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Accessibility

· 13 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.
SCORE
58
GRADE
D
FIX
5
REVIEW
4
PASS
4
INFO
0
Checks
13
4 PASS 4 REVIEW 5 FIX
F
Favicon & Branding
Action
1 icon(s) detected
FIX
1 icon(s) detected
Info::
favicon.ico present at site root
Info::
No apple-touch-icon detected
iOS devices use this when users add your site to their home screen. Add <link rel='apple-touch-icon' sizes='180x180' href='/apple-touch-icon.png'>.
✓ favicon.ico Present
✗ PNG Icons Missing
✗ Apple Touch Missing
✗ SVG Favicon Missing
✗ Manifest Icons Missing
✗ Multiple Sizes Missing
D
Web Manifest
Action
Not found
FIX
Not found
Info::
No web manifest found
No manifest at standard paths (/manifest.json, /site.webmanifest). A manifest is optional but enables PWA features like home screen installation and standalone display.

No web manifest found.

D
Dark Mode Support
Action
No dark mode signals
FIX
No dark mode signals
Info::
No dark mode signals detected
Consider adding CSS with @media (prefers-color-scheme: dark) and <meta name='color-scheme' content='light dark'>.
Info::
Detection limited to meta tags and inline styles
External CSS files may contain prefers-color-scheme rules not visible to this scan.
Dark ModeNo Dark Mode Detected
color-scheme meta Not set ✗Dark theme-color Not set ✗CSS indicators Not detected ✗

Detection limited to meta tags and inline styles.

D
Print Stylesheet
Action
No print styles
FIX
No print styles
Info::
No print-specific styles detected
When users print this page, they get the screen layout including navigation and non-essential elements. Add @media print rules to hide navigation and optimize layout for paper.
Print Stylesheet No Print Styles
Print stylesheet Not found ✗Inline @media print Not detected ✗
C
Landmark Structure
Action
5 landmarks
REVIEW
5 landmarks
Critical::
No <main> landmark found
Screen reader users cannot quickly navigate to the primary content. Wrap your main content in <main>.
Info::
3 <nav> landmark(s) found
Warning::
2 of 3 <nav> elements are unlabeled
Multiple navigations need aria-label to distinguish them for screen readers.
Info::
No contentinfo (footer) landmark
Info::
Skip navigation link present
Info::
Search landmark present
Page Structure — as a screen reader sees it
BANNER header NAV SEARCH MAIN (missing!) CONTENTINFO (missing!)

Screen reader users cannot quickly navigate to the primary content. Wrap your main content in <main>.

Why this matters

Without a <main> landmark, screen-reader users can't skip past the navigation to the page content — every page starts with re-reading the menu.

Learn more ▾

The <main> element marks the page's primary content area. Assistive tech offers a 'jump to main' shortcut — but only if <main> exists. Without it, every page navigation forces re-reading the header. Wrap your primary content in a single <main>.

Source: WAI-ARIA / WCAG 2.4.1

Multiple navigations need aria-label to distinguish them for screen readers.

Why this matters

Some <nav> elements lack aria-label — screen-reader users hear 'navigation' multiple times with no way to distinguish them.

Learn more ▾

When a page has multiple <nav> regions (primary, footer, breadcrumb), each needs aria-label or aria-labelledby. AT users navigate by landmark; identical 'navigation' announcements force them to enter each one to discover purpose.

Source: WAI-ARIA Authoring Practices

B
Heading Hierarchy
88 headings
REVIEW
88 headings
Critical::
No H1 heading found
Every page should have one H1 that describes the page content.
  • H2 DLSS 4.5 現已推出
  • H2 NVIDIA 與 Emerald AI 攜手加速「電力靈活型」AI 部署
  • H2 觀看 NVIDIA 執行長黃仁勳主題演講
  • H2 透過 NVIDIA OpenShell，從設計源頭強化自主代理的安全防護
  • H2 NVIDIA Vera Rubin 為自主化 AI 開啟全新扉頁
  • H2 使用 NVIDIA NemoClaw 即時安全的執行自行演化的智慧代理
  • H2 NVIDIA GTC 主題演講重播
  • H3 人工智慧和資料科學
  • H3 透過 NVIDIA OpenShell，從設計源頭強化自主代理的安全防護
  • H3 NVIDIA 為代理與物理 AI 擴展開放式模型發展
  • H3 全新開放式物理 AI 資料 Factory Blueprint
  • H3 在 NVIDIA DGX Spark 與 Station 上，運用 OpenShell 打造你的專屬應用
  • H3 NVIDIA Dynamo 1.0 AI 工廠作業系統已獲廣泛採用
  • H3 Adobe 與 NVIDIA 宣布策略性合作
  • H3 AI 是一座五層蛋糕
  • H3 NVIDIA 發表適用於代理 AI 之 Nemotron 3 模型系列
  • H3 RTX AI Garage：NVIDIA 利用本地加速代理開啟人工智慧新時代
  • H3 設計和模擬
  • H3 將設計、工程與製造帶向 AI 時代
  • H3 Dassault Systèmes 與 NVIDIA 攜手打造次世代工業 AI 平台
  • H3 Amazon Devices & Services 運用 NVIDIA 技術實現零接觸製造流程
  • H3 NVIDIA AI 工廠數位孿生：全新生態系統與工具
  • H3 NVIDIA Blackwell RTX PRO 可適用於各式工作站與伺服器
  • H3 NVIDIA 將推出實體人工智慧開放資料集，公開最大規模的合成資料集，推動實體人工智慧的開發
  • H3 NVIDIA Omniverse 將隨著實體人工智慧的採用浪潮，擴大生態系統
  • H3 NVIDIA 推出 fVDB ，以打造全球更大的數位模型
  • H3 NVIDIA 結合數位孿生與即時人工智慧，實現工業自動化
  • H3 利用 Autodesk Maya 的 OpenUSD 增強功能簡化 3D 工作流程
  • H3 高效能運算
  • H3 NVIDIA Blackwell 加快電腦輔助工程軟體的執行速度
  • H3 Earth-2 宣布新的 NIM
  • H3 使用 NVIDIA ALCHEMI 徹底改變 AI 驅動的材料發現
  • H3 透過 CUDA-Q 平台加速全球量子運算中心
  • H3 NVIDIA AI 代工服務
  • H3 宣布全新的加速量子經典運算系統
  • H3 HPC 適用的 NVIDIA 框架
  • H3 解決邊緣端的 HPC 問題
  • H3 遊戲與創作
  • H3 NVIDIA DLSS 5 發布
  • H3 DLSS 4.5
  • H3 RTX. It's On.
  • H3 RTX Remix
  • H3 流暢度決定勝負
  • H3 GeForce RTX 50 系列顯示卡和桌上型電腦
  • H3 GeForce RTX 50 系列筆記型電腦
  • H3 2026 年 GDC 大會的熱議
  • H3 RTX AI Garage：NVIDIA 利用本地加速代理開啟人工智慧新時代
  • H3 汽車產業
  • H3 頂尖汽車製造商將 NVIDIA DRIVE Hyperion 應用於 L4 車輛
  • H3 賓士發表採用 NVIDIA DRIVE AV 技術打造的全新 S-Class
  • H3 現代汽車集團建構 NVIDIA Blackwell AI 工廠
  • H3 NVIDIA 推出全方位自動駕駛車輛安全系統 Halos
  • H3 DRIVE AI 系統偵測實驗室用以改善自駕車安全
  • H3 全球汽車合作夥伴展示人工智慧的未來
  • H3 NVIDIA 運用 Omniverse Cloud API 大幅提升自動化系統開發
  • H3 汽車製造商全新浪潮：採用 NVIDIA DRIVE 進行自動駕駛
  • H3 機器人和邊緣運算
  • H3 NVIDIA IGX Thor™ 現已上市
  • H3 NVIDIA IGX Thor 將 Blackwell 技術導入全新邊緣 AI 應用
  • H3 物理 AI 與人形機器人的終極平台
  • H3 Amazon Devices & Services 運用 NVIDIA 技術實現零接觸製造流程
  • H3 Hugging Face 和 NVIDIA 加速開源機器人 AI 的研究進展
  • H3 推動 AI 機器人的新一波浪潮
  • H3 使用 NVIDIA OSMO 擴充支援人工智慧機器人的開發工作負載
  • H3 J&J 將打造採用人工智慧的數位和機器人手術平台
  • H3 隆重介紹 Issac AMR
  • H3 資料中心與雲端運算
  • H3 NVIDIA 與 Emerald AI 驅動 AI 靈活部署，優化能源使用
  • H3 NVIDIA 發布 Vera CPU，專為代理 AI 精心打造
  • H3 儲存產業採用 NVIDIA BlueField®-4 STX
  • H3 NVIDIA RTX PRO™ 4500 Blackwell 伺服器版本隆重登場
  • H3 NVIDIA DSX Air 透過 AI 工廠模擬加快首次 Token 生成時間
  • H3 NVIDIA 開啟太空運算新紀元
  • H3 全新 NVIDIA Vera Rubin DSX AI 工廠參考設計
  • H3 NVIDIA 與 AWS 擴展完整堆疊合作夥伴關係
  • H3 全球電腦製造商將推出採用人工智慧的 DGX 個人系統
  • H3 介紹 NVIDIA DGX B300 系統
  • H3 關於 NVIDIA
  • H3 觀看 NVIDIA 執行長黃仁勳主題演講
  • H3 一切從這裡開始
  • H3 NVIDIA 執行長黃仁勳於 COMPUTEX 2025 發表主題演講
  • H3 人工智慧工廠
  • H3 黃仁勳與 Mark Zuckerberg 探討人工智慧的重大進展
  • H3 我們的故事
  • H3 永續發展之路：人工智慧和加速運算可提升能源效率
  • H3 可自行安排進度的人工智慧與資料科學職涯發展課程
  • H3 了解 NVIDIA 企業故事
  • H3 秉持變革創新的理念，勇闖未知領域

Every page should have one H1 that describes the page content.

Why this matters

No H1 means screen-reader users can't identify the page's primary topic, and Google's content-extraction degrades.

Learn more ▾

The H1 is the document title for assistive tech and a strong signal to search engines about page topic. Pages without one force screen readers to fall back to the <title> attribute or page chrome. Add a single H1 that names the page's primary subject.

Source: WCAG 2.4.6 / Google Search Central

B
404 Error Page
HTTP 404, custom page
REVIEW
HTTP 404, custom page
Info::
Correct 404 status code returned
Got: HTTP 404
Info::
Custom styled 404 page
Info::
Navigation links present on 404 page
404 Page Quality ✓ Custom 404 Page
Status Code HTTP 404 ✓Page Title Artificial Intelligence Computing Leadership from NVIDIA ✓Custom Styling ✓Navigation ✓Homepage Link ✗Search Form ✗
C
Navigation UX
Action
2 navigation pattern(s)
REVIEW
2 navigation pattern(s)
Info::
Search functionality detected
Got: role-search
Info::
Skip navigation link detected
Info::
3 navigation landmark(s) detected
Info::
Hamburger menu detected (responsive design)
Breadcrumbs
Search role='search' landmark
Skip Link Skip link detected
Labeled Navigation 3 <nav> element(s)
Back to Top
Hamburger Menu
Sticky Navigation Cannot reliably detect (CSS-based)
4 of 6 testable patterns navigation patterns detected. Strong navigation UX with multiple discovery paths.
A+
Alt Text Quality
All 81 images OK
PASS
All 81 images OK
Info::
7 decorative image(s) correctly marked
Info::
74 image(s) with good alt text
81 images 74 good alt text 7 decorative
All images have appropriate alt text.
A+
Form Accessibility
All 6 controls labeled
PASS
All 6 controls labeled
Info::
6 control(s) properly labeled
6 controls
6 labeled
0 placeholder only
0 unlabeled
ControlTypeLabelMethod
#country-selectorselectSelect your countryaria-label
#nv-level1-tab1radio產品for/id
#nv-level1-tab2radio解決方案for/id
#nv-level1-tab3radio各行各業for/id
#search-termstext搜尋aria-label
#search-terms-mobtextSearcharia-label
A+
Color Contrast (Screenshot)
20 text elements analyzed, 0 fail WCAG AA
PASS

Analyzes text contrast against the actual rendered page, including background images, gradients, and overlays that CSS-based tools cannot detect.

20 pass
Show all checked elements (20)
ElementRatioRequiredFGBGResult
h2 DLSS 4.5 現已推…5.03:13.0:1
#000000
#7C7C7C
Pass
h2 NVIDIA 與 Emerald A…5.03:13.0:1
#000000
#7C7C7C
Pass
h2 觀看 NVIDIA 執行…5.03:13.0:1
#000000
#7C7C7C
Pass
h2 透過 NVIDIA OpenSh…5.03:13.0:1
#000000
#7C7C7C
Pass
h2 NVIDIA Vera Rubin …5.03:13.0:1
#000000
#7C7C7C
Pass
h2 使用 NVIDIA NemoCl…5.03:13.0:1
#000000
#7C7C7C
Pass
h2 NVIDIA GTC 主題演…5.03:13.0:1
#000000
#7C7C7C
Pass
h3 人工智慧和資…5.03:13.0:1
#000000
#7C7C7C
Pass
h3 透過 NVIDIA OpenSh…5.03:13.0:1
#000000
#7C7C7C
Pass
h3 NVIDIA 為代理與…5.03:13.0:1
#000000
#7C7C7C
Pass
h3 全新開放式物…5.03:13.0:1
#000000
#7C7C7C
Pass
h3 在 NVIDIA DGX Spark…5.03:13.0:1
#000000
#7C7C7C
Pass
h3 NVIDIA Dynamo 1.0 AI…5.03:13.0:1
#000000
#7C7C7C
Pass
h3 Adobe 與 NVIDIA 宣…5.03:13.0:1
#000000
#7C7C7C
Pass
h3 AI 是一座五層…5.03:13.0:1
#000000
#7C7C7C
Pass
h3 NVIDIA 發表適用…5.03:13.0:1
#000000
#7C7C7C
Pass
h3 RTX AI Garage：NVID…5.03:13.0:1
#000000
#7C7C7C
Pass
h3 設計和模擬5.03:13.0:1
#000000
#7C7C7C
Pass
h3 將設計、工程…5.03:13.0:1
#000000
#7C7C7C
Pass
h3 Dassault Systèmes …5.03:13.0:1
#000000
#7C7C7C
Pass

Methodology: The top 20 text elements by font size were checked. Background color was sampled from the desktop screenshot using a 5-point pattern. WCAG 2.1 AA requires 4.5:1 for normal text and 3:1 for large text.

A+
Lighthouse Accessibility Audits
Score 95/100 — 2 failing, 29 passed
PASS
95

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
TW Sign In div.nav-header > div.nav-header-container > div.nav-tools-container > ul.nav-header-list

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
TW div.nav-tools-container > ul.nav-header-list > li#nv-cs-item-mob > a.nav-cs-link
○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]`s are contained by their required parent element
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●Links have a discernible name
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Image elements do not have `[alt]` attributes that are redundant text.
○Identical links have the same purpose.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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