Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js	86400.0 s	1.2 MiB
www.pubpub.org/static/landing/headerbg.png	86400.0 s	378.2 KiB
www.pubpub.org/static/landing/gafs.png	86400.0 s	278.7 KiB
www.pubpub.org/static/landing/importing.png	86400.0 s	276.6 KiB
www.pubpub.org/dist/main.b5bf41f155d1784ec954.js	86400.0 s	270.6 KiB
www.pubpub.org/static/landing/arch.png	86400.0 s	213.6 KiB
www.pubpub.org/static/landing/authoring.png	86400.0 s	134.8 KiB
www.pubpub.org/static/landing/serc.png	86400.0 s	122.5 KiB
www.pubpub.org/static/landing/multimedia.png	86400.0 s	111.5 KiB
www.pubpub.org/dist/main.94539bdef5da7a49dfd9.css	86400.0 s	82.8 KiB
www.pubpub.org/static/landing/collective.png	86400.0 s	74.1 KiB
www.pubpub.org/static/landing/pgej.png	86400.0 s	69.0 KiB
www.pubpub.org/static/landing/frankenbook.png	86400.0 s	46.4 KiB
www.pubpub.org/static/landing/contours.png	86400.0 s	44.3 KiB
www.pubpub.org/static/landing/hdsr.png	86400.0 s	32.2 KiB
www.pubpub.org/static/landing/createbg.png	86400.0 s	31.5 KiB
www.pubpub.org/static/landing/fermentology.png	86400.0 s	23.7 KiB
www.pubpub.org/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?	14400.0 s	12.3 KiB
www.pubpub.org/static/kfMini.svg	86400.0 s	5.8 KiB
www.pubpub.org/static/logoBlack.svg	86400.0 s	3.5 KiB
www.pubpub.org/static/logo.png	86400.0 s	2.8 KiB
www.pubpub.org/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js	2875.0 s	767 B
/v3/polyfill.min.js?features=default,fetch,HTMLCanvasElem...	604800.0 s	355 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:71.054 source:map[type:text value:[unattributed]]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
Logo of Grad Journal of Food Studies `div.community-grid > div.community > a > img.logo`	www.pubpub.org/static/landing/gafs.png	278.3 KiB	276.4 KiB
Screenshot of the PubPub import interface uploading a complex LaTeX document. `div#features > div.container > div > img`	www.pubpub.org/static/landing/importing.png	276.1 KiB	240.3 KiB
Logo of MIT Press Open Architecture `div.community-grid > div.community > a > img.logo`	www.pubpub.org/static/landing/arch.png	213.2 KiB	211.4 KiB
Logo of SERC Ethical Computing `div.community-grid > div.community > a > img.logo`	www.pubpub.org/static/landing/serc.png	122.2 KiB	120.4 KiB
Screenshot of a PubPub editor interface with multiple users editing at the same… `div#features > div.container > div > img`	www.pubpub.org/static/landing/authoring.png	134.6 KiB	102.9 KiB
Examples of rich content embedded in Pubs, including an equation, a stem and tr… `div#features > div.container > div > img`	www.pubpub.org/static/landing/multimedia.png	111.2 KiB	82.6 KiB
Logo of Collective Wisdom `div.community-grid > div.community > a > img.logo`	www.pubpub.org/static/landing/collective.png	73.9 KiB	72.0 KiB
Logo of Critical Distance `div.community-grid > div.community > a > img.logo`	www.pubpub.org/static/landing/pgej.png	68.8 KiB	66.9 KiB
Logo of Frankenbook `div.community-grid > div.community > a > img.logo`	www.pubpub.org/static/landing/frankenbook.png	46.2 KiB	44.3 KiB
Logo of Contours Collaborations `div.community-grid > div.community > a > img.logo`	www.pubpub.org/static/landing/contours.png	44.2 KiB	42.3 KiB
Logo of Harvard Data Science Review `div.community-grid > div.community > a > img.logo`	www.pubpub.org/static/landing/hdsr.png	32.0 KiB	30.1 KiB
Logo of Fermentology `div.community-grid > div.community > a > img.logo`	www.pubpub.org/static/landing/fermentology.png	23.6 KiB	22.4 KiB
div#main-content > div#landing-container > div#jumbotron > ::before `div#main-content > div#landing-container > div#jumbotron > ::before`	www.pubpub.org/static/landing/headerbg.png	377.7 KiB	21.3 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-13-DIV

nodeLabel: PubPub The open-source, community-led, end-to-end publishing platform for know…

path: 1,HTML,1,BODY,1,DIV,0,DIV,4,DIV,0,DIV,1,DIV

selector: div#app > div#main-content > div#landing-container > div#jumbotron

snippet: <div id="jumbotron">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
assets.pubpub.org/_fonts/8da286c6/fonts.css	236.7 KiB	438 ms
www.pubpub.org/dist/main.94539bdef5da7a49dfd9.css	82.8 KiB	160 ms

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 253 ms

URL	Time Spent
pubpub.org/	253 ms
www.pubpub.org/	0.0 ms

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 40 ms 26.0 KiB

URL	Transfer Size	Est Savings
assets.pubpub.org/_fonts/8da286c6/fonts.css	236.7 KiB	18.8 KiB
www.pubpub.org/dist/main.94539bdef5da7a49dfd9.css	82.8 KiB	7.2 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 250 ms 316.6 KiB

URL	Transfer Size	Est Savings
assets.pubpub.org/_fonts/8da286c6/fonts.css	236.2 KiB	236.2 KiB
www.pubpub.org/dist/main.94539bdef5da7a49dfd9.css	82.6 KiB	80.4 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 730 ms 937.9 KiB

URL	Transfer Size	Est Savings
www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js	1.2 MiB	727.8 KiB
www.pubpub.org/dist/main.b5bf41f155d1784ec954.js	270.4 KiB	210.1 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js	1.2 MiB
www.pubpub.org/static/landing/headerbg.png	378.2 KiB
www.pubpub.org/static/landing/gafs.png	278.7 KiB
www.pubpub.org/static/landing/importing.png	276.6 KiB
www.pubpub.org/dist/main.b5bf41f155d1784ec954.js	270.6 KiB
assets.pubpub.org/_fonts/8da286c6/fonts.css	236.7 KiB
www.pubpub.org/static/landing/arch.png	213.6 KiB
www.pubpub.org/static/landing/authoring.png	134.8 KiB
www.pubpub.org/static/landing/serc.png	122.5 KiB
www.pubpub.org/static/landing/multimedia.png	111.5 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
Knowledge Futures logo `div.footer-component > div.built-on > a > img.logo`	www.pubpub.org/static/kfMini.svg
div.col-12 > div.logo-wrapper > a > img `div.col-12 > div.logo-wrapper > a > img`	www.pubpub.org/static/logo.png

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits

●Optimize DOM size

●Font display

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify JavaScript

●JavaScript execution time 0.3 s

●Minimizes main-thread work 0.6 s

●Avoid long main-thread tasks 2 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 20 ms

●Server Backend Latencies 40 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 200 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

○User Timing marks and measures

○Avoid non-composited animations

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Names and labels

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
form > div.bp3-input-group > span.bp3-input-action > button.bp3-button `form > div.bp3-input-group > span.bp3-input-action > button.bp3-button`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Image elements have `[alt]` attributes

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Skip links are focusable.

●Deprecated ARIA roles were not used

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
SharedStorage	www.pubpub.org/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.	www.pubpub.org/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge	www.pubpub.org/cdn-cgi/challenge-platform/scripts/jsd/main.js

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source Description

Source	Description
www.pubpub.org/dist/main.b5bf41f155d1784ec954.js	Error: Unknown analytics provider: default at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:656282 at Generator.next (<anonymous>) at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:655819 at new Promise (<anonymous>) at de (https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:655639) at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:655969 at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:656403 at Generator.next (<anonymous>) at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:655819 at new Promise (<anonymous>) at de (https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:655639) at pe (https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:655841) at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:657171 at is (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:83208) at ml (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:102287) at t.unstable_runWithPriority (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:545:3844) at Ui (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:45023) at pl (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:102046) at Js (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:93595) at https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:45314 at t.unstable_runWithPriority (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:545:3844) at Ui (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:45023) at Ni (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:45259) at Di (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:45194) at tl (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:94044) at Ul (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:113112) at t.hydrate (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:116012) at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:1176924 at Module.<anonymous> (https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:1177025) at l (https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:944) at a (https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:813) at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:2782 at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:2786

www.pubpub.org/dist/main.b5bf41f155d1784ec954.js

Error: Unknown analytics provider: default
    at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:656282
    at Generator.next (<anonymous>)
    at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:655819
    at new Promise (<anonymous>)
    at de (https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:655639)
    at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:655969
    at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:656403
    at Generator.next (<anonymous>)
    at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:655819
    at new Promise (<anonymous>)
    at de (https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:655639)
    at pe (https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:655841)
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    at is (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:83208)
    at ml (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:102287)
    at t.unstable_runWithPriority (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:545:3844)
    at Ui (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:45023)
    at pl (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:102046)
    at Js (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:93595)
    at https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:45314
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    at Ui (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:45023)
    at Ni (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:45259)
    at Di (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:45194)
    at tl (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:94044)
    at Ul (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:113112)
    at t.hydrate (https://www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js:537:116012)
    at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:1176924
    at Module.<anonymous> (https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:1177025)
    at l (https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:944)
    at a (https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:813)
    at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:2782
    at https://www.pubpub.org/dist/main.b5bf41f155d1784ec954.js:1:2786

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Map URL
www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js	www.pubpub.org/dist/vendor.53f35129c103d920c9ce.bundle.js.map
www.pubpub.org/dist/main.b5bf41f155d1784ec954.js	www.pubpub.org/dist/main.b5bf41f155d1784ec954.js.map

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

100

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`