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Accessibility

· 24 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.
SCORE
83
GRADE
B
FIX
4
REVIEW
2
PASS
18
INFO
0
Checks
24
18 PASS 2 REVIEW 4 FIX
D
Tabindex Anti-Patterns
Action
0 positive, 10 -1-on-focusable
FIX
0 positive, 10 -1-on-focusable
Info::
tabindex="-1" on naturally-focusable <a>
tabindex="-1" removes an element from the keyboard tab order. Naturally-focusable elements (links, buttons, form controls) become unreachable for keyboard users. (Common false-positive: hidden honeypot fields. Verify the element is genuinely interactive before removing the tabindex.)
Info::
tabindex="-1" on naturally-focusable <a>
tabindex="-1" removes an element from the keyboard tab order. Naturally-focusable elements (links, buttons, form controls) become unreachable for keyboard users. (Common false-positive: hidden honeypot fields. Verify the element is genuinely interactive before removing the tabindex.)
Info::
tabindex="-1" on naturally-focusable <a>
tabindex="-1" removes an element from the keyboard tab order. Naturally-focusable elements (links, buttons, form controls) become unreachable for keyboard users. (Common false-positive: hidden honeypot fields. Verify the element is genuinely interactive before removing the tabindex.)
Info::
tabindex="-1" on naturally-focusable <a>
tabindex="-1" removes an element from the keyboard tab order. Naturally-focusable elements (links, buttons, form controls) become unreachable for keyboard users. (Common false-positive: hidden honeypot fields. Verify the element is genuinely interactive before removing the tabindex.)
Info::
tabindex="-1" on naturally-focusable <a>
tabindex="-1" removes an element from the keyboard tab order. Naturally-focusable elements (links, buttons, form controls) become unreachable for keyboard users. (Common false-positive: hidden honeypot fields. Verify the element is genuinely interactive before removing the tabindex.)
Info::
tabindex="-1" on naturally-focusable <a>
tabindex="-1" removes an element from the keyboard tab order. Naturally-focusable elements (links, buttons, form controls) become unreachable for keyboard users. (Common false-positive: hidden honeypot fields. Verify the element is genuinely interactive before removing the tabindex.)
Info::
tabindex="-1" on naturally-focusable <a>
tabindex="-1" removes an element from the keyboard tab order. Naturally-focusable elements (links, buttons, form controls) become unreachable for keyboard users. (Common false-positive: hidden honeypot fields. Verify the element is genuinely interactive before removing the tabindex.)
Info::
tabindex="-1" on naturally-focusable <a>
tabindex="-1" removes an element from the keyboard tab order. Naturally-focusable elements (links, buttons, form controls) become unreachable for keyboard users. (Common false-positive: hidden honeypot fields. Verify the element is genuinely interactive before removing the tabindex.)
Info::
tabindex="-1" on naturally-focusable <a>
tabindex="-1" removes an element from the keyboard tab order. Naturally-focusable elements (links, buttons, form controls) become unreachable for keyboard users. (Common false-positive: hidden honeypot fields. Verify the element is genuinely interactive before removing the tabindex.)
Info::
tabindex="-1" on naturally-focusable <a>
tabindex="-1" removes an element from the keyboard tab order. Naturally-focusable elements (links, buttons, form controls) become unreachable for keyboard users. (Common false-positive: hidden honeypot fields. Verify the element is genuinely interactive before removing the tabindex.)
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
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 ✗
F
Navigation UX
Action
No navigation patterns
FIX
No navigation patterns
Info::
3 navigation landmark(s) detected
Info::
No breadcrumbs, search, or skip link detected
These navigation aids help users orient themselves and find content efficiently, especially on large sites.
Breadcrumbs
Search
Skip Link
Labeled Navigation 3 <nav> element(s)
Back to Top
Hamburger Menu
Sticky Navigation Cannot reliably detect (CSS-based)
1 of 6 testable patterns navigation patterns detected. Limited navigation support. Consider adding breadcrumbs, search, and skip link.
C
Favicon & Branding
Action
4 icon(s) detected
REVIEW
4 icon(s) detected
Info::
favicon.ico present at site root
Info::
HTML icon links detected
Info::
Apple touch icon present
Info::
SVG favicon detected — scales perfectly to any size
✓ favicon.ico Present
✓ PNG Icons Present
✓ Apple Touch Present
✓ SVG Favicon Present
✗ Manifest Icons Missing
✗ Multiple Sizes Missing
B
Dark Mode Support
Dark mode detected
REVIEW
Dark mode detected
Info::
Dark-specific theme-color detected
A theme-color with media='(prefers-color-scheme: dark)' adapts the browser toolbar for dark mode.
Info::
prefers-color-scheme CSS detected in inline styles
Info::
Detection limited to meta tags and inline styles
External CSS files may contain prefers-color-scheme rules not visible to this scan.
Dark Mode✓ Dark Mode Supported
color-scheme meta Not set ✗Dark theme-color #ffffff ✓CSS indicators Detected ✓

Detection limited to meta tags and inline styles.

A
Landmark Structure
7 landmarks
PASS
7 landmarks
Info::
<main> landmark present
Info::
3 <nav> landmark(s) found
Info::
All <nav> elements are properly labeled
Warning::
Skip navigation link is missing (WCAG 2.4.1)
Add a skip link as the first focusable element so keyboard users can bypass repeated navigation.
Page Structure — as a screen reader sees it
BANNER header NAV "主导航" MAIN ASIDE "侧栏" CONTENTINFO footer

Add a skip link as the first focusable element so keyboard users can bypass repeated navigation.

Why this matters

Without a skip-nav link, keyboard users tab through every nav item before reaching content — every page, every visit.

Learn more ▾

WCAG 2.4.1 (Bypass Blocks) requires a mechanism to skip past repeated content. The standard implementation is a 'Skip to main content' link that's the first focusable element, visually hidden until focused. Three lines of HTML + four of CSS.

Source: WCAG 2.1 SC 2.4.1

A+
Heading Hierarchy
14 headings
PASS
14 headings
Info::
Single H1 present
  • H1 最新文章
  • H2 浏览器只开一个网页就卡？用任务管理器查 CPU 占用
  • H2 网络测速很快，为什么上网还是慢？
  • H2 Windows Emacs 远程连接卡住？TRAMP 分步排查
  • H2 OpenClash 一启动就断？先确认 OOM，再查规则加载
  • H2 小火箭订阅导入 Surge 失败？先分清格式和协议
  • H2 Telegram 只导近期聊天：日期设置与 HTML、JSON 怎么选
  • H2 去开屏广告插件失效怎么查：iPhone 上 MitM 证书、插件与 QUIC 逐项排查
  • H2 挂香港 IP 能开港卡、港美股账户吗？2026 年内地居民开户规则和正规路径
  • H2 香港节点用 ChatGPT、Claude、Gemini 老出错？看报错分清地区限制和风控
  • H2 Quantumult X 下架了吗？欧盟区搜不到时，已购还能不能重新下载
  • H2 分类
  • H2 最近更新
  • H2 热门标签
A
Heading Text Quality
2 heading-text-quality issue(s) detected
PASS
2 heading-text-quality issue(s) detected
Info::
1 heading(s) are too short (≤2 characters) to convey meaning
Headings with 2 or fewer characters are almost always emoji / typos / alignment hacks rather than real headings. Screen readers announce the heading level ("heading 2") and then read the content -- a single-character heading conveys no information. Affected: - H2: "分类"
Got: 1 ≤2-char heading(s)
Info::
6 heading(s) are all-uppercase (excluding short acronyms)
Headings rendered in all-uppercase are a styling choice that should be done via CSS (`text-transform: uppercase`), not by typing the text in caps. Capitalized text is read letter-by-letter by some screen readers (e.g., "H-E-L-L-O W-O-R-L-D" instead of "hello world"). It's also a soft signal of CMS-migration artifacts where the original lowercase intent was lost.
Got: 6 all-caps heading(s)
A+
Alt Text Quality
All 10 images OK
PASS
All 10 images OK
Info::
10 image(s) with good alt text
10 images 10 good alt text
All images have appropriate alt text.
A+
Form Accessibility
All 1 controls labeled
PASS
All 1 controls labeled
Info::
1 control(s) properly labeled
1 controls
1 labeled
0 placeholder only
0 unlabeled
ControlTypeLabelMethod
#nz-search-1search搜索文章for/id
A+
Form Input Types
1 form control(s) checked, no type mismatches
PASS
1 form control(s) checked, no type mismatches
Info::
No input-type mismatches detected
A+
Form Input Quality
1 form control(s) checked, no input-semantic issues
PASS
1 form control(s) checked, no input-semantic issues
Info::
All form input semantics look correct
A+
Mobile Keyboard & Autofill
No autofill-eligible form controls
PASS
No autofill-eligible form controls
Info::
No autofill-eligible form controls (no name/email/tel/address fields)
A+
Document Language
Lang attribute set to "zh-Hans"
PASS
Lang attribute set to "zh-Hans"
Info::
<html lang="zh-Hans"> is set and valid
Got: zh-Hans
A+
Iframe Accessibility
No iframes on this page
PASS
No iframes on this page
Info::
No iframes on this page
A+
Tap Target Adequacy
All tap targets meet WCAG 2.5.5/2.5.8 sizing
PASS
All tap targets meet WCAG 2.5.5/2.5.8 sizing
Info::
All tap targets meet WCAG 2.5.5 (44x44px) sizing
A+
Mobile-Readable Font Sizes
All 81 visible text node(s) render at >= 12 CSS pixels
PASS
All 81 visible text node(s) render at >= 12 CSS pixels
Info::
All text uses legible mobile font sizes (>= 12 CSS px)
A
404 Error Page
HTTP 404, custom page
PASS
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
Info::
Homepage link present on 404 page
Info::
Search form present on 404 page
404 Page Quality ✓ Custom 404 Page
Status Code HTTP 404 ✓Page Title 未找到页面 - 网知 ✓Custom Styling ✓Navigation ✓Homepage Link ✓Search Form ✓
A+
PWA Depth
No PWA depth issues detected
PASS
No PWA depth issues detected
Info::
No PWA depth issues detected
A+
Mobile UX Depth
1 mobile-depth signal(s) detected
PASS
1 mobile-depth signal(s) detected
Info::
Browser-chrome `theme-color` meta tag present
The page sets `<meta name="theme-color" content="...">`, which Android Chrome uses to tint the status bar and iOS Safari uses for the toolbar background. Brand polish that costs nothing and Just Works.
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
h1 最新文章19.40:13.0:1
#000000
#F4F6F9
Pass
h2 分类19.40:13.0:1
#000000
#F4F6F9
Pass
h2 最近更新19.40:13.0:1
#000000
#F4F6F9
Pass
h2 热门标签19.40:13.0:1
#000000
#F4F6F9
Pass
title 网知 - 网络工…21.00:14.5:1
#000000
#FFFFFF
Pass
a 跳到正文21.00:14.5:1
#000000
#FFFFFF
Pass
span 网知19.40:14.5:1
#000000
#F4F6F9
Pass
a 首页19.40:14.5:1
#000000
#F4F6F9
Pass
a 网络工具19.40:14.5:1
#000000
#F4F6F9
Pass
a 软件与数码19.40:14.5:1
#000000
#F4F6F9
Pass
a 出海教程19.40:14.5:1
#000000
#F4F6F9
Pass
label 搜索文章19.40:14.5:1
#000000
#F4F6F9
Pass
button 搜索19.40:14.5:1
#000000
#F4F6F9
Pass
a 浏览器只开一…19.40:14.5:1
#000000
#F4F6F9
Pass
p 浏览器只开一…19.40:14.5:1
#000000
#F4F6F9
Pass
a 软件与数码19.40:14.5:1
#000000
#F4F6F9
Pass
time 2026-11-0819.40:14.5:1
#000000
#F4F6F9
Pass
a 网络测速很快…19.40:14.5:1
#000000
#F4F6F9
Pass
p 测速很快，实…19.40:14.5:1
#000000
#F4F6F9
Pass
a 网络工具19.40:14.5:1
#000000
#F4F6F9
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 100/100 — 0 failing, 21 passed
PASS
100

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.

○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>`
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●`[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
●`[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
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Skip links are focusable.
●Document has a main landmark.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○Deprecated ARIA roles were not used
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○`[role]`s have all required `[aria-*]` attributes
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○`[role]` values are valid
○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
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Image elements have `[alt]` attributes
○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.
○No element has a `[tabindex]` value greater than 0
○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.
○Uses ARIA roles only on compatible elements
○Image elements do not have `[alt]` attributes that are redundant text.
○Identical links have the same purpose.
○Elements with visible text labels have matching accessible names.
○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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