PWA Directory:

LIGHTHOUSE 55

Details

Lighthouse version	2.2.1

Progressive Web App	55
Registers a Service Worker	true
Responds 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 fast enough on 3G	null
User can be prompted to Install the Web App	false
Configured for a custom splash screen	false
Address bar has been themed	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	13
First meaningful paint	41
First Interactive (beta)	null
Consistently Interactive (beta)	null
Perceptual Speed Index	22
Estimated Input Latency	0
Reduce render-blocking stylesheets	0
Reduce render-blocking scripts	0
Properly size images	100
Offscreen images	null
Optimize images	100
Serve images as WebP	0
Enable text compression	90
Avoids enormous network payloads	85
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
`[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.	false
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.	false
`<input type="image">` elements have `[alt]` text.	true
Form elements have associated labels.	false
Presentational `<table>` elements avoid using `<th>`, `<caption>` or the `[summary]` attribute.	true
Links have a discernible 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.	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
Avoids `document.write()`	false
Opens external anchors using `rel="noopener"`	false
Avoids requesting the geolocation permission on page load	true
Avoids requesting the notification permission on page load	false
Avoids deprecated APIs	true
Manifest's `short_name` won't be truncated when displayed on homescreen	false
Allows to paste into password input 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