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Audit Complete

Results for https://db.tt

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Corporate / Enterprise · estimated Tracking: leads
Netherlands Netherlands · Amsterdam Completed: Apr 22, 2026 22:37 UTC
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Mobile 375 × 812

Screenshot of the audited page (Mobile 375×812)

Desktop 1440 × 900

Screenshot of the audited page (Desktop 1440×900)
C71

Site Health

Score: 71 / 100

Based on 8 categories, 0 sections

Room to improve — your 8.2s load time is above Google's 2.5s 'Good' threshold.

Several missing protections leave your users and data exposed.

Several issues make your site difficult for assistive technology users.

Well-optimized for search — your content is discoverable.

Solid infrastructure — fast server responses across the board.

Mostly compliant — a few items need attention.

Missing metadata means poor previews on social media and search.

Heavier than average — reducing page weight saves energy and bandwidth.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

How you compare

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You 71
·
Avg 72
At average
0 50 100
Better than 24% of Amazon Route 53 sites See full Amazon Route 53 benchmark →
jQuery · 1759 peers
You 71
·
Avg 73
At average
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Better than 20% of jQuery sites See full jQuery benchmark →

Top Priorities (5)

1

Content-Security-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers
2

HSTS header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers
3

No Content-Security-Policy header found

Security gaps expose your site and users to attacks, eroding trust.

Security › Content Security Policy
4

Page weighs 18.3 MB (11.8 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget
5

1 button(s) with no accessible text

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Link & Button Quality
View fix priority matrix

Fix Priority Matrix

5 findings

Quick Wins

3

High impact, low effort — start here.

Strategic

2

High impact, requires investment.

Easy Improvements

0

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

0

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →
BeaverCheck badge
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<a href="https://beavercheck.com/results/3ece65ac-1b50-442a-9fce-84f596eef424"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fdb.tt" alt="BeaverCheck Score"></a>
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What fixing these means

Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Your LCP of 8.2s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. Accessibility issues exclude users who rely on assistive technology — an estimated 15% of your potential audience. Addressing the critical issues below would have the most immediate impact on your user trust.

3 security gaps detected — browsers may warn visitors about your site.
Your LCP is 8.2s — fixing the 1 performance critical could bring it under Google's 2.5s 'Good' threshold.
1 accessibility issue excludes users who rely on assistive technology.

Conversion Barriers

3 critical 5 warning

8 barrier(s) likely increasing bounce by ~31%.

Speed (2)

Page takes 8.2s to load

+12% bounce

Users abandon at ~3s — you're 5.7s over the 2.5s threshold

Fix: Optimize render-blocking resources, preload the hero image, and compress images

Page feels frozen for 3.6s

+5% bounce

Clicks on the primary CTA are ignored while JavaScript runs

Fix: Break up long tasks; defer non-critical JavaScript to post-hydration

Trust (2)

No HSTS header

+1% bounce

Returning visitors are briefly exposed to downgrade attacks on first request

Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains

No Content-Security-Policy header

+1% bounce

Higher XSS blast radius — one compromised script can exfiltrate the checkout form

Fix: Ship a reporting-only CSP first, then enforce once violations are clean

Content (2)

No Open Graph tags

+2% bounce

Links shared on LinkedIn / Slack / Facebook show bare URLs — referral clicks drop

Fix: Add og:title, og:description, og:image, og:url to the page head

Content is hard to read

+2% bounce

Graduate-level reading difficulty — limits the addressable audience for product or blog pages

Fix: Shorten sentences; replace jargon with plain language; target Flesch ease ≥60

Navigation (2)

10 link(s) with generic text ("click here", "read more")

+1% bounce

Screen-reader users navigating by link list see no context — and search engines can't infer relevance

Fix: Rewrite with descriptive phrases that identify the destination

34 broken link(s) on the page

+5% bounce

Clicks land on 404s — trust drops and the session often ends

Fix: Fix or remove the broken destinations surfaced on the Content tab

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Return on Investment

$500 investment → $6,204/month returns + USD 7,500 risk avoided

Payback period: < 1 month First-year ROI: +14789%

Investment

$500

5h · 5 findings

Monthly returns

$6,204 /mo

~$74,447 / year

  • Conversions recovered $6,201
  • Bandwidth savings $2.98

Regulatory risk avoided

USD 7,500

if kept compliant

  • CCPA/CPRA USD 7,500

Payback period

0 12mo 24mo

$150 — in quick wins — start here for the fastest payback

Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.

Full methodology & sources

Estimated Remediation Cost

$500

5.0 developer hours at $100/hr

Based on United States rates ($100/hr)

Quick wins
$150 3 fixes in ~90 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions
$ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

$628 / month at risk

~$7,536 / year if left unfixed

Compliance Risk

$7,500

CCPA/CPRA
  • No privacy policy link detected
    CCPA/CPRA: USD 2,500 – USD 7,500
  • Privacy Policy not detected
    CCPA/CPRA: USD 2,500 – USD 7,500

Bandwidth Waste

$2.98 /mo

37267.7 MB/mo × 0.080 USD/GB

  • Optimize transfer: save ~3.7 MB per page load
    Saves $2.98/mo

Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Unique monthly visitors from your analytics

Purchases, signups, or key actions

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue
Current bounce (est.)
After fixes (est.)
Estimated bounce reduction

Fix 5 critical issues to capture this value

How this is calculated

Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

28
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

4.78 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

8.23 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

3.60 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.057

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

8.66 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

22.95 s

Detailed Report

Audit breakdown by category with detailed findings.

28

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

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

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
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...3600.0 s5.3 MiB
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...3600.0 s1.7 MiB
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...3600.0 s1.3 MiB
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...3600.0 s830.7 KiB
assets.adobedtm.com/7c31e7b46b8e/5feae65e0b10/launch-9b21c433d0d6.min.js3600.0 s47.8 KiB
/warp/conversion/dropbox/warp/en-us/index/desktop-mobile-...86400.0 s49.3 KiB
/warp/conversion/dropbox/warp/en-us/index/october-2025-la...86400.0 s17.7 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Crunch....86400.0 s12.9 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Cirque....86400.0 s9.3 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Hydro.s...86400.0 s7.8 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/McLaren...86400.0 s4.0 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Zoom.sv...86400.0 s2.3 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Lincoln...86400.0 s2.2 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Katz.sv...86400.0 s2.2 KiB
/7c31e7b46b8e/5feae65e0b10/4a7579f9708e/RCe690552bddfc46d...3600.0 s809 B
/7c31e7b46b8e/5feae65e0b10/4a7579f9708e/RC07e99ffb24cd457...3600.0 s666 B
/warp/conversion/dropbox/warp/icons/dash-logo-nav.svg?id=...86400.0 s1.1 KiB
/7c31e7b46b8e/5feae65e0b10/4a7579f9708e/RC388cd7fa3bf94c2...3600.0 s585 B
/warp/conversion/dropbox/warp/icons/reclaim-dbx-waffle-32...86400.0 s1.1 KiB
/7c31e7b46b8e/5feae65e0b10/4a7579f9708e/RC5525b8317527424...3600.0 s534 B
/warp/conversion/dropbox/warp/icons/replay-logo-nav.svg?i...86400.0 s1.0 KiB
/warp/conversion/dropbox/warp/icons/DocSend-logo-nav.svg?...86400.0 s956 B
/warp/conversion/dropbox/warp/icons/dropbox-sign-logo.svg...86400.0 s939 B
/warp/conversion/dropbox/warp/icons/Dropbox-logo-nav.svg?...86400.0 s911 B
/warp/conversion/dropbox/warp/icons/arrow_right.svg?id=e5...86400.0 s895 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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:39.861 source:map[column:785252 line:2 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflbRcsxa.js 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:90.571 source:map[type:text value:[unattributed]]] map[reflowTime:33.458 source:map[column:294121 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflbRcsxa.js urlProvider:network]] map[reflowTime:1.293 source:map[column:752704 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflbRcsxa.js urlProvider:network]] map[reflowTime:7.242 source:map[column:762533 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflbRcsxa.js urlProvider:network]] map[reflowTime:47.118 source:map[column:770303 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflbRcsxa.js urlProvider:network]] map[reflowTime:39.861 source:map[column:1.362981e+06 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflbRcsxa.js urlProvider:network]] map[reflowTime:0.648 source:map[column:163834 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_fingerprintjs_fpjs-pro-static_fp-vflGINDbV.js urlProvider:network]] map[reflowTime:0.077 source:map[column:141087 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_fingerprintjs_fpjs-pro-static_fp-vflGINDbV.js urlProvider:network]] map[reflowTime:0.255 source:map[column:169768 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_fingerprintjs_fpjs-pro-static_fp-vflGINDbV.js urlProvider:network]]]

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
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.

URLTransfer SizeDuration
/static/metaserver/static/css/font_sharp_grotesk-vflwgPRU...12.5 KiB1.4 s
/static/metaserver/static/js/alameda_bundle/alameda_bundl...21.7 KiB1.3 s
/static/typescript/component_libraries/dwg-components/src...469 B170 ms
/static/typescript/component_libraries/dwg-components/src...704 B170 ms
/static/typescript/component_libraries/dwg-components/src...472 B170 ms
/static/typescript/component_libraries/dwg-components/src...772 B170 ms
/static/typescript/component_libraries/dwg-components/src...658 B170 ms
/static/typescript/component_libraries/dwg-components/src...471 B170 ms
/static/typescript/component_libraries/dwg-components/src...40.1 KiB2.3 s
/static/typescript/component_libraries/dwg-components/src...1.1 KiB170 ms
/static/typescript/component_libraries/dwg-components/src...763 B170 ms
/static/typescript/component_libraries/dwg-components/src...523 B170 ms
/static/typescript/component_libraries/dwg-components/src...578 B170 ms
/static/typescript/component_libraries/dwg-components/src...839 B170 ms
/static/typescript/component_libraries/dwg-components/src...556 B170 ms
/static/typescript/component_libraries/dwg-components/src...550 B170 ms
/static/typescript/component_libraries/dwg-components/src...1.2 KiB170 ms
/static/typescript/component_libraries/dwg-components/src...660 B170 ms
/static/typescript/component_libraries/dwg-components/src...646 B170 ms
/static/typescript/component_libraries/dwg-components/src...631 B170 ms
/static/metaserver/static/css/warp/skip_to_main_content-v...735 B781 ms
/static/typescript/component_libraries/dwg-components/src...750 B170 ms
/static/typescript/component_libraries/dwg-components/src...1.5 KiB170 ms
/static/typescript/component_libraries/dwg-components/src...1.4 KiB170 ms
cfl.dropboxstatic.com/static/metaserver/static/css/notify-vfl1v0oiv.css741 B781 ms
/static/typescript/component_libraries/dwg-components/src...601 B170 ms
/static/typescript/component_libraries/dwg-components/src...659 B170 ms
/static/typescript/component_libraries/dwg-components/src...1.4 KiB170 ms
/static/typescript/component_libraries/dwg-components/src...1.4 KiB170 ms
cfl.dropboxstatic.com/static/metaserver/static/css/accessibility-vfliGZNRm.css562 B781 ms
/static/typescript/component_libraries/dwg-components/src...727 B170 ms
/static/typescript/component_libraries/dwg-components/src...614 B170 ms
/static/metaserver/static/css/dig-fonts/index.metaserver-...1.4 KiB781 ms
/static/typescript/component_libraries/dwg-components/src...807 B170 ms
/static/typescript/component_libraries/dwg-components/src...525 B170 ms
/static/metaserver/static/css/dig-components/tokens-vflyw...11.9 KiB1.4 s
/static/typescript/component_libraries/dwg-components/src...625 B170 ms
/static/typescript/component_libraries/dwg-components/src...382 B170 ms
/static/typescript/component_libraries/dwg-components/src...1.4 KiB170 ms
/static/typescript/component_libraries/dwg-components/src...379 B170 ms
/static/typescript/component_libraries/dwg-components/src...491 B170 ms
/static/typescript/component_libraries/dwg-components/src...471 B170 ms
/static/typescript/component_libraries/dwg-components/src...745 B170 ms
/static/metaserver/static/css/dig-fonts/sharp_grotesk_23....1.0 KiB781 ms
/static/typescript/component_libraries/dwg-components/src...566 B170 ms
/static/js/ungated-file-app/src/components/file-input/ind...407 B170 ms
/static/typescript/component_libraries/dwg-components/src...593 B170 ms
/static/metaserver/static/js/warp/components/dwg/dwg_mark...531 B170 ms
/static/typescript/component_libraries/dwg-components/src...476 B170 ms
/static/metaserver/static/js/warp/components/common/warp_...677 B170 ms
/static/metaserver/static/js/warp/context/warp_context.mo...534 B170 ms
/static/metaserver/static/js/warp/components/dwg/dwg_pdf_...546 B170 ms
/static/metaserver/static/css/font_sharp_grotesk-vflRd2mZ...1.2 KiB170 ms
/static/metaserver/static/css/font_paper_atlas_grotesk-vf...910 B781 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: 904 ms
URLTime Spent
db.tt/904 ms
www.dropbox.com/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: 350 ms 52.0 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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

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
/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_war...3.3 s964 ms296 ms
www.dropbox.com/2.5 s158 ms49 ms
Unattributable2.4 s114 ms0.0 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_fin...1.5 s1.2 s29 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_edi...1.2 s1.1 s0.7 ms
/static/metaserver/static/js/alameda_bundle/alameda_bundl...789 ms590 ms45 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_src...433 ms314 ms12 ms
assets.adobedtm.com/7c31e7b46b8e/5feae65e0b10/launch-9b21c433d0d6.min.js374 ms293 ms59 ms
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...333 ms88 ms107 ms
/7c31e7b46b8e/5feae65e0b10/4a7579f9708e/RC5525b8317527424...274 ms270 ms0.6 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_rea...255 ms219 ms22 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_pap...223 ms193 ms2.9 ms
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...220 ms210 ms9.6 ms
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...219 ms194 ms21 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_pri...183 ms127 ms36 ms
accounts.google.com/gsi/client178 ms129 ms42 ms
/en/ccpa_iframe?default_non_ccpa=true&gpc=false&hide_gdpr...153 ms51 ms14 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_api...131 ms123 ms5.1 ms
/static/metaserver/static/pithos/zoom_chat_client.bundle-...101 ms60 ms40 ms
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...88 ms59 ms8.2 ms
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...82 ms79 ms1.2 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_dig...82 ms2.4 ms74 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_red...80 ms55 ms12 ms
/static/metaserver/static/pithos/marketing_tracker_servic...79 ms71 ms2.1 ms
/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_ux_...78 ms70 ms4.2 ms
/7c31e7b46b8e/5feae65e0b10/4a7579f9708e/RC07e99ffb24cd457...60 ms58 ms0.5 ms
/static/metaserver/static/pithos/api_helper_validation.bu...57 ms39 ms9.6 ms
www.dropbox.com/pithos/marketing_tracker_service57 ms47 ms9.3 ms
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...55 ms53 ms0.7 ms
/7c31e7b46b8e/5feae65e0b10/4a7579f9708e/RC388cd7fa3bf94c2...53 ms51 ms0.5 ms
/static/atlas/privacy_consent/ccpa_iframe_bundle_amd/dist...51 ms30 ms17 ms
www.dropbox.com/pithos/api_helper_validation,zoom_chat_client50 ms39 ms11 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 Evaluation7.5 s
Other4.3 s
Style & Layout2.6 s
Script Parsing & Compilation1.2 s
Parse HTML & CSS394 ms
Rendering388 ms
Garbage Collection250 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
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable

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.

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
Improve image delivery
LCP breakdown
LCP request discovery
Modern HTTP
Optimize viewport for mobile
Minify JavaScript
User Timing marks and measures 38 user timings
Avoid long main-thread tasks 20 long tasks found
Image elements have explicit `width` and `height`
Network Requests
Network Round Trip Times 10 ms
Server Backend Latencies 640 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 290 ms
Avoid large layout shifts 4 layout shifts found
INP breakdown
Avoid non-composited animations
91

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
div#warp-metadata > nav.dwg-nav > div.dwg-box > button.dwg-nav__hamburger-button div#warp-metadata > nav.dwg-nav > div.dwg-box > button.dwg-nav__hamburger-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.

Navigation

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body > iframe#ccpa-iframe body > iframe#ccpa-iframe

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
Image elements have `[alt]` attributes
`[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
`<frame>` or `<iframe>` elements have a title
`<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
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
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Uses ARIA roles only on compatible elements
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
`[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
`<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
Tables have different content in the summary attribute and `<caption>`.
All heading elements contain content.
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

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
Fledge

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.

SourceDescription
Not signed in with the identity provider.
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
Mitigate DOM-based XSS with Trusted Types
Detected JavaScript libraries
Page has valid source maps
Redirects HTTP traffic to HTTPS
Ensure proper origin isolation with COOP
Mitigate clickjacking with XFO or CSP
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

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`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

58
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.54 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

2.56 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

365 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.060

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

3.02 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

5.33 s

Detailed Report

Audit breakdown by category with detailed findings.

58

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

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

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.

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.

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:40.04 source:map[column:26738 line:2 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_react-dom-vflLgv8vi.js 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:108.872 source:map[type:text value:[unattributed]]] map[reflowTime:40.04 source:map[column:294121 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflbRcsxa.js urlProvider:network]] map[reflowTime:1.647 source:map[column:752912 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflbRcsxa.js urlProvider:network]] map[reflowTime:7.665 source:map[column:762533 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflbRcsxa.js urlProvider:network]] map[reflowTime:59.922 source:map[column:770303 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflbRcsxa.js urlProvider:network]] map[reflowTime:0.256 source:map[column:1.362981e+06 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/e_warp_warp_page_edison-vflbRcsxa.js urlProvider:network]] map[reflowTime:0.655 source:map[column:163834 line:1 type:source-location url:https://cfl.dropboxstatic.com/static/atlas/warp/warp_page_edison_bundle_amd/dist/c_fingerprintjs_fpjs-pro-static_fp-vflGINDbV.js urlProvider:network]]]

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
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.

URLTransfer SizeDuration
/static/metaserver/static/css/font_sharp_grotesk-vflwgPRU...12.5 KiB332 ms
/static/typescript/component_libraries/dwg-components/src...40.1 KiB561 ms
/static/typescript/component_libraries/dwg-components/src...470 B69 ms
/static/typescript/component_libraries/dwg-components/src...704 B69 ms
/static/typescript/component_libraries/dwg-components/src...772 B69 ms
/static/typescript/component_libraries/dwg-components/src...472 B69 ms
/static/typescript/component_libraries/dwg-components/src...658 B69 ms
/static/typescript/component_libraries/dwg-components/src...763 B69 ms
/static/typescript/component_libraries/dwg-components/src...1.1 KiB69 ms
/static/typescript/component_libraries/dwg-components/src...578 B69 ms
/static/typescript/component_libraries/dwg-components/src...1.2 KiB69 ms
/static/typescript/component_libraries/dwg-components/src...807 B69 ms
/static/metaserver/static/css/dig-components/tokens-vflyw...11.9 KiB332 ms
/static/typescript/component_libraries/dwg-components/src...524 B69 ms
/static/typescript/component_libraries/dwg-components/src...471 B69 ms
/static/metaserver/static/js/alameda_bundle/alameda_bundl...21.7 KiB206 ms
/static/typescript/component_libraries/dwg-components/src...1.4 KiB69 ms
/static/typescript/component_libraries/dwg-components/src...1.4 KiB69 ms
/static/typescript/component_libraries/dwg-components/src...557 B69 ms
/static/typescript/component_libraries/dwg-components/src...631 B69 ms
/static/typescript/component_libraries/dwg-components/src...661 B69 ms
/static/metaserver/static/css/warp/skip_to_main_content-v...737 B240 ms
/static/typescript/component_libraries/dwg-components/src...750 B69 ms
cfl.dropboxstatic.com/static/metaserver/static/css/notify-vfl1v0oiv.css741 B240 ms
/static/typescript/component_libraries/dwg-components/src...1.4 KiB69 ms
/static/typescript/component_libraries/dwg-components/src...614 B69 ms
/static/metaserver/static/css/dig-fonts/index.metaserver-...1.4 KiB240 ms
/static/typescript/component_libraries/dwg-components/src...659 B69 ms
/static/typescript/component_libraries/dwg-components/src...1.5 KiB69 ms
cfl.dropboxstatic.com/static/metaserver/static/css/accessibility-vfliGZNRm.css562 B240 ms
/static/typescript/component_libraries/dwg-components/src...1.4 KiB69 ms
/static/typescript/component_libraries/dwg-components/src...727 B69 ms
/static/typescript/component_libraries/dwg-components/src...379 B69 ms
/static/typescript/component_libraries/dwg-components/src...625 B69 ms
/static/typescript/component_libraries/dwg-components/src...382 B69 ms
/static/typescript/component_libraries/dwg-components/src...745 B69 ms
/static/metaserver/static/css/dig-fonts/sharp_grotesk_23....1.0 KiB240 ms
/static/typescript/component_libraries/dwg-components/src...550 B69 ms
/static/typescript/component_libraries/dwg-components/src...839 B69 ms
/static/typescript/component_libraries/dwg-components/src...646 B69 ms
/static/typescript/component_libraries/dwg-components/src...601 B69 ms
/static/typescript/component_libraries/dwg-components/src...525 B69 ms
/static/typescript/component_libraries/dwg-components/src...565 B69 ms
/static/typescript/component_libraries/dwg-components/src...491 B69 ms
/static/js/ungated-file-app/src/components/file-input/ind...406 B69 ms
/static/typescript/component_libraries/dwg-components/src...471 B69 ms
/static/typescript/component_libraries/dwg-components/src...593 B69 ms
/static/typescript/component_libraries/dwg-components/src...476 B69 ms
/static/metaserver/static/js/warp/components/dwg/dwg_mark...531 B69 ms
/static/metaserver/static/js/warp/context/warp_context.mo...534 B69 ms
/static/metaserver/static/js/warp/components/common/warp_...677 B69 ms
/static/metaserver/static/css/font_sharp_grotesk-vflRd2mZ...1.2 KiB69 ms
/static/metaserver/static/js/warp/components/dwg/dwg_pdf_...546 B69 ms
/static/metaserver/static/css/font_paper_atlas_grotesk-vf...910 B240 ms

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
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...3600.0 s5.3 MiB
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...3600.0 s1.7 MiB
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...3600.0 s1.3 MiB
/cms/content/dam/dropbox/warp/en-us/index/october-2025-la...3600.0 s831.4 KiB
assets.adobedtm.com/7c31e7b46b8e/5feae65e0b10/launch-9b21c433d0d6.min.js3600.0 s47.8 KiB
/warp/conversion/dropbox/warp/en-us/index/october-2025-la...86400.0 s53.1 KiB
/warp/conversion/dropbox/warp/en-us/index/desktop-mobile-...86400.0 s49.3 KiB
/warp/conversion/dropbox/warp/en-us/index/october-2025-la...86400.0 s17.4 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Crunch....86400.0 s12.9 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Cirque....86400.0 s9.1 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Hydro.s...86400.0 s7.6 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/McLaren...86400.0 s3.8 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Lincoln...86400.0 s2.2 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Katz.sv...86400.0 s2.2 KiB
/warp/conversion/dropbox/warp/icons/home-pg-logos/Zoom.sv...86400.0 s2.2 KiB
/7c31e7b46b8e/5feae65e0b10/4a7579f9708e/RCe690552bddfc46d...3600.0 s809 B
/7c31e7b46b8e/5feae65e0b10/4a7579f9708e/RC07e99ffb24cd457...3600.0 s666 B
/7c31e7b46b8e/5feae65e0b10/4a7579f9708e/RC388cd7fa3bf94c2...3600.0 s585 B
/warp/conversion/dropbox/warp/icons/reclaim-dbx-waffle-32...86400.0 s1.1 KiB
/warp/conversion/dropbox/warp/icons/DocSend-logo-nav.svg?...86400.0 s1.1 KiB
/7c31e7b46b8e/5feae65e0b10/4a7579f9708e/RC5525b8317527424...3600.0 s534 B
/warp/conversion/dropbox/warp/icons/dash-logo-nav.svg?id=...86400.0 s1.0 KiB
/warp/conversion/dropbox/warp/icons/replay-logo-nav.svg?i...86400.0 s1.0 KiB
/warp/conversion/dropbox/warp/icons/dropbox-sign-logo.svg...86400.0 s938 B
/warp/conversion/dropbox/warp/icons/Dropbox-logo-nav.svg?...86400.0 s910 B
/warp/conversion/dropbox/warp/icons/arrow_right.svg?id=e5...86400.0 s891 B

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
Glassware campaign review cover div._media_mrwa9_95 > div.dwg-media > picture.dwg-box > img.dwg-media-image
/warp/conversion/dropbox/warp/en-us/index/october-2025-la...52.7 KiB33.5 KiB
Dropbox desktop and mobile screen for file sync and share div.dwg-box > div.dwg-media > picture.dwg-box > img.dwg-media-image
/warp/conversion/dropbox/warp/en-us/index/desktop-mobile-...48.6 KiB16.3 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: 352 ms
URLTime Spent
db.tt/352 ms
www.dropbox.com/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 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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

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
Other1776897429.5 s
Script Evaluation2.1 s
Style & Layout722 ms
Script Parsing & Compilation338 ms
Parse HTML & CSS96 ms
Garbage Collection94 ms
Rendering94 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
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable

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.

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: 20 ms 52.0 KiB

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
LCP request discovery
Modern HTTP
Optimize viewport for mobile
Minify JavaScript
User Timing marks and measures 38 user timings
Avoid long main-thread tasks 10 long tasks found
Image elements have explicit `width` and `height`
Network Requests
Network Round Trip Times 10 ms
Server Backend Latencies 230 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 250 ms
Avoid large layout shifts 4 layout shifts found
INP breakdown
Avoid non-composited animations
96

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

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body > iframe#ccpa-iframe body > iframe#ccpa-iframe

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
`[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
`[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
`<frame>` or `<iframe>` elements have a title
`<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
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
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Uses ARIA roles only on compatible elements
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
`<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
Tables have different content in the summary attribute and `<caption>`.
All heading elements contain content.
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

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
Fledge

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.

SourceDescription
[GSI_LOGGER]: FedCM get() rejects with NetworkError: Error retrieving a token. Error
Not signed in with the identity provider.
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
Mitigate DOM-based XSS with Trusted Types
Detected JavaScript libraries
Page has valid source maps
Redirects HTTP traffic to HTTPS
Ensure proper origin isolation with COOP
Mitigate clickjacking with XFO or CSP
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

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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