404-page
無料Use when reviewing templates, rendered HTML, or shared components related to Create a custom 404 error page. Validate the final browser-facing markup, not just the source framework abstraction.
日本語の概要は準備中です。原文の説明を表示しています。
Use when reviewing an HTTPS page for resources (scripts, images, stylesheets, iframes) that are loaded over plain HTTP.
インストールする前に、エージェントに与えられる指示の中身を確認できます。
Active mixed content (scripts loaded over HTTP into an HTTPS page) gives network attackers the ability to execute arbitrary JavaScript on your page — the same power as XSS, despite the page itself being served over HTTPS.
upgrade-insecure-requests CSP directive to automatically upgrade HTTP sub-resources to HTTPShttp:// URLs in HTML, CSS, and JavaScriptContent-Security-Policy: upgrade-insecure-requests directive is the most practical fix for legacy contentScan the page source and network requests for any HTTP resources loaded on an HTTPS page. Check <script src>, <img src>, <link href>, <iframe src>, and CSS url() values for http:// URLs. Also check the Content-Security-Policy header for the upgrade-insecure-requests directive.
Replace all http:// resource URLs with https:// equivalents. If the resource provider does not support HTTPS, host the resource yourself or find an alternative. Add Content-Security-Policy: upgrade-insecure-requests as a safety net for any remaining HTTP URLs.
Explain the difference between active and passive mixed content, why active mixed content is blocked by browsers, and how the upgrade-insecure-requests CSP directive works.
Review server config, headers, forms, and integration points related to Avoid mixed content on HTTPS pages. Flag exact responses, cookies, or browser behaviors that violate the rule, and verify them against the effective production-like response.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/security/mixed-content
まだレビューはありません。使ってみた感想をお寄せください。
概要と使いどころ
Use when reviewing templates, rendered HTML, or shared components related to Create a custom 404 error page. Validate the final browser-facing markup, not just the source framework abstraction.
日本語の概要は準備中です。原文の説明を表示しています。
Use when auditing metadata, crawlability, structured data, or indexability related to Create a dedicated About page. Verify the rendered HTML and HTTP response rather than relying only on source files.
日本語の概要は準備中です。原文の説明を表示しています。
Use when reviewing component libraries, page flows, or CI pipelines that need repeatable accessibility checks. Automated testing is strongest at catching structural and attribute-level issues; it does not replace keyboard, screen reader, and manual UX testing.
日本語の概要は準備中です。原文の説明を表示しています。
Use when reviewing sign-in, sign-up, MFA, CAPTCHA, recovery, and re-auth flows. Evaluate the full authentication path, including error handling and backup methods, not just the primary login form.
日本語の概要は準備中です。原文の説明を表示しています。
Use when reviewing templates, rendered HTML, or shared components related to Make notifications accessible. Validate the final browser-facing markup, not just the source framework abstraction.
日本語の概要は準備中です。原文の説明を表示しています。
Use when reviewing rendered HTML, interactive components, or design-system patterns related to Use semantic table markup for screen readers. Check native semantics first, then inspect keyboard behavior, focus flow, accessible names, and screen-reader output where relevant.
日本語の概要は準備中です。原文の説明を表示しています。