楽天レシピ

https://recipe.rakuten.co.jp/?scid=homescreen
楽天が運営する料理レシピの検索サイト。141万件以上のレシピを気になる食材や料理から探せます!人気順の並び替えは何と【無料】!さらに料理を投稿すると楽天ポイントが貰えます。
Added 4 months ago, Updated 10 hours ago

LIGHTHOUSE 64

Lighthouse version2.5.0
Progressive Web App64
Registers a service workertrue
Responds with a 200 when offlinetrue
Contains some content when JavaScript is not availabletrue
Uses HTTPStrue
Redirects HTTP traffic to HTTPStrue
Page load is not fast enough on 3Gnull
User will not be prompted to Install the Web Appfalse
Is not configured for a custom splash screenfalse
Address bar does not match 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 paint3
First Interactive (beta)null
Consistently Interactive (beta)null
Perceptual Speed Index12
Estimated Input Latency0
Reduce render-blocking stylesheets100
Reduce render-blocking scripts100
Properly size images0
Offscreen imagesnull
Optimize images65
Serve images as WebP0
Enable text compression90
Keep server response times low (TTFB)true
Has enormous network payloads95
Avoids an excessive DOM size100
Critical Request Chainsfalse
User Timing marks and measurestrue
Screenshot Thumbnails100
Accessibility80
`[accesskey]` values are unique.true
`[aria-*]` attributes match their roles.true
`[role]`s have all required `[aria-*]` attributes.true
Elements with `[role]` that require specific children `[role]`s, are present.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 do not have a sufficient contrast ratio.false
`<dl>`'s do not contain only properly-ordered `<dt>` and `<dd>` groups, `<script>` or `<template>` elements.false
Definition list items are wrapped in `<dl>` elements.true
Document has a `<title>` element.true
`[id]` attributes on the page are unique.true
`<frame>` or `<iframe>` elements do not have a title.false
`<html>` element has a `[lang]` attribute.true
`<html>` element has a valid value for its `[lang]` attribute.true
Image elements do not have `[alt]` attributes.false
`<input type="image">` elements have `[alt]` text.true
Form elements do not have associated labels.false
Presentational `<table>` elements avoid using `<th>`, `<caption>` or the `[summary]` attribute.true
Links do not 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 used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is 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 Practices69
Avoids Application Cachetrue
Avoids WebSQL DBtrue
Uses HTTPStrue
Does not use HTTP/2 for all of its resourcesfalse
Does not use passive listeners to improve scrolling performancefalse
Avoids Mutation Events in its own scriptstrue
Uses `document.write()`false
Does not open external anchors using `rel="noopener"`false
Avoids requesting the geolocation permission on page loadtrue
Avoids front-end JavaScript libraries with known security vulnerabilitiestrue
Avoids requesting the notification permission on page loadtrue
Avoids deprecated APIstrue
Manifest's `short_name` won't be truncated when displayed on homescreentrue
Allows users to paste into password fieldstrue
No browser errors logged to the consoletrue
Does not uses Images with appropriate aspect ratio9

WebPageTest

PageSpeed Insights

MANIFEST

{
  "gcm_sender_id": "103953800507",
  "lang": "ja",
  "name": "楽天レシピ",
  "short_name": "楽天レシピ",
  "icons": [
    {
      "src": "//image.recipe.rakuten.co.jp/d-pc/logo/addtohomescreen_icon.png",
      "sizes": "144x144",
      "type": "image/png"
    },
    {
      "src": "//image.recipe.rakuten.co.jp/d-pc/logo/addtohomescreen_icon_192.png",
      "sizes": "192x192",
      "type": "image/png"
    }
  ],
  "background_color": "#ffffff",
  "theme_color": "#fa6946",
  "start_url": "/?scid=homescreen",
  "display": "standalone",
  "prefer_related_applications": true,
  "related_applications": [
    {
      "platform": "play",
      "id": "jp.co.rakuten.recipe"
    }
  ]
}