the search text input and icon-only submit input without labels.
F10 high: The search field and decorative hero image lack accessible naming.
be-inclusive
sufficient-contrast
passhighLighthouse color-contrast audit passed with no failing nodes.
be-inclusive
structure-and-focus
issueshighLighthouse failed heading-order on repeated h3 section labels; recon found eight h1 elements on the homepage.
F11 medium: Heading hierarchy skips levels and uses multiple page-level headings.
be-inclusive
legible-text
passhighMobile screenshots show readable Japanese text with comfortable line lengths on primary content.
be-inclusive
zoom-reflow-targets-and-media
issueshighThe viewport is maximum-scale=1,user-scalable=no; the listing probe counted 129 of 168 interactive elements below 24px in at least one dimension.
F12 high: The viewport disables pinch zoom and many targets are undersized.
follow-best-practices
no-console-errors
issueshighLighthouse recorded repeated HTTP 403 failures for https://js.ademon.net/t/017/844/a80017844.js.
F13 medium: A third-party ad script repeatedly fails in the console.
follow-best-practices
sound-document-and-assets
passhighAll exercised pages use HTML doctype, UTF-8, unique titles, canonical URLs and modern WebP for most content images.
follow-best-practices
browser-platform-hygiene
passhighLighthouse bfcache passed and probes found standards-based links/forms with no deprecated API evidence.
be-discoverable
title-and-description
passhighEvery representative template has a distinct title and meta description.
be-discoverable
crawlable-and-mobile-friendly
passhighLinks have hrefs, viewport metadata exists, and raw-HTML discoverability is 99% on content templates.
be-discoverable
canonical-and-indexing-signals
passhighRepresentative pages return 200 with canonical and index/follow signals; robots allows general search crawling.
be-discoverable
structured-and-shareable-metadata
issueshighThe platform probe found JSON-LD but no Open Graph or Twitter card meta tags.
F14 low: Structured data is present but social preview metadata is absent.
be-private-and-secure
secure-transport-and-headers
issueshighHeaders found no HSTS, CSP or nosniff; all five first-party cookies lacked Secure and four used SameSite=None.
F15 high: Core transport security headers and cookie flags are missing.
be-private-and-secure
data-minimisation-and-third-parties
issueshighTracker evidence found 15 third-party origins and Google Analytics; Lighthouse found five third-party cookies, while the HAR attributed 105 of 113 requests to non-main origins.
F16 high: The page loads a broad advertising and analytics footprint before consent.
be-private-and-secure
in-context-permissions-and-modern-auth
passhighNo permission prompt or authentication surface appears on the representative public content and contact paths.
be-private-and-secure
defensive-browser-policies
issueshighNo frame protection, Referrer-Policy or Permissions-Policy was present, and no CSP frame-ancestors fallback exists.
F17 high: Browser isolation and permission policies are absent.
be-resilient
progressive-enhancement
passhighDiscoverability captures show 99% content coverage without JavaScript for home, listing and detail templates.
be-resilient
resilient-runtime-behaviour
passhighThe MPA uses native navigation/forms and exercised pages loaded stable content without broken runtime UI.
be-resilient
offline-and-installable
not-applicablehighThis public media catalog is a document-oriented website rather than an installable application; offline/PWA capability is not part of its core task.
be-resilient
network-and-http-failure-states
passhighCore reading/navigation is document-based rather than dependent on fragile client fetches; contact validation exposes actionable failure state.
be-internationalised
lang-dir-and-logical-properties
not-applicablehighThe site is intentionally Japanese-only with no language or bidirectional locale surface in the representative scope.
be-internationalised
locale-aware-data
not-applicablehighNo locale switching or user-entered locale-sensitive number/currency flow exists; dates are fixed Japanese content metadata.
be-internationalised
time-zone-correctness
not-applicablehighNo scheduling, event coordination, duration, recurrence or user time-zone flow exists.
be-trustworthy
no-dark-patterns
passhighAds are labelled PR/Sponsored in the inspected content and no confirmshaming, continuity trap or consent wall appeared.
be-trustworthy
humane-error-handling
passhighBlank contact submission validates after interaction, marks each field invalid, and announces a polite Japanese summary.
be-trustworthy
trustworthy-input-assistance
issueshighThe contact probe showed blank autocomplete values for name and email fields.
F18 low: Contact fields omit autocomplete assistance.
be-trustworthy
safe-commercial-and-account-flows
not-applicablehighNo checkout, subscription, authentication or account-management flow exists in the representative public scope.
be-sustainable
optimised-assets
issueshighThe image audit found 18 oversized images and 51 images without srcset; 1280px sources render at about 174px.
F19 high: Thumbnails are substantially oversized for their rendered slots.
be-sustainable
no-wasteful-work
issueshighThe HAR captured 105 non-main-origin requests and multiple parser/async ad integrations during initial navigation.
F20 medium: Nonessential ad and analytics work starts during the critical load.
be-sustainable
third-party-and-media-budget
issueshighThe homepage loads 62 fonts, 15 third-party origins and 4.44 MB attributed outside the main origin definition.
F21 high: Third-party fonts and advertising are disproportionate to content value.
be-agent-ready
structured-agent-capabilities
not-applicablehighThis public reading catalog exposes no agent-facing transactional capability; emerging WebMCP integration is not an expected requirement.
be-agent-ready
on-device-inference
not-applicablehighNo summarisation or generative task is part of the site’s core reading and catalog navigation experience.
be-memory-efficient
no-leak-under-repeated-interaction
passhighAfter ten repeated full-page scroll cycles, retained heap grew about 291 KB (roughly 1%) with no unbounded trend signal.
be-memory-efficient
bounded-footprint
passhighHeap summary was about 29 MB and 216k nodes including browser/native objects, proportionate to a media-heavy document.
be-memory-efficient
no-detached-dom-or-unbounded-listeners
passhighHeap top constructors showed no Detached DOM population; synthetic resize/scroll left DOM count and JS heap unchanged.

Provenance

Canonical report: results/atomic/reports/0184-momon-ga_com.json
Report SHA-256: 66abac3fe68dfbc3dc4cb4c7f22c882012b8a9d31b059aa7dd26ec9630e158fc
Local retained report: runs/2026-07-17T17-27-24-856Z/atomic-reports/momon-ga_com/2026-07-19T00-13-36-443Z/report.json
Local evidence root: runs/2026-07-17T17-27-24-856Z/atomic-reports/momon-ga_com/2026-07-19T00-13-36-443Z
Catalog SHA-256: sha256:78ccfdb2d483f4c57d9dafed80fd86c6265585a56457c8dcfddc254b80fb44d7

Raw screenshots, HARs, traces, heaps, and other browser artifacts are retained at the local evidence root and intentionally are not committed. Artifact paths in the canonical report are relative to that root.