PWA Directory:

LIGHTHOUSE 55

Details

Lighthouse version	2.3.0

Progressive Web App	55
Registers a Service Worker	true
Does not respond with a 200 when offline	false
Contains some content when JavaScript is not available	true
Uses HTTPS	true
Redirects HTTP traffic to HTTPS	true
Page load is not fast enough on 3G	false
User will not be prompted to Install the Web App	false
Is not configured for a custom splash screen	false
Address bar does not match brand colors	false
Has a `<meta name="viewport">` tag with `width` or `initial-scale`	true
Content is sized correctly for the viewport	true
Site works cross-browser	false
Page transitions don't feel like they block on the network	false
Each page has a URL	false

Performance	33
First meaningful paint	54
First Interactive (beta)	22
Consistently Interactive (beta)	22
Perceptual Speed Index	64
Estimated Input Latency	0
Reduce render-blocking stylesheets	0
Reduce render-blocking scripts	0
Properly size images	100
Offscreen images	0
Optimize images	100
Serve images as WebP	0
Enable text compression	90
Has enormous network payloads	22
Avoids an excessive DOM size	100
Critical Request Chains	false
User Timing marks and measures	true
Screenshot Thumbnails	100

Accessibility	77
`[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 do not have an accessible name.	false
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 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 not unique.	false
`<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 not contained within `<ul>` or `<ol>` parent elements.	false
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.	true
`<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 Practices	69
Avoids Application Cache	true
Avoids WebSQL DB	true
Uses HTTPS	true
Uses HTTP/2 for its own resources	true
Uses passive listeners to improve scrolling performance	true
Avoids Mutation Events in its own scripts	true
Uses `document.write()`	false
Does not open external anchors using `rel="noopener"`	false
Avoids requesting the geolocation permission on page load	true
Requests the notification permission on page load	false
Avoids deprecated APIs	true
Manifest's `short_name` will be truncated when displayed on homescreen	false
Allows users to paste into password fields	true

WebPageTest

PageSpeed Insights

MANIFEST

{
  "display": "standalone",
  "gcm_sender_id": "103953800507",
  "gcm_user_visible_only": true
}

meduza.io

LIGHTHOUSE 55

WebPageTest

PageSpeed Insights

MANIFEST