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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.

54

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 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:74.589 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.

URLResource SizeEst Savings
main.sc-8eca4c6e-0 > div.relative > div.absolute > img.h-full main.sc-8eca4c6e-0 > div.relative > div.absolute > img.h-full
/_next/image?url=%2Fstatic%2Fimages%2Fblue-watercolor-bg....848.5 KiB812.0 KiB
Collaborative Money Management div.mt-20 > div.flex > div.my-4 > img
/_next/image?url=%2Fstatic%2Fimages%2Fhero-illustration.p...411.4 KiB384.2 KiB
div.mx-auto > h2.mb-8 > a.underline > div.sc-d3b1f0c-0 div.mx-auto > h2.mb-8 > a.underline > div.sc-d3b1f0c-0
opencollective.com/static/images/ofico/ofico-logo.png97.4 KiB86.8 KiB
div.mx-auto > div.relative > div.absolute > img.object-cover div.mx-auto > div.relative > div.absolute > img.object-cover
/_next/image?url=%2Fstatic%2Fimages%2Fgreen-watercolor-bg...31.1 KiB19.0 KiB
a.w-full > div.relative > div.relative > div.sc-d3b1f0c-0 a.w-full > div.relative > div.relative > div.sc-d3b1f0c-0
opencollective.com/static/images/ofico/raft-logo.png60.0 KiB17.3 KiB
div.flex > div.relative > div.absolute > img.h-6 div.flex > div.relative > div.absolute > img.h-6
/_next/image?url=%2Fstatic%2Fimages%2Fsubtitle-green.png&...22.2 KiB14.7 KiB
Social Change Nest background div.mb-12 > a.w-full > div.relative > img.object-cover
/_next/image?url=%2Fstatic%2Fimages%2Fofico%2Fscn-bg.png&...25.7 KiB5.9 KiB
div.flex > div.relative > div.absolute > img.w-full div.flex > div.relative > div.absolute > img.w-full
/_next/image?url=%2Fstatic%2Fimages%2Fsubtitle-pink.png&w...12.4 KiB4.9 KiB
a.w-full > div.relative > div.relative > div.sc-d3b1f0c-0 a.w-full > div.relative > div.relative > div.sc-d3b1f0c-0
opencollective.com/static/images/ofico/oce-logo.png15.4 KiB4.7 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-1-IMG
nodeLabel: Collaborative Money Management
path: 1,HTML,1,BODY,3,DIV,0,DIV,1,MAIN,0,DIV,0,DIV,1,DIV,1,IMG
selector: div.mt-20 > div.flex > div.my-4 > img
snippet: <img alt="Collaborative Money Management" loading="eager" width="2586" height="1597" decoding="async" data-nimg="1" style="color:transparent;max-width:100%;height:auto" srcset="https://next-images.opencollective.com/_next/image?url=%2Fstatic%2Fimages%…" src="https://next-images.opencollective.com/_next/image?url=%2Fstatic%2Fimages%…">

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
opencollective.com/static/images/ofico/ofico-logo.png86400.0 s98.3 KiB
opencollective.com/static/images/ofico/raft-logo.png86400.0 s60.8 KiB
opencollective.com/static/images/ofico/giftcollective-logo.png86400.0 s43.7 KiB
opencollective.com/static/images/ofico/scn-logo.png86400.0 s28.2 KiB
opencollective.com/static/images/ofico/oce-logo.png86400.0 s16.2 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s10.7 KiB
opencollective.com/static/images/ofico/osc-logo.png86400.0 s7.1 KiB

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

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

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: 2.1 s 497.8 KiB
URLTransfer SizeEst Savings
opencollective.com/_next/static/chunks/appCommon-8ef9f2ad60d02f5d.js469.8 KiB297.3 KiB
opencollective.com/_next/static/chunks/framework-859673bda8a51a7d.js114.0 KiB78.6 KiB
opencollective.com/_next/static/chunks/1321-d9be0253e305e9b9.js122.6 KiB56.3 KiB
opencollective.com/_next/static/chunks/1586-19927f5c8b6f7147.js30.0 KiB24.2 KiB
opencollective.com/_next/static/chunks/435-859c19df3b862776.js25.9 KiB21.2 KiB
opencollective.com/_next/static/chunks/8160-a466f96e1bf8db74.js23.1 KiB20.1 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
opencollective.com/_next/static/chunks/framework-859673bda8a51a7d.js812 ms657 ms107 ms
opencollective.com/652 ms15 ms0.5 ms
opencollective.com/_next/static/chunks/pages/_app-f01c383910bb7bc5.js599 ms579 ms20 ms
Unattributable405 ms9.0 ms0.0 ms
opencollective.com/_next/static/chunks/appCommon-8ef9f2ad60d02f5d.js303 ms106 ms186 ms
opencollective.com/_next/static/chunks/pages/index-fb503a85d698341e.js181 ms180 ms0.4 ms
opencollective.com/_next/static/chunks/main-509d937f6c6b2d75.js144 ms121 ms18 ms
opencollective.com/_next/static/chunks/i18n-messages-en-json.18046a978ba7d5a6.js88 ms1.4 ms86 ms
opencollective.com/_next/static/chunks/1321-d9be0253e305e9b9.js87 ms72 ms15 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 Evaluation1.8 s
Other667 ms
Script Parsing & Compilation504 ms
Style & Layout353 ms
Parse HTML & CSS51 ms
Rendering44 ms
Garbage Collection24 ms

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.

URLTransfer Size
/_next/image?url=%2Fstatic%2Fimages%2Fblue-watercolor-bg....849.6 KiB
opencollective.com/_next/static/chunks/appCommon-8ef9f2ad60d02f5d.js470.7 KiB
/_next/image?url=%2Fstatic%2Fimages%2Fhero-illustration.p...412.1 KiB
opencollective.com/_next/static/chunks/framework-859673bda8a51a7d.js114.9 KiB
opencollective.com/_next/static/chunks/i18n-messages-en-json.18046a978ba7d5a6.js109.1 KiB
opencollective.com/static/images/ofico/ofico-logo.png98.3 KiB
opencollective.com/_next/static/media/Inter-Bold.7bef4653.woff297.9 KiB
opencollective.com/_next/static/media/Inter-SemiBold.dbb62f19.woff297.8 KiB
opencollective.com/_next/static/media/Inter-Medium.4880c56d.woff297.6 KiB
opencollective.com/_next/static/media/Inter-Regular.8ff4acff.woff291.3 KiB

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

●Layout shift culprits
●Document request latency
●Optimize DOM size
●Font display
●LCP breakdown
●Modern HTTP
●Network dependency tree
●Render blocking requests
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Reduce unused CSS
●User Timing marks and measures 5 user timings
●Avoid long main-thread tasks 12 long tasks found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 10 ms
●Server Backend Latencies 70 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
●Initial server response time was short Root document took 20 ms
●Avoid large layout shifts 1 layout shift found
○INP breakdown
○Avoid non-composited animations
89

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
English (100%) div.xl:flex > div.max-w-xs > div.relative > button.flex

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

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta head > meta

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
●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 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
●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
○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
○Form elements have associated labels
○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.
○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.
96

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)
div.flex > div.relative > div.absolute > img.h-6 div.flex > div.relative > div.absolute > img.h-6
/_next/image?url=%2Fstatic%2Fimages%2Fsubtitle-green.png&...314 x 24 (13.08)720 x 64 (11.25)

General

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.

URLMap URL
opencollective.com/_next/static/chunks/appCommon-8ef9f2ad60d02f5d.jsopencollective.com/_next/static/chunks/appCommon-8ef9f2ad60d02f5d.js.map
opencollective.com/_next/static/chunks/webpack-360d78d57661def5.jsopencollective.com/_next/static/chunks/webpack-360d78d57661def5.js.map
opencollective.com/_next/static/chunks/pages/signin-78b1abce3b2dffa9.jsopencollective.com/_next/static/chunks/pages/signin-78b1abce3b2dffa9.js.map
opencollective.com/_next/static/chunks/pages/index-fb503a85d698341e.jsopencollective.com/_next/static/chunks/pages/index-fb503a85d698341e.js.map
opencollective.com/_next/static/chunks/pages/_app-f01c383910bb7bc5.jsopencollective.com/_next/static/chunks/pages/_app-f01c383910bb7bc5.js.map
opencollective.com/_next/static/chunks/main-509d937f6c6b2d75.jsopencollective.com/_next/static/chunks/main-509d937f6c6b2d75.js.map
opencollective.com/_next/static/chunks/framework-859673bda8a51a7d.jsopencollective.com/_next/static/chunks/framework-859673bda8a51a7d.js.map
opencollective.com/_next/static/chunks/9639-8c5b471d470de9e3.jsopencollective.com/_next/static/chunks/9639-8c5b471d470de9e3.js.map
opencollective.com/_next/static/chunks/9213-53c417084c7f2fcf.jsopencollective.com/_next/static/chunks/9213-53c417084c7f2fcf.js.map
opencollective.com/_next/static/chunks/8160-a466f96e1bf8db74.jsopencollective.com/_next/static/chunks/8160-a466f96e1bf8db74.js.map
opencollective.com/_next/static/chunks/7496-e3af00f290d22b85.jsopencollective.com/_next/static/chunks/7496-e3af00f290d22b85.js.map
opencollective.com/_next/static/chunks/6327-ba2651b0346d7e2d.jsopencollective.com/_next/static/chunks/6327-ba2651b0346d7e2d.js.map
opencollective.com/_next/static/chunks/6097-b1aadb05d1e2b7ba.jsopencollective.com/_next/static/chunks/6097-b1aadb05d1e2b7ba.js.map
opencollective.com/_next/static/chunks/5085-5a65237dc716b252.jsopencollective.com/_next/static/chunks/5085-5a65237dc716b252.js.map
opencollective.com/_next/static/chunks/4534-7fe3726a6488e328.jsopencollective.com/_next/static/chunks/4534-7fe3726a6488e328.js.map
opencollective.com/_next/static/chunks/435-859c19df3b862776.jsopencollective.com/_next/static/chunks/435-859c19df3b862776.js.map
opencollective.com/_next/static/chunks/23-29ed13dd4f27e646.jsopencollective.com/_next/static/chunks/23-29ed13dd4f27e646.js.map
opencollective.com/_next/static/chunks/1586-19927f5c8b6f7147.jsopencollective.com/_next/static/chunks/1586-19927f5c8b6f7147.js.map
opencollective.com/_next/static/chunks/1554-8732c77b501cb425.jsopencollective.com/_next/static/chunks/1554-8732c77b501cb425.js.map
opencollective.com/_next/static/chunks/1321-d9be0253e305e9b9.jsopencollective.com/_next/static/chunks/1321-d9be0253e305e9b9.js.map
●Uses HTTPS
●Avoids deprecated APIs
●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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