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[Learn how to make ARIA dialog elements more accessible](https://dequeuniversity.com/rules/axe/4.11/aria-dialog-name).", "score": null, "scoreDisplayMode": "notApplicable" }, "aria-hidden-body": { "id": "aria-hidden-body", "title": "`[aria-hidden=\"true\"]` is not present on the document ``", "description": "Assistive technologies, like screen readers, work inconsistently when `aria-hidden=\"true\"` is set on the document ``. 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[Learn how to name `meter` elements](https://dequeuniversity.com/rules/axe/4.11/aria-meter-name).", "score": null, "scoreDisplayMode": "notApplicable" }, "aria-progressbar-name": { "id": "aria-progressbar-name", "title": "ARIA `progressbar` elements have accessible names", "description": "When a `progressbar` element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. [Learn how to label `progressbar` elements](https://dequeuniversity.com/rules/axe/4.11/aria-progressbar-name).", "score": null, "scoreDisplayMode": "notApplicable" }, "aria-prohibited-attr": { "id": "aria-prohibited-attr", "title": "Elements use only permitted ARIA attributes", "description": "Using ARIA attributes in roles where they are prohibited can mean that important information is not communicated to users of assistive technologies. 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[Learn more about toggle fields](https://dequeuniversity.com/rules/axe/4.11/aria-toggle-field-name).", "score": null, "scoreDisplayMode": "notApplicable" }, "aria-tooltip-name": { "id": "aria-tooltip-name", "title": "ARIA `tooltip` elements have accessible names", "description": "When a tooltip element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. [Learn how to name `tooltip` elements](https://dequeuniversity.com/rules/axe/4.11/aria-tooltip-name).", "score": null, "scoreDisplayMode": "notApplicable" }, "aria-treeitem-name": { "id": "aria-treeitem-name", "title": "ARIA `treeitem` elements have accessible names", "description": "When a `treeitem` element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. [Learn more about labeling `treeitem` elements](https://dequeuniversity.com/rules/axe/4.11/aria-treeitem-name).", "score": null, "scoreDisplayMode": "notApplicable" }, "aria-valid-attr": { "id": "aria-valid-attr", "title": "`[aria-*]` attributes are valid and not misspelled", "description": "Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid names. [Learn more about valid ARIA attributes](https://dequeuniversity.com/rules/axe/4.11/aria-valid-attr).", "score": null, "scoreDisplayMode": "notApplicable" }, "aria-valid-attr-value": { "id": "aria-valid-attr-value", "title": "`[aria-*]` attributes have valid values", "description": "Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid values. [Learn more about valid values for ARIA attributes](https://dequeuniversity.com/rules/axe/4.11/aria-valid-attr-value).", "score": null, "scoreDisplayMode": "notApplicable" }, "bootup-time": { "id": "bootup-time", "title": "JavaScript execution time", "description": "Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. [Learn how to reduce Javascript execution time](https://developer.chrome.com/docs/lighthouse/performance/bootup-time/).", "score": 1, "scoreDisplayMode": "metricSavings", "displayValue": "0.0 s", "details": { "headings": [ { "key": "url", "label": "URL", "valueType": "url" }, { "granularity": 1, "key": "total", "label": "Total CPU Time", "valueType": "ms" }, { "granularity": 1, "key": "scripting", "label": "Script Evaluation", "valueType": "ms" }, { "granularity": 1, "key": "scriptParseCompile", "label": "Script Parse", "valueType": "ms" } ], "items": [ { "scriptParseCompile": 0.24200000000000002, "scripting": 1.3819999999999995, "total": 77.11, "url": "https://blankisback.github.io/Applied-Programming-Assignment-2/" }, { "scriptParseCompile": 0, "scripting": 3.1169999999999995, "total": 70.22100000000007, "url": "Unattributable" } ], "sortedBy": [ "total" ], "summary": { "wastedMs": 4.740999999999999 }, "type": "table" }, "numericValue": 4.740999999999999, "numericUnit": "millisecond", "metricSavings": { "TBT": 0 }, "guidanceLevel": 1 }, "button-name": { "id": "button-name", "title": "Buttons have an accessible name", "description": "When a button doesn't have an accessible name, screen readers announce it as \"button\", making it unusable for users who rely on screen readers. [Learn how to make buttons more accessible](https://dequeuniversity.com/rules/axe/4.11/button-name).", "score": 1, "scoreDisplayMode": "binary", "details": { "headings": [ { "key": "node", "label": "Failing Elements", "subItemsHeading": { "key": "relatedNode", "valueType": "node" }, "valueType": "node" } ], "items": [], "type": "table" } }, "bypass": { "id": "bypass", "title": "The page contains a heading, skip link, or landmark region", "description": "Adding ways to bypass repetitive content lets keyboard users navigate the page more efficiently. [Learn more about bypass blocks](https://dequeuniversity.com/rules/axe/4.11/bypass).", "score": null, "scoreDisplayMode": "notApplicable" }, "cache-insight": { "id": "cache-insight", "title": "Use efficient cache lifetimes", "description": "A long cache lifetime can speed up repeat visits to your page. [Learn more about caching](https://developer.chrome.com/docs/performance/insights/cache).", "score": 0.5, "scoreDisplayMode": "metricSavings", "displayValue": "Est savings of 3 KiB", "details": { "debugData": { "type": "debugdata", "wastedBytes": 2717 }, "headings": [ { "key": "url", "label": "Request", "valueType": "url" }, { "displayUnit": "duration", "key": "cacheLifetimeMs", "label": "Cache TTL", "valueType": "ms" }, { "displayUnit": "kb", "granularity": 1, "key": "totalBytes", "label": "Transfer Size", "valueType": "bytes" } ], "items": [ { "cacheLifetimeMs": 600000, "totalBytes": 1645, "url": "https://blankisback.github.io/Applied-Programming-Assignment-2/script.js", "wastedBytes": 1507.9166666666665 }, { "cacheLifetimeMs": 600000, "totalBytes": 1319, "url": "https://blankisback.github.io/Applied-Programming-Assignment-2/styles.css", "wastedBytes": 1209.0833333333333 } ], "skipSumming": [ "cacheLifetimeMs" ], "sortedBy": [ "wastedBytes" ], "type": "table" }, "metricSavings": { "LCP": 0, "FCP": 0 }, "guidanceLevel": 3 }, "canonical": { "id": "canonical", "title": "Document has a valid `rel=canonical`", "description": "Canonical links suggest which URL to show in search results. [Learn more about canonical links](https://developer.chrome.com/docs/lighthouse/seo/canonical/).", "score": null, "scoreDisplayMode": "notApplicable" }, "charset": { "id": "charset", "title": "Properly defines charset", "description": "A character encoding declaration is required. It can be done with a `` tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header. [Learn more about declaring the character encoding](https://developer.chrome.com/docs/lighthouse/best-practices/charset/).", "score": 1, "scoreDisplayMode": "binary" }, "clickjacking-mitigation": { "id": "clickjacking-mitigation", "title": "Mitigate clickjacking with XFO or CSP", "description": "The `X-Frame-Options` (XFO) header or the `frame-ancestors` directive in the `Content-Security-Policy` (CSP) header control where a page can be embedded. These can mitigate clickjacking attacks by blocking some or all sites from embedding the page. [Learn more about mitigating clickjacking](https://developer.chrome.com/docs/lighthouse/best-practices/clickjacking-mitigation).", "score": 1, "scoreDisplayMode": "informative", "details": { "headings": [ { "key": "description", "label": "Description", "subItemsHeading": { "key": "description" }, "valueType": "text" }, { "key": "severity", "label": "Severity", "subItemsHeading": { "key": "severity" }, "valueType": "text" } ], "items": [ { "description": "No frame control policy found", "severity": "High" } ], "type": "table" } }, "cls-culprits-insight": { "id": "cls-culprits-insight", "title": "Layout shift culprits", "description": "Layout shifts occur when elements move absent any user interaction. [Investigate the causes of layout shifts](https://developer.chrome.com/docs/performance/insights/cls-culprit), such as elements being added, removed, or their fonts changing as the page loads.", "score": 0, "scoreDisplayMode": "numeric", "details": { "items": [ { "headings": [ { "key": "node", "label": "Element", "subItemsHeading": { "key": "extra" }, "valueType": "node" }, { "granularity": 0.001, "key": "score", "label": "Layout shift score", "subItemsHeading": { "key": "cause", "valueType": "text" }, "valueType": "numeric" } ], "items": [ { "node": { "type": "text", "value": "Total" }, "score": 0.39868700000000007 }, { "node": { "boundingRect": { "bottom": 1037, "height": 464, "left": 0, "right": 1335, "top": 573, "width": 1335 }, "lhId": "page-38-SECTION", "nodeLabel": "Action\nBatman Begins\n\n2005\n\nThe Batman\n\n2022\n\nBatman v Superman: Dawn of Justic…", "path": "1,HTML,1,BODY,2,SECTION", "selector": "body > section", "snippet": "

", "type": "node" }, "score": 0.293756, "subItems": { "items": [ { "cause": "Unsized image element", "extra": { "boundingRect": { "bottom": 420, "height": 222, "left": 20, "right": 170, "top": 198, "width": 150 }, "lhId": "page-3-IMG", "nodeLabel": "div#trending > div.movie > div.movie-card > img", "path": "1,HTML,1,BODY,1,SECTION,1,DIV,0,DIV,0,DIV,0,IMG", "selector": "div#trending > div.movie > div.movie-card > img", "snippet": "

", "type": "node" } } ], "type": "subitems" } }, { "node": { "boundingRect": { "bottom": 1037, "height": 464, "left": 0, "right": 1335, "top": 573, "width": 1335 }, "lhId": "page-38-SECTION", "nodeLabel": "Action\nBatman Begins\n\n2005\n\nThe Batman\n\n2022\n\nBatman v Superman: Dawn of Justic…", "path": "1,HTML,1,BODY,2,SECTION", "selector": "body > section", "snippet": "

", "type": "node" }, "score": 0.067075, "subItems": { "items": [ { "cause": "Unsized image element", "extra": { "boundingRect": { "bottom": 418, "height": 221, "left": 845, "right": 995, "top": 198, "width": 150 }, "lhId": "page-8-IMG", "nodeLabel": "div#trending > div.movie > div.movie-card > img", "path": "1,HTML,1,BODY,1,SECTION,1,DIV,5,DIV,0,DIV,0,IMG", "selector": "div#trending > div.movie > div.movie-card > img", "snippet": "

", "type": "node" } } ], "type": "subitems" } }, { "node": { "boundingRect": { "bottom": 1522, "height": 485, "left": 0, "right": 1335, "top": 1037, "width": 1335 }, "lhId": "page-40-SECTION", "nodeLabel": "Comedy\nThe King of Comedy\n\n1982\n\nA Midsummer Night's Sex Comedy\n\n1982\n\nThe Bugs…", "path": "1,HTML,1,BODY,3,SECTION", "selector": "body > section", "snippet": "

", "type": "node" }, "score": 0.02677, "subItems": { "items": [ { "cause": "Unsized image element", "extra": { "boundingRect": { "bottom": 402, "height": 205, "left": 1175, "right": 1325, "top": 198, "width": 150 }, "lhId": "page-37-IMG", "nodeLabel": "div#trending > div.movie > div.movie-card > img", "path": "1,HTML,1,BODY,1,SECTION,1,DIV,7,DIV,0,DIV,0,IMG", "selector": "div#trending > div.movie > div.movie-card > img", "snippet": "

", "type": "node" } } ], "type": "subitems" } }, { "node": { "boundingRect": { "bottom": 520, "height": 75, "left": 350, "right": 500, "top": 445, "width": 150 }, "lhId": "page-49-DIV", "nodeLabel": "Avengers: Infinity War\n\n2018", "path": "1,HTML,1,BODY,1,SECTION,1,DIV,2,DIV,0,DIV,1,DIV", "selector": "div#trending > div.movie > div.movie-card > div.movie-overlay", "snippet": "

", "type": "node" }, "score": 0.004464, "subItems": { "items": [ { "cause": "Unsized image element", "extra": { "boundingRect": { "bottom": 420, "height": 222, "left": 350, "right": 500, "top": 198, "width": 150 }, "lhId": "page-2-IMG", "nodeLabel": "div#trending > div.movie > div.movie-card > img", "path": "1,HTML,1,BODY,1,SECTION,1,DIV,2,DIV,0,DIV,0,IMG", "selector": "div#trending > div.movie > div.movie-card > img", "snippet": "

", "type": "node" } } ], "type": "subitems" } }, { "node": { "boundingRect": { "bottom": 498, "height": 75, "left": 1010, "right": 1160, "top": 423, "width": 150 }, "lhId": "page-51-DIV", "nodeLabel": "Ultimate Avengers: The Movie\n\n2006", "path": "1,HTML,1,BODY,1,SECTION,1,DIV,6,DIV,0,DIV,1,DIV", "selector": "div#trending > div.movie > div.movie-card > div.movie-overlay", "snippet": "

", "type": "node" }, "score": 0.002498, "subItems": { "items": [ { "cause": "Unsized image element", "extra": { "boundingRect": { "bottom": 398, "height": 200, "left": 1010, "right": 1160, "top": 198, "width": 150 }, "lhId": "page-23-IMG", "nodeLabel": "div#trending > div.movie > div.movie-card > img", "path": "1,HTML,1,BODY,1,SECTION,1,DIV,6,DIV,0,DIV,0,IMG", "selector": "div#trending > div.movie > div.movie-card > img", "snippet": "

", "type": "node" } } ], "type": "subitems" } } ], "type": "table" } ], "type": "list" }, "metricSavings": { "CLS": 0 }, "guidanceLevel": 3 }, "color-contrast": { "id": "color-contrast", "title": "Background and foreground colors have a sufficient contrast ratio", "description": "Low-contrast text is difficult or impossible for many users to read. [Learn how to provide sufficient color contrast](https://dequeuniversity.com/rules/axe/4.11/color-contrast).", "score": 1, "scoreDisplayMode": "binary", "details": { "headings": [ { "key": "node", "label": "Failing Elements", "subItemsHeading": { "key": "relatedNode", "valueType": "node" }, "valueType": "node" } ], "items": [], "type": "table" } }, "crawlable-anchors": { "id": "crawlable-anchors", "title": "Links are crawlable", "description": "Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. [Learn how to make links crawlable](https://support.google.com/webmasters/answer/9112205)", "score": 1, "scoreDisplayMode": "binary", "details": { "headings": [ { "key": "node", "label": "Uncrawlable Link", "valueType": "node" } ], "items": [], "type": "table" } }, "csp-xss": { "id": "csp-xss", "title": "Ensure CSP is effective against XSS attacks", "description": "A strong Content Security Policy (CSP) significantly reduces the risk of cross-site scripting (XSS) attacks. [Learn how to use a CSP to prevent XSS](https://developer.chrome.com/docs/lighthouse/best-practices/csp-xss/)", "score": 1, "scoreDisplayMode": "informative", "details": { "headings": [ { "key": "description", "label": "Description", "subItemsHeading": { "key": "description" }, "valueType": "text" }, { "key": "directive", "label": "Directive", "subItemsHeading": { "key": "directive" }, "valueType": "code" }, { "key": "severity", "label": "Severity", "subItemsHeading": { "key": "severity" }, "valueType": "text" } ], "items": [ { "description": "No CSP found in enforcement mode", "severity": "High" } ], "type": "table" } }, "cumulative-layout-shift": { "id": "cumulative-layout-shift", "title": "Cumulative Layout Shift", "description": "Cumulative Layout Shift measures the movement of visible elements within the viewport. [Learn more about the Cumulative Layout Shift metric](https://web.dev/articles/cls).", "score": 0.25, "scoreDisplayMode": "numeric", "displayValue": "0.399", "details": { "items": [ { "cumulativeLayoutShiftMainFrame": 0.39868700000000007, "newEngineResult": { "cumulativeLayoutShift": 0.39868700000000007, "cumulativeLayoutShiftMainFrame": 0.39868700000000007 }, "newEngineResultDiffered": false } ], "type": "debugdata" }, "numericValue": 0.39868700000000007, "numericUnit": "unitless", "scoringOptions": { "p10": 0.1, "median": 0.25 } }, "custom-controls-labels": { "id": "custom-controls-labels", "title": "Custom controls have associated labels", "description": "Custom interactive controls have associated labels, provided by aria-label or aria-labelledby. [Learn more about custom controls and labels](https://developer.chrome.com/docs/lighthouse/accessibility/custom-controls-labels/).", "score": null, "scoreDisplayMode": "manual" }, "custom-controls-roles": { "id": "custom-controls-roles", "title": "Custom controls have ARIA roles", "description": "Custom interactive controls have appropriate ARIA roles. [Learn how to add roles to custom controls](https://developer.chrome.com/docs/lighthouse/accessibility/custom-control-roles/).", "score": null, "scoreDisplayMode": "manual" }, "definition-list": { "id": "definition-list", "title": "`

` and `: ` groups, `