Install F1 App

https://www.formula1.com/
Formula 1®
Added 3 months ago, Updated 17 minutes ago

LIGHTHOUSE 45

Lighthouse version2.1.0
Progressive Web App45
Registers a Service Workerfalse
Responds with a 200 when offlinefalse
Contains some content when JavaScript is not availabletrue
Uses HTTPStrue
Redirects HTTP traffic to HTTPStrue
Page load is fast enough on 3Gnull
User can be prompted to Install the Web Appfalse
Configured for a custom splash screenfalse
Address bar matches brand colorsfalse
Has a `<meta name="viewport">` tag with `width` or `initial-scale`true
Content is sized correctly for the viewporttrue
Site works cross-browserfalse
Page transitions don't feel like they block on the networkfalse
Each page has a URLfalse
Performance2
First meaningful paint5
First Interactive (beta)null
Consistently Interactive (beta)null
Perceptual Speed Index2
Estimated Input Latency0
Reduce render-blocking stylesheets0
Reduce render-blocking scripts0
Properly size images0
Offscreen imagesnull
Optimize images0
Serve images as WebP0
Enable text compression65
Avoids enormous network payloads61
Avoids an excessive DOM size61
Critical Request Chainsfalse
User Timing marks and measurestrue
Screenshot Thumbnails100
Accessibility86
`[accesskey]` values are unique.true
`[aria-*]` attributes match their roles.true
`[role]`s have all required `[aria-*]` attributes.true
`[role]`s that require child `[role]`s contain them.true
`[role]`s are contained by their required parent element.true
`[role]` values are valid.true
`[aria-*]` attributes have valid values.true
`[aria-*]` attributes are valid and not misspelled.true
`<audio>` elements contain a `<track>` element with `[kind="captions"]`.true
Buttons have an accessible name.true
The page contains a heading, skip link, or landmark region.true
Background and foreground colors have a sufficient contrast ratio.false
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>` or <template> elements.true
Definition list items are wrapped in `<dl>` elements.true
Document has a `<title>` element.true
`[id]` attributes on the page are unique.false
`<frame>` or `<iframe>` elements have a title.false
`<html>` element has a `[lang]` attribute.true
`<html>` element has a valid value for its `[lang]` attribute.true
Image elements have `[alt]` attributes.true
`<input type="image">` elements have `[alt]` text.true
Form elements have associated labels.true
Presentational `<table>` elements avoid using `<th>`, `<caption>` or the `[summary]` attribute.true
Links have a discernable name.false
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).true
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements.true
The document does not use `<meta http-equiv="refresh">`.true
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.false
`<object>` elements have `[alt]` text.true
No element has a `[tabindex]` value greater than 0.true
Cells in a `<table>` element that use the `[headers]` attribute only refer to other cells of that same table.true
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.true
`[lang]` attributes have a valid value.true
`<video>` elements contain a `<track>` element with `[kind="captions"]`.true
`<video>` elements contain a `<track>` element with `[kind="description"]`.true
Best Practices54
Avoids Application Cachetrue
Avoids WebSQL DBtrue
Uses HTTPStrue
Uses HTTP/2 for its own resourcesfalse
Uses passive listeners to improve scrolling performancefalse
Avoids Mutation Events in its own scriptsnull
Avoids `document.write()`false
Opens external anchors using `rel="noopener"`false
Avoids requesting the geolocation permission on page loadtrue
Avoids requesting the notification permission on page loadtrue
Avoids deprecated APIstrue
Manifest's `short_name` won't be truncated when displayed on homescreenfalse
Allows to paste into password input fieldstrue

WebPageTest

PageSpeed Insights

MANIFEST

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  "name": "Install F1 App",
  "short_name": "Install F1 App",
  "icons": [
    {
      "src": "/etc/designs/fom-website/icon36x36.png",
      "sizes": "36x36",
      "type": "image/png"
    },
    {
      "src": "/etc/designs/fom-website/icon48x48.png",
      "sizes": "48x48",
      "type": "image/png"
    },
    {
      "src": "/etc/designs/fom-website/icon72x72.png",
      "sizes": "72x72",
      "type": "image/png"
    },
    {
      "src": "/etc/designs/fom-website/icon96x96.png",
      "sizes": "96x96",
      "type": "image/png"
    },
    {
      "src": "/etc/designs/fom-website/icon144x144.png",
      "sizes": "144x144",
      "type": "image/png"
    },
    {
      "src": "/etc/designs/fom-website/icon192x192.png",
      "sizes": "192x192",
      "type": "image/png"
    }
  ],
  "prefer_related_applications": true,
  "related_applications": [
    {
      "platform": "play",
      "id": "com.softpauer.f1timingapp2014.basic"
    }
  ],
  "start_url": "/",
  "display": "standalone"
}