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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.

44

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
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
/signals/config/1949494258686877?v=2.9.303&r=stable&domai...1200.0 s44.4 KiB
tags.rferl.org/rferl-pangea/prod/utag.js300.0 s34.9 KiB
tags.rferl.org/rferl-pangea/prod/utag.72.js?utv=ut4.52.202502251745300.0 s24.4 KiB
tags.rferl.org/rferl-pangea/prod/utag.4.js?utv=ut4.52.201802231859300.0 s17.2 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
scripts.clarity.ms/0.8.60-beta/clarity.js86400.0 s25.0 KiB
static.chartbeat.com/js/chartbeat_video.js86400.0 s24.8 KiB
cdn.onesignal.com/sdks/web/v16/OneSignalSDK.page.es6.js?v=160603259200.0 s42.1 KiB
static.chartbeat.com/js/chartbeat_mab.js86400.0 s10.1 KiB
tags.rferl.org/rferl-pangea/prod/utag.24.js?utv=ut4.52.202212081948300.0 s4.0 KiB
/Scripts/responsive/loader.b?v=-DFswp_EC2uZw3Oxn_v-cVTLIN...1425838.0 s21.3 KiB
api.onesignal.com/sync/dcba9732-9d59-46ec-aea0-e487e980e249/web?callback=__jp03600.0 s2.5 KiB
tags.rferl.org/rferl-pangea/prod/utag.73.js?utv=ut4.52.202408091939300.0 s1.9 KiB
tags.rferl.org/rferl-pangea/prod/utag.sync.js300.0 s1.4 KiB
tags.rferl.org/rferl-pangea/prod/utag.53.js?utv=ut4.52.202307101453300.0 s1.3 KiB
tags.rferl.org/rferl-pangea/prod/utag.7.js?utv=ut4.52.201802231859300.0 s1.1 KiB
/rferl-pangea/prod/utag.v.js?a=bbg/rferl-pangea/202502251...300.0 s508 B
/Scripts/responsive/infographics.b?v=dVbZ-Cza7s4UoO3BqYSZ...1425839.0 s2.0 KiB
cdn.onesignal.com/sdks/web/v16/OneSignalSDK.page.js259200.0 s899 B
sb.scorecardresearch.com/internal-c2/default/cs.js86400.0 s376 B
www.rferl.org/Scripts/responsive/serviceWorkerInstall.js?cb=3811425839.0 s1.2 KiB
www.rferl.org/conf.js?x=3811425839.0 s1.1 KiB
script.crazyegg.com/pages/scripts/0026/0255.js86400.0 s231 B
/tr/?id=1949494258686877&ev=PageView&dl=https%3A%2F%2Fwww...0.0 ms18 B
/pangeavideo/2026/04/7/76/769c00d0-6aba-4c2c-d7ab-08de3c9...27365.0 s0 B
/pangeavideo/2026/04/3/39/39786077-a148-458d-1b64-08de3be...10273.0 s0 B
/pangeavideo/2026/04/1/1e/1ea297f1-5006-4aab-3c8e-08de3be...19628.0 s0 B
/pangeavideo/2026/04/4/49/4910072a-48d4-4720-d6c5-08de3c9...19628.0 s0 B
/pangeavideo/2026/04/7/76/769c00d0-6aba-4c2c-d7ab-08de3c9...27365.0 s0 B
/pangeavideo/2026/04/9/95/950da4ca-6d52-4918-5c31-08de3c9...28775.0 s0 B
/pangeavideo/2026/04/8/8e/8e7b7dd6-ad77-4a5a-0360-08de3c6...38272.0 s0 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.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
www.rferl.org/Content/responsive/fonts/SkolarSansLatnCyrlCn-Rg.woff235 ms
www.rferl.org/Content/responsive/fonts/SkolarSans-Cn-Bd_LatnCyrl_v2.3.woff30 ms
www.rferl.org/Content/responsive/fonts/icons-font-1770298840587.woff30 ms

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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:3.608 source:map[column:7137 line:14 type:source-location url:https://www.rferl.org/Scripts/responsive/loader.b?v=-DFswp_EC2uZw3Oxn_v-cVTLINi_j28CeKgxsXcFnDw1?&av=0.0.0.0&cb=381 urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:30.964 source:map[type:text value:[unattributed]]] map[reflowTime:1.064 source:map[column:7443 line:13 type:source-location url:https://www.rferl.org/Scripts/responsive/loader.b?v=-DFswp_EC2uZw3Oxn_v-cVTLINi_j28CeKgxsXcFnDw1?&av=0.0.0.0&cb=381 urlProvider:network]] map[reflowTime:2.17 source:map[column:7684 line:13 type:source-location url:https://www.rferl.org/Scripts/responsive/loader.b?v=-DFswp_EC2uZw3Oxn_v-cVTLINi_j28CeKgxsXcFnDw1?&av=0.0.0.0&cb=381 urlProvider:network]] map[reflowTime:0.374 source:map[column:5406 line:13 type:source-location url:https://www.rferl.org/Scripts/responsive/loader.b?v=-DFswp_EC2uZw3Oxn_v-cVTLINi_j28CeKgxsXcFnDw1?&av=0.0.0.0&cb=381 urlProvider:network]]]

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: US President Donald Trump has unilaterally extended a cease-fire to give Iran a…
path: 1,HTML,1,BODY,10,DIV,0,DIV,5,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,UL,0,LI,0,DIV,0,A,0,DIV,1,IMG
selector: div.media-block > a.img-wrap > div.thumb > img.enhanced
snippet: <img data-src="https://gdb.rferl.org/e597b915-3025-48df-8ad8-dffd785a739d_w250_r1.jpg" src="https://gdb.rferl.org/e597b915-3025-48df-8ad8-dffd785a739d_w408_r1.jpg" alt="US President Donald Trump has unilaterally extended a cease-fire to give I…" class=" enhanced" height="16" width="16">

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.

URLTransfer SizeDuration
tags.rferl.org/rferl-pangea/prod/utag.sync.js1.4 KiB756 ms
/Scripts/responsive/loader.b?v=-DFswp_EC2uZw3Oxn_v-cVTLIN...21.3 KiB300 ms
/Scripts/responsive/infographics.b?v=dVbZ-Cza7s4UoO3BqYSZ...2.0 KiB
www.rferl.org/Content/responsive/RFE/en-US/RFE-en-US.css?&av=0.0.0.0&cb=38151.0 KiB450 ms

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
div.media-block > a.img-wrap > div.thumb > video.video div.media-block > a.img-wrap > div.thumb > video.video
gdb.rferl.org/1ea297f1-5006-4aab-3c8e-08de3be37656_tv_w250_r1.jpg10.4 KiB4.6 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: 838 ms
URLTime Spent
rferl.org/838 ms
www.rferl.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: 920 ms 46.0 KiB
URLTransfer SizeEst Savings
www.rferl.org/Content/responsive/RFE/en-US/RFE-en-US.css?&av=0.0.0.0&cb=38150.4 KiB46.0 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: 2.2 s 482.9 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtm.js?id=GTM-WXZBPZ168.2 KiB94.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-WXZBPZ168.2 KiB66.6 KiB
www.googletagmanager.com/gtag/js?id=G-LV8YK5RW5X&cx=c&gtm=4e64h1155.9 KiB66.1 KiB
www.googletagmanager.com/gtag/js?id=G-M4LGVTBXXT&cx=c&gtm=4e64h1150.6 KiB65.5 KiB
www.googletagmanager.com/gtag/js?id=G-5DHYJEC3NX&cx=c&gtm=4e64h1155.9 KiB64.5 KiB
www.googletagmanager.com/gtag/js?id=G-6JFTX91ZER&cx=c&gtm=4e64h1150.2 KiB63.8 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB33.8 KiB
cdn.onesignal.com/sdks/web/v16/OneSignalSDK.page.es6.js?v=16060341.6 KiB28.2 KiB

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.

URLTotal CPU TimeScript EvaluationScript Parse
www.googletagmanager.com/gtm.js?id=GTM-WXZBPZ819 ms596 ms191 ms
Unattributable615 ms41 ms0.0 ms
static.chartbeat.com/js/chartbeat_video.js559 ms475 ms21 ms
www.rferl.org/498 ms17 ms8.0 ms
tags.rferl.org/rferl-pangea/prod/utag.js330 ms256 ms9.3 ms
www.googletagmanager.com/gtag/js?id=G-LV8YK5RW5X&cx=c&gtm=4e64h1274 ms196 ms31 ms
www.googletagmanager.com/gtag/js?id=G-5DHYJEC3NX&cx=c&gtm=4e64h1237 ms202 ms34 ms
www.googletagmanager.com/gtag/js?id=G-6JFTX91ZER&cx=c&gtm=4e64h1229 ms189 ms38 ms
www.googletagmanager.com/gtag/js?id=G-M4LGVTBXXT&cx=c&gtm=4e64h1199 ms166 ms31 ms
scripts.clarity.ms/0.8.60-beta/clarity.js184 ms165 ms6.4 ms
/res?callback=_resourceLoaderReceiver_0&x=381&dependencie...137 ms103 ms5.4 ms
cdn.onesignal.com/sdks/web/v16/OneSignalSDK.page.es6.js?v=160603116 ms88 ms11 ms
connect.facebook.net/en_US/fbevents.js115 ms86 ms28 ms
/signals/config/1949494258686877?v=2.9.303&r=stable&domai...113 ms99 ms14 ms
/Scripts/responsive/loader.b?v=-DFswp_EC2uZw3Oxn_v-cVTLIN...96 ms59 ms8.0 ms
www.google-analytics.com/analytics.js50 ms42 ms3.7 ms

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 Evaluation2.9 s
Other865 ms
Script Parsing & Compilation467 ms
Style & Layout324 ms
Rendering88 ms
Garbage Collection66 ms
Parse HTML & CSS60 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable

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

●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Avoids enormous network payloads Total size was 1,534 KiB
●User Timing marks and measures 20 user timings
●Avoid long main-thread tasks 18 long tasks found
●Image elements have explicit `width` and `height`
●Network Requests
●Network Round Trip Times 100 ms
●Server Backend Latencies 100 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 70 ms
●Avoid large layout shifts 1 layout shift found
○INP breakdown
○Avoid non-composited animations
86

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
More News div#wrowblock-60683_52 > div#wrowblock-60683_54 > div#wrowblock-60683_56 > a.link-more
More div#wrowblock-59682_10 > div#wrowblock-59682_11 > div#wrowblock-59682_12 > a.link-more
More div#wrowblock-61378_10 > div#wrowblock-61378_11 > div#wrowblock-61378_12 > a.link-more
WIDER EUROPE div.carousel__inner > div.media-block > div.media-block__content > a.category

These are opportunities to improve the legibility of your content.

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
FOLLOW US div.menu-pnl > div.menu-pnl__inner > div.menu-pnl__item > h5.menu-pnl__sub-head
US Lawmaker Wilson Flags Western Chips Still Flowing Into Russian, Iranian Dron… div.media-block > div.media-block__content > a > h4.media-block__title
Funding Feud Over Russia's Return To The Venice Biennale div.media-block > div.media-block__content > a > h4.media-block__title
Why Is Iran Parading Pink Weapons? To Coerce Women Into Militancy, Says Rights … div.media-block > div.media-block__content > a > h4.media-block__title
Wider Europe Briefing: The EU's First-Ever Armenia Summit div.media-block > div.media-block__content > a > h4.media-block__title
Czechs Demand Explanation After Russia's Medvedev Threatens Europe's Drone Fact… div.row > a.col-xs-12 > span.trends-wg__item-inner > h4.trends-wg__item-txt

These are opportunities to improve keyboard navigation in your application.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
More News div#wrowblock-60683_52 > div#wrowblock-60683_54 > div#wrowblock-60683_56 > a.link-more
More div#wrowblock-59682_10 > div#wrowblock-59682_11 > div#wrowblock-59682_12 > a.link-more
More div#wrowblock-61378_10 > div#wrowblock-61378_11 > div#wrowblock-61378_12 > a.link-more

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.js html.js

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-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●Buttons have an accessible name
●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.
●`[accesskey]` values are unique
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●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
●Deprecated ARIA roles were not used
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Identical links have the same purpose.
○`[aria-*]` attributes match their roles
○`button`, `link`, and `menuitem` elements have accessible names
○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
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements use only permitted ARIA attributes
○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
○`[aria-*]` attributes have valid values
○`[aria-*]` attributes are valid and not misspelled
○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
○Links are distinguishable without relying on color.
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○No element has a `[tabindex]` value greater than 0
○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
○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 natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLDisplayed sizeActual sizeExpected size
US President Donald Trump has unilaterally extended a cease-fire to give Iran a… div.media-block > a.img-wrap > div.thumb > img.enhanced
gdb.rferl.org/e597b915-3025-48df-8ad8-dffd785a739d_w408_r1.jpg388 x 219408 x 230582 x 329

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
Unload event listeners are deprecated and will be removed.
tags.rferl.org/rferl-pangea/prod/utag.4.js?utv=ut4.52.201802231859 line 6, col 4083
AttributionReporting
connect.facebook.net/en_US/fbevents.js line 279, col 769
●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
●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 clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
92

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.

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
www.rferl.org/washington-on-iranMore
www.rferl.org/FeaturesMore

Format your HTML in a way that enables crawlers to better understand your app’s content.

○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 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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