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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

35

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.

RequestCache TTLTransfer Size
/d8/s3fs-public/styles/500x660/s3/2026-04/solar-field-chi...0.0 ms87.2 KiB
/d8/s3fs-public/styles/463x330/s3/2021-05/dorothea-oldani...0.0 ms46.7 KiB
/d8/s3fs-public/styles/463x330/s3/2021-03/50733261678_a8e...0.0 ms33.6 KiB
engage.wri.org/app.js3600.0 s35.3 KiB
/d8/s3fs-public/styles/463x285/s3/2026-04/shenzhen-talent...0.0 ms21.9 KiB
matomo.wri.org/matomo.js0.0 ms21.9 KiB
/d8/s3fs-public/styles/240x220/s3/2021-04/water-flooding-...0.0 ms19.1 KiB
/d8/s3fs-public/styles/240x220/s3/2025-02/cycle-rickshaw-...0.0 ms16.8 KiB
/d8/s3fs-public/styles/240x220/s3/2021-02/_AJL1272(1)(1)(...0.0 ms16.6 KiB
/d8/s3fs-public/styles/240x220/s3/2021-04/food-floating-m...0.0 ms13.9 KiB
/d8/s3fs-public/styles/240x220/s3/2023-05/children-biking...0.0 ms13.8 KiB
/d8/s3fs-public/styles/240x220/s3/2021-04/climate-floodin...0.0 ms12.0 KiB
scripts.clarity.ms/0.8.60-beta/clarity.js86400.0 s25.0 KiB
www.wri.org/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?14400.0 s11.5 KiB
/d8/s3fs-public/styles/240x220/s3/2026-02/ocean-wind-turb...0.0 ms4.9 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s10.7 KiB
/3.31.0/modern/plugins/rsa-plugins-legacyEncryptionUtils....3600.0 s5.2 KiB
cdn.rudderlabs.com/3.31.0/modern/plugins/rsa-plugins-RetryQueue.min.js3600.0 s3.7 KiB
cdn.rudderlabs.com/3.31.0/modern/plugins/rsa-plugins-common.min.js3600.0 s3.6 KiB
cdn.rudderlabs.com/3.31.0/modern/plugins/rsa-plugins-remote-XhrQueue.min.js3600.0 s1.6 KiB
cdn.rudderlabs.com/3.31.0/modern/plugins/rsa-plugins-remote-GoogleLinker.min.js3600.0 s1.1 KiB
static.addtoany.com/menu/page.js86400.0 s2.2 KiB
/3.31.0/modern/plugins/rsa-plugins-remote-StorageMigrator...3600.0 s1.1 KiB
/3.31.0/modern/plugins/rsa-plugins-remote-ExternalAnonymo...3600.0 s1.0 KiB
cdn.rudderlabs.com/3.31.0/modern/plugins/rsa-plugins.js3600.0 s998 B
/-/settings/custom-fonts.css?family=Acumin+Pro&k=d29ybGRy...0.0 ms675 B
/3.31.0/modern/plugins/rsa-plugins-remote-StorageEncrypti...3600.0 s738 B
/p.css?s=1&k=xrt8xkt&ht=tk&f=8482.8483.8484.8485.26053.26...604800.0 s172 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.

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-0-IMG
nodeLabel: Workers clean solar panels in China
path: 1,HTML,1,BODY,8,MAIN,0,DIV,0,DIV,4,DIV,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,2,DIV,0,ARTICLE,0,DIV,0,PICTURE,5,IMG
selector: article.media > div.field > picture > img
snippet: <img loading="lazy" width="500" height="375" src="https://files.wri.org/d8/s3fs-public/styles/500x660/s3/2026-04/solar-field…" alt="Workers clean solar panels in China">

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
value: no origins were preconnected
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

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.

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.

URLResource SizeEst Savings
Workers clean solar panels in China article.media > div.field > picture > img
/d8/s3fs-public/styles/500x660/s3/2026-04/solar-field-chi...86.7 KiB33.0 KiB
early in the morning in the best light in Havana div.project_detail > div.ds-1col > div.card-image > img.image-style-_63x330
/d8/s3fs-public/styles/463x330/s3/2021-05/dorothea-oldani...46.3 KiB30.2 KiB
Fork in the road div.project_detail > div.ds-1col > div.card-image > img.image-style-_63x330
/d8/s3fs-public/styles/463x330/s3/2021-03/50733261678_a8e...33.1 KiB17.1 KiB
water-flooding-city-india div.layout__region > div.program-center-wrapper > div.views-row > img.image-style-_40x220
/d8/s3fs-public/styles/240x220/s3/2021-04/water-flooding-...18.7 KiB14.0 KiB
Cycle rickshaw walking in Keoladeo Ghana National Park in Bharatpur, India div.layout__region > div.program-center-wrapper > div.views-row > img.image-style-_40x220
/d8/s3fs-public/styles/240x220/s3/2025-02/cycle-rickshaw-...16.3 KiB11.6 KiB
Two scientists examine forest health in Indian cropland div.layout__region > div.program-center-wrapper > div.views-row > img.image-style-_40x220
/d8/s3fs-public/styles/240x220/s3/2021-02/_AJL1272(1)(1)(...16.2 KiB11.4 KiB
food-floating-market div.layout__region > div.program-center-wrapper > div.views-row > img.image-style-_40x220
/d8/s3fs-public/styles/240x220/s3/2021-04/food-floating-m...13.4 KiB8.7 KiB
Children biking in line on streets of Calle Colombia. div.layout__region > div.program-center-wrapper > div.views-row > img.image-style-_40x220
/d8/s3fs-public/styles/240x220/s3/2023-05/children-biking...13.4 KiB8.6 KiB
climate-flooding-city-bike div.layout__region > div.program-center-wrapper > div.views-row > img.image-style-_40x220
/d8/s3fs-public/styles/240x220/s3/2021-04/climate-floodin...11.6 KiB6.9 KiB

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: 811 ms
URLTime Spent
wri.org/811 ms
www.wri.org/0.0 ms

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

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.

Diagnostics

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: 900 ms 87.6 KiB
URLTransfer SizeEst Savings
/sites/default/files/css/css_H68TGhtCAZYmEbxEmyIzP90v3IW-...97.4 KiB87.6 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.

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation2.6 s
Other589 ms
Style & Layout512 ms
Script Parsing & Compilation306 ms
Garbage Collection111 ms
Parse HTML & CSS81 ms
Rendering53 ms

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
Home div.region > div#block-ts-wrin-branding > a.site-logo > img.logo-color
www.wri.org/sites/default/files/nav_logo_color_0.svg
Home div.region > div.hamburger-header > a.site-logo > img.logo-white
www.wri.org/sites/default/files/nav_logo_white_0.svg
Home div.footer-padding > div.footer-logo > a > img.logo-white
www.wri.org/sites/default/files/nav_logo_white_0.svg

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

Layout shift culprits
Optimize DOM size
Forced reflow
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
Minify JavaScript
Avoids enormous network payloads Total size was 2,100 KiB
User Timing marks and measures 5 user timings
Avoid long main-thread tasks 18 long tasks found
Avoid non-composited animations 2 animated elements found
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 120 ms
Server Backend Latencies 90 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 40 ms
INP breakdown
Avoid large layout shifts
99

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.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Iran War Could Worsen Middle East’s Water Woes div.field__item > div.node > div.field > h3

These are opportunities to improve keyboard navigation in your application.

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
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Buttons have an accessible name
Image elements have `[alt]` attributes
Input buttons have discernible text.
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
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
`[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.
Document has a main landmark.
Deprecated ARIA roles were not used
Identical links have the same purpose.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
`[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 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.
Skip links are focusable.
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.
Elements with visible text labels have matching accessible names.
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.
77

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLAspect Ratio (Displayed)Aspect Ratio (Actual)
Workers clean solar panels in China article.media > div.field > picture > img
/d8/s3fs-public/styles/500x660/s3/2026-04/solar-field-chi...500 x 375 (1.33)500 x 660 (0.76)

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 / WarningSource
SharedStorage
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
Fledge

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.

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
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
No browser errors logged to the console
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 DOM-based XSS with Trusted Types
Detected JavaScript libraries
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
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`

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