C — https://interestingengineering.com

Site Health

Score: 76 / 100

Based on 8 categories, 0 sections

Decent speed, but optimizing further could improve engagement.

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.

Rich content metadata — your pages look great everywhere.

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

Consent Manager · 15 peers

You 76

Avg 73

At average

0 50 100

Better than 73% of Consent Manager sites See full Consent Manager benchmark →

core-js · 960 peers

You 76

Avg 72

At average

0 50 100

Better than 84% of core-js sites See full core-js benchmark →

Top Priorities (5)

Content-Security-Policy header is missing

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

Security › Security Headers

HSTS header is missing

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

Security › Security Headers

No Content-Security-Policy header found

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

Security › Content Security Policy

Page weighs 26.1 MB (18.7 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget

1 control(s) without accessible label

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

Accessibility › Form Accessibility

View fix priority matrix

Fix Priority Matrix

5 findings

Impact

Quick Wins

High impact, low effort — start here.

Strategic

High impact, requires investment.

Easy Improvements

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →

Embed this badge

Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Finterestingengineering.com)](https://beavercheck.com/results/423d8c12-59b0-48f3-bd97-d34356a2780c)

HTML

<a href="https://beavercheck.com/results/423d8c12-59b0-48f3-bd97-d34356a2780c"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Finterestingengineering.com" alt="BeaverCheck Score"></a>

Image URL

https://beavercheck.com/badge?url=https%3A%2F%2Finterestingengineering.com

This badge auto-updates with your latest scan result.

What fixing these means

Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Your LCP of 36.6s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. 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 36.6s — 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.

Could reach Estimate based on resolving critical issues

Conversion Barriers

3 critical 3 warning

6 barrier(s) likely increasing bounce by ~29%.

Speed (2)

Page takes 36.6s to load

+12% bounce

Users abandon at ~3s — you're 34.1s over the 2.5s threshold

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

Page feels frozen for 5.8s

+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

Usability (1)

1 form field(s) without a label

+2% bounce

Screen readers skip unlabeled fields; autofill can't identify them; checkout abandonment spikes

Fix: Associate every input with a visible <label for="…">; add autocomplete attributes

Navigation (1)

4 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

€425 investment → €4.35/month returns + EUR 120,500,000 risk avoided

Payback period: > 2 years First-year ROI: -88%

Investment

€425

5h · 5 findings

Monthly returns

€4.35 /mo

~€52 / year

Bandwidth savings €4.35

Regulatory risk avoided

EUR 120,500,000

if kept compliant

ePrivacy Directive EUR 100,000,000
GDPR EUR 20,000,000
EAA EUR 500,000

€128 — 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

€425

5.0 developer hours at €85/hr

Based on European Union rates (€85/hr)

Quick wins

€128 3 fixes in ~90 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions

Custom rate

€ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

€10,041,671 / month at risk

~€120,500,052 / year if left unfixed

Compliance Risk

€120,500,000

ePrivacy DirectiveGDPREAA

No privacy policy link detected
GDPR: EUR 10,000 – EUR 20,000,000
6 advertising/retargeting trackers detected
GDPR: EUR 10,000 – EUR 20,000,000
Trackers detected but no cookie policy found
GDPR: EUR 5,000 – EUR 10,000,000

+8 more

Bandwidth Waste

€4.35 /mo

58706.2 MB/mo × 0.074 EUR/GB

Optimize transfer: save ~5.9 MB per page load
Saves €4.35/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

Monthly visitors

Unique monthly visitors from your analytics

Conversion rate (%)

Purchases, signups, or key actions

Avg. order value

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.

Performance

Accessibility

Best Practices

100

SEO

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.

3.15 s

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

36.65 s

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

5.75 s

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

0.099

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

13.67 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.

44.78 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

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.

Request	Cache TTL	Transfer Size
/builds/core/ef1e10d/es2018/js/adthrive.min.js?deployment...	3600.0 s	368.9 KiB
connect.facebook.net/en_US/fbevents.js	1200.0 s	96.6 KiB
ads.adthrive.com/builds/core/ef1e10d/gdpr/vendor/prebid/es2018/prebid.min.js	86400.0 s	174.8 KiB
c.aps.amazon-adsystem.com/apstag.js	3600.0 s	78.4 KiB
cdn.p-n.io/pushly-sdk.min.js?domain_key=2lGk6df1rSYyOtl0K802tDONHmW3wgIpo68Z	300.0 s	45.9 KiB
js.hs-analytics.net/analytics/1776812700000/47062935.js	300.0 s	42.3 KiB
cdn.consentmanager.net/delivery/js/cmp_final.min.js	86400.0 s	101.0 KiB
/signals/config/1485557105695108?v=2.9.303&r=stable&domai...	1200.0 s	44.8 KiB
js.hscollectedforms.net/collectedforms.js	300.0 s	26.4 KiB
cdn.id5-sync.com/api/1.0/id5PrebidModule.js	3600.0 s	29.5 KiB
js.hs-banner.com/v2/47062935/banner.js	300.0 s	23.6 KiB
/delivery/customdata/bV8xLndfODY2ODUucl9HRFBSLmxfZW4uZF8z...	3600.0 s	21.9 KiB
/signals/config/1133649460836214?v=2.9.303&r=stable&domai...	1200.0 s	16.3 KiB
scripts.clarity.ms/0.8.59/clarity.js	86400.0 s	26.2 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...	14400.0 s	13.8 KiB
experiments.parsely.com/vip-experiments.js?apiKey=interestingengineering.com	30.0 s	8.9 KiB
snap.licdn.com/li.lms-analytics/insight.min.js	86400.0 s	18.7 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	10.7 KiB
config.aps.amazon-adsystem.com/configs/4fbba76f-7987-4fa2-9733-c27eb3a2170b	3600.0 s	2.3 KiB
ads.adthrive.com/builds/customizations/6661dd7712e1ac035b611f89.js	0.0 ms	1.5 KiB
js.hs-scripts.com/47062935.js	90.0 s	1.1 KiB
ads.adthrive.com/sites/6661dd7712e1ac035b611f89/ads.min.css	3600.0 s	1009 B
/collect?v=2&fmt=js&pid=4435738&time=1776812784586&url=ht...	0.0 ms	693 B
/tr/?id=1485557105695108&ev=PageView&dl=https%3A%2F%2Fint...	0.0 ms	16 B

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:47.162 source:map[column:6467 line:1 type:source-location url:https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.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:195.068 source:map[type:text value:[unattributed]]] map[reflowTime:43.946 source:map[column:31648 line:7 type:source-location url:https://interestingengineering.com/_next/static/chunks/039moyka5lmo~.js urlProvider:network]] map[reflowTime:3.216 source:map[column:5394 line:8 type:source-location url:https://interestingengineering.com/_next/static/chunks/0b-l3.zhwqy8-.js urlProvider:network]] map[reflowTime:4.002 source:map[column:31978 line:190 type:source-location url:https://ads.adthrive.com/sites/6661dd7712e1ac035b611f89/ads.min.js?referrer=https%3A%2F%2Finterestingengineering.com%2F&cb=61 urlProvider:network]] map[reflowTime:8.877 source:map[column:27357 line:190 type:source-location url:https://ads.adthrive.com/sites/6661dd7712e1ac035b611f89/ads.min.js?referrer=https%3A%2F%2Finterestingengineering.com%2F&cb=61 urlProvider:network]] map[reflowTime:4.702 source:map[column:86058 line:19 type:source-location url:https://js.hs-analytics.net/analytics/1776812700000/47062935.js urlProvider:network]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
Sir Charles Algernon Parsons `div.t-w-44 > div.t-w-44 > a.t-group > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB	1.7 MiB
Samuel W. Alderson `div.t-w-44 > div.t-w-44 > a.t-group > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB	1.7 MiB
The RV is becoming an energy platform. These companies are building it that way `div.t-px-[20px] > div.t-flex > a.t-group > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB	1.7 MiB
New Northrop F/A-XX video gives clearest look yet at US Navy's 6th-gen fighter `div.t-relative > a.t-group > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.3 MiB	1.3 MiB
The optical engineering behind Star Catcher's 1.1 kW test `div.t-px-[20px] > div.t-flex > a.t-group > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.1 MiB	1.1 MiB
Prediction markets and AI the focus of new research project by Pharos Network `div#hero-slide-1 > a.t-block > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.0 MiB	1.0 MiB
No racetrack glory for China’s AI robots against the data challenge `div.t-px-[20px] > div.t-flex > a.t-group > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	938.1 KiB	936.1 KiB
How spinning sails are cutting fuel use in modern shipping `div.t-px-[20px] > div.t-flex > a.t-group > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	593.2 KiB	591.5 KiB
$9.9M Contract for the M240B — Here’s Why `div#vd-slide-1 > a.t-group > div.t-relative > img.t-absolute`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	478.2 KiB	476.3 KiB
Tesla's Optimus humanoid robot greets runners, poses for photos at Boston Marat… `div#hero-slide-0 > a.t-block > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	431.6 KiB	424.5 KiB
NASA is right to focus on 'hardware rich' approach following Artemis II heat sh… `div.t-px-[20px] > div.t-flex > a.t-group > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	422.1 KiB	420.3 KiB
Rockets to rival SpaceX and NASA `div#vd-slide-1 > a.t-group > div.t-relative > img.t-absolute`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	384.5 KiB	382.5 KiB
Tien Kung 3.0 humanoid wins China's Robot Warrior Challenge with zero human con… `div#hero-slide-3 > a.t-block > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	257.1 KiB	251.7 KiB
T-7A Red Hawk: Future Of Pilot Training Starts Here `div#vd-slide-0 > a.t-group > div.t-relative > img.t-absolute`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	251.6 KiB	250.1 KiB
Video: YouTuber's homemade nuclear battery draws power from tritium vials' radi… `div.md:t-hidden > a.t-block > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	216.0 KiB	206.8 KiB
China's Tesla wannabes split over end-to-end AI framework `div.t-group > a.t-block > div.t-relative > img.t-w-full`	cms.interestingengineering.com/wp-content/uploads/2026/03/Untitled-2_3f860c.jpg	186.8 KiB	184.2 KiB
Not Helicopter, Not Drone \| Inside UK's CAPSTONE `div#vd-slide-0 > a.t-group > div.t-relative > img.t-absolute`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	181.3 KiB	180.3 KiB
Photos: New Mercedes C-class EV hits 0-60 mph in 3.9 seconds with 482 horsepower `div.t-group > a.t-block > div.t-relative > img.t-w-full`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	180.4 KiB	179.1 KiB
New 3D-printed tech uses metal wires instead of gases for sustainable cooling `div.t-relative > a.t-group > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	176.9 KiB	173.9 KiB
Kairos breaks ground for first 4th-gen nuclear reactor in US to power Google da… `div.t-relative > a.t-group > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	175.8 KiB	172.7 KiB
US Navy to test low-cost hypersonic boost-glide missiles for existing fleet shi… `div.t-relative > a.t-group > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	132.2 KiB	129.9 KiB
When war becomes a data problem `div.t-group > a.t-block > div.t-relative > img.t-w-full`	cms.interestingengineering.com/wp-content/uploads/2026/03/Untitled-design-27.jpg	127.2 KiB	125.5 KiB
No racetrack glory for China’s AI robots against the data challenge `div.t-group > a.t-block > div.t-relative > img.t-w-full`	/wp-content/uploads/2026/04/GettyImages-2199878361.jpg	120.4 KiB	119.1 KiB
Photos: Zeekr 8X comes with 1,381 horsepower, cockpit-driving integrated system `div.t-group > a.t-block > div.t-relative > img.t-w-full`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	107.3 KiB	106.5 KiB
Autonomous Alfie: New humanoid robot for complex industrial tasks unveiled `div.t-relative > a.t-group > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	100.6 KiB	98.8 KiB
Airbus' upgraded A400M mothership can launch 50 strike drones or 12 cruise miss… `div.t-relative > a.t-group > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	96.7 KiB	95.1 KiB
Critical minerals and rare earth supply `div.md:t-hidden > div.t-flex > div.t-relative > img.t-w-full`	/wp-content/uploads/2026/03/Screenshot-2026-03-30-at-11.1...	87.8 KiB	85.5 KiB
First-in-human study confirms safety of graphene-based brain interface `div#hero-slide-2 > a.t-block > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	85.9 KiB	84.1 KiB
NASA is right to focus on 'hardware rich' approach following Artemis II heat sh… `div.t-group > a.t-block > div.t-relative > img.t-w-full`	cms.interestingengineering.com/wp-content/uploads/2026/04/Untitled-1_7c6c42.jpg	62.8 KiB	61.9 KiB
NASA resets Artemis, but China could still win the race to the Moon `div.t-group > a.t-block > div.t-relative > img.t-w-full`	cms.interestingengineering.com/wp-content/uploads/2026/03/Untitled-1_d6c38a.jpg	62.5 KiB	61.6 KiB

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.

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

title: Preconnected origins

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

title: Preconnect candidates

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
interestingengineering.com/js/gapw-init.js	2.1 KiB	509 ms
experiments.parsely.com/vip-experiments.js?apiKey=interestingengineering.com	8.9 KiB	931 ms

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

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

Estimated savings: 840 ms 879.6 KiB

URL	Transfer Size	Est Savings
/builds/core/ef1e10d/es2018/js/adthrive.min.js?deployment...	368.6 KiB	160.4 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31...	187.7 KiB	131.1 KiB
ads.adthrive.com/builds/core/ef1e10d/gdpr/vendor/prebid/es2018/prebid.min.js	174.4 KiB	125.7 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	90.6 KiB
www.googletagmanager.com/gtag/js?id=G-0Y8RGJWRV7&cx=c&gtm=4e64h1	172.7 KiB	69.3 KiB
www.googletagmanager.com/gtag/js?id=G-7BEHH4VG6K&cx=c&gtm=4e64h1	175.7 KiB	65.2 KiB
interestingengineering.com/_next/static/chunks/119uhjrnv1x.4.js	65.0 KiB	56.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-WKW2TKP	124.1 KiB	47.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-KZVMHRW9	105.4 KiB	43.7 KiB
cdn.consentmanager.net/delivery/js/cmp_final.min.js	100.6 KiB	36.4 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	33.2 KiB
interestingengineering.com/_next/static/chunks/107yos3u0uadk.js	68.9 KiB	20.1 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.

URL	Total CPU Time	Script Evaluation	Script Parse
Unattributable	3.2 s	559 ms	0.0 ms
interestingengineering.com/_next/static/chunks/107yos3u0uadk.js	3.0 s	2.6 s	35 ms
interestingengineering.com/	2.1 s	145 ms	67 ms
/delivery/customdata/bV8xLndfODY2ODUucl9HRFBSLmxfZW4uZF8z...	1.4 s	1.2 s	15 ms
/builds/core/ef1e10d/es2018/js/adthrive.min.js?deployment...	1.3 s	971 ms	243 ms
js.hs-analytics.net/analytics/1776812700000/47062935.js	1.2 s	835 ms	17 ms
www.googletagmanager.com/gtm.js?id=GTM-WKW2TKP	965 ms	807 ms	88 ms
/sites/6661dd7712e1ac035b611f89/ads.min.js?referrer=https...	628 ms	410 ms	21 ms
ads.adthrive.com/builds/core/ef1e10d/gdpr/vendor/prebid/es2018/prebid.min.js	543 ms	364 ms	79 ms
www.googletagmanager.com/gtag/js?id=G-0Y8RGJWRV7&cx=c&gtm=4e64h1	543 ms	447 ms	86 ms
www.googletagmanager.com/gtag/js?id=G-7BEHH4VG6K&cx=c&gtm=4e64h1	536 ms	451 ms	78 ms
cdn.p-n.io/pushly-sdk.min.js?domain_key=2lGk6df1rSYyOtl0K802tDONHmW3wgIpo68Z	528 ms	446 ms	26 ms
/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31...	517 ms	418 ms	91 ms
www.googletagmanager.com/gtag/js?id=AW-674765182&cx=c&gtm=4e64h1	432 ms	360 ms	69 ms
interestingengineering.com/cdn-cgi/challenge-platform/scripts/jsd/main.js	414 ms	394 ms	5.0 ms
interestingengineering.com/js/recovery.js	355 ms	201 ms	5.3 ms
connect.facebook.net/en_US/fbevents.js	353 ms	173 ms	176 ms
scripts.clarity.ms/0.8.59/clarity.js	296 ms	230 ms	14 ms
/signals/config/1485557105695108?v=2.9.303&r=stable&domai...	277 ms	242 ms	30 ms
c.aps.amazon-adsystem.com/apstag.js	221 ms	151 ms	57 ms
securepubads.g.doubleclick.net/tag/js/gpt.js	200 ms	158 ms	17 ms
www.googletagmanager.com/gtm.js?id=GTM-KZVMHRW9	184 ms	104 ms	72 ms
cdn.id5-sync.com/api/1.0/id5PrebidModule.js	156 ms	126 ms	16 ms
js.hscollectedforms.net/collectedforms.js	149 ms	120 ms	11 ms
cdn.consentmanager.net/delivery/js/cmp_final.min.js	126 ms	58 ms	67 ms
snap.licdn.com/li.lms-analytics/insight.min.js	116 ms	99 ms	9.7 ms
cdn.parsely.com/keys/interestingengineering.com/p.js?gtm_ver=3.2	111 ms	88 ms	9.4 ms
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	108 ms	55 ms	5.1 ms
interestingengineering.com/_next/static/chunks/039moyka5lmo~.js	79 ms	12 ms	14 ms
/signals/config/1133649460836214?v=2.9.303&r=stable&domai...	55 ms	41 ms	13 ms
interestingengineering.com/_next/static/chunks/06muz3cuqvof0.css	52 ms	0.0 ms	0.0 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.

Category	Time Spent
Script Evaluation	13.5 s
Other	3.3 s
Style & Layout	2.0 s
Script Parsing & Compilation	1.6 s
Parse HTML & CSS	416 ms
Garbage Collection	387 ms
Rendering	347 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 reason	Failure type
The page was evicted from the cache because an active network connection received too much data. Chrome limits the amount of data that a page may receive while cached.	Not actionable

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.3 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.3 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.1 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.0 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	938.7 KiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	593.8 KiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	478.7 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

●LCP request discovery

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●User Timing marks and measures 20 user timings

●Avoid long main-thread tasks 20 long tasks found

●Image elements have explicit `width` and `height`

●Network Requests

●Network Round Trip Times 90 ms

●Server Backend Latencies 290 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 10 ms

●Avoid large layout shifts 3 layout shifts found

○INP breakdown

○Avoid non-composited animations

Accessibility

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

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
Manage Your Privacy `div#cmpboxcontent > div.cmpboxtxtdiv > h1#cmpboxheadline1 > span`
Accept All `div.cmpboxbtns > span#cmpwelcomebtnyes > a.cmpboxbtn > span#cmpbntyestxt`
Sign In `nav.jsx-4f789dc61c7ce265 > div.jsx-4f789dc61c7ce265 > div.jsx-4f789dc61c7ce265 > a.jsx-4f789dc61c7ce265`
Energy `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
AI and Robotics `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Science `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-flex > div.md:t-hidden > div.t-flex > a.t-text-[#027FC0]`
AI and Robotics `div#hero-slide-0 > div.t-pt-[12px] > div.t-flex > a.t-text-[#027FC0]`
AI and Robotics `div#hero-slide-1 > div.t-pt-[12px] > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.category-links > div.t-flex > span.t-font-normal`
Energy `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
Inside China `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
Beyond Earth `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.category-links > div.t-flex > span.t-font-normal`
Space `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
Transportation `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.category-links > div.t-flex > span.t-font-normal`
Space `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
Innovation `div.t-pt-[12px] > div > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-pt-[12px] > div > div.t-flex > a.t-text-[#027FC0]`
Inside China `div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]`
Beyond Earth `div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]`
and `div.t-flex-1 > div > div.t-flex > span.t-font-normal`
Space `div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]`
AI Logs `div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]`
and `div.t-flex-1 > div > div.t-flex > span.t-font-normal`
AI and Robotics `div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]`
Inside China `div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]`
and `div.t-flex-1 > div > div.t-flex > span.t-font-normal`
Transportation `div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]`
Beyond Earth `div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]`
and `div.t-flex-1 > div > div.t-flex > span.t-font-normal`
Space `div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]`
Research `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.t-inline-flex > div.t-flex > span.t-font-normal`
Energy `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.t-inline-flex > div.t-flex > span.t-font-normal`
Space `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Interviews `a.t-group > div.t-mt-3 > div.t-flex > span.t-text-[#027FC0]`
and `a.t-group > div.t-mt-3 > div.t-flex > span.t-font-normal`
Science `a.t-group > div.t-mt-3 > div.t-flex > span.t-text-[#027FC0]`
Interviews `a.t-group > div.t-mt-3 > div.t-flex > span.t-text-[#027FC0]`
and `a.t-group > div.t-mt-3 > div.t-flex > span.t-font-normal`
Inventor `div.t-w-44 > div.t-self-stretch > div.t-inline-flex > div.t-justify-start`
Engineer `div.t-w-44 > div.t-self-stretch > div.t-inline-flex > div.t-justify-start`
Innovation `div.md:t-hidden > div.t-mt-3 > div.t-flex > a.t-text-[#027FC0]`
Innovation `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Innovation `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Innovation `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex > div.t-flex-1 > div.t-flex > span.t-font-normal`
Science `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Innovation `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex > div.t-flex-1 > div.t-flex > span.t-font-normal`
Science `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Sign up for free `div.t-w-full > div.t-w-full > div.t-w-full > button.t-w-full`
Gaming `div.md:t-hidden > div.t-mt-3 > div.t-flex > a.t-text-[#027FC0]`
and `div.md:t-hidden > div.t-mt-3 > div.t-flex > span.t-font-normal`
Culture `div.md:t-hidden > div.t-mt-3 > div.t-flex > a.t-text-[#027FC0]`
Culture `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Culture `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Culture `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex > div.t-flex-1 > div.t-flex > span.t-font-normal`
AI and Robotics `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Culture `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Military `div.md:t-hidden > div.t-mt-3 > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Energy `div.md:t-hidden > div.t-mt-3 > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Space `div.md:t-hidden > div.t-mt-3 > div.t-flex > a.t-text-[#027FC0]`
Space `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Space `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Space `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Space `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex > div.t-flex-1 > div.t-flex > span.t-font-normal`
Science `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
IE Awards `div.t-flex > div.md:t-hidden > div.t-flex > span.t-text-[#6C757D]`
Update Privacy Preferences `body.min-h-screen > div.adthrive-comscore > div.adthrive-privacy-preferences > a`

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
LATEST `div.t-grid > aside.t-order-7 > div.t-flex > h3.home-heading`

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

●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.

●`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

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

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

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

●Links are distinguishable without relying on color.

●Links have a discernible name

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

●Touch targets have sufficient size and spacing.

●`[lang]` attributes have a valid value

●Document has a main landmark.

●Deprecated ARIA roles were not used

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

●Identical links have the same purpose.

○`[accesskey]` values are unique

○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

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

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

○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.

○`<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

○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.

Best Practices

Trust and Safety

Users are mistrustful of or confused by sites that request to send notifications without context. Consider tying the request to user gestures instead. Learn more about responsibly getting permission for notifications.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source
cdn.p-n.io/pushly-sdk.min.js?domain_key=2lGk6df1rSYyOtl0K802tDONHmW3wgIpo68Z

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.

	URL	Displayed size	Actual size	Expected size
Language: en `div#cmpbox > div#cmplanguage > img.cmplangicon`	eu-us-cdn.consentmanager.net/delivery/flags/en.gif	16 x 11	16 x 11	24 x 17

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
SharedStorage	interestingengineering.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.	interestingengineering.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge	interestingengineering.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
AttributionReporting	snap.licdn.com/li.lms-analytics/insight.min.js
Topics	ads.adthrive.com/builds/core/ef1e10d/gdpr/vendor/prebid/es2018/prebid.min.js line 62, col 181510

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source Description

Source	Description
interestingengineering.com/_next/static/chunks/107yos3u0uadk.js	Error: Minified React error #418; visit https://react.dev/errors/418?args[]=text&args[]= for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at rX (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:45266) at rY (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:46299) at https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:140647 at sh (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:145808) at sd (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:137058) at https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:131883 at se (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:131984) at s$ (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:158548) at MessagePort.z (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:6706)

interestingengineering.com/_next/static/chunks/107yos3u0uadk.js

Error: Minified React error #418; visit https://react.dev/errors/418?args[]=text&args[]= for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
    at rX (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:45266)
    at rY (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:46299)
    at https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:140647
    at sh (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:145808)
    at sd (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:137058)
    at https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:131883
    at se (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:131984)
    at s$ (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:158548)
    at MessagePort.z (https://interestingengineering.com/_next/static/chunks/107yos3u0uadk.js:1:6706)

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Displays images with correct aspect ratio

●Page has the HTML doctype

●Properly defines charset

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

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

100

SEO

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

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

Performance

Accessibility

Best Practices

100

SEO

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.

605 ms

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

1.75 s

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

472 ms

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

0.059

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

5.68 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.

16.57 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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 ▾

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.

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:122.295 source:map[type:text value:[unattributed]]] map[reflowTime:1.734 source:map[column:86058 line:19 type:source-location url:https://js.hs-analytics.net/analytics/1776812700000/47062935.js urlProvider:network]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
Humidity boosts performance of 3D-printed nanogenerator instead of degrading it `div.t-flex-1 > div.t-w-44 > a.t-w-full > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	3.5 MiB	3.5 MiB
University of Michigan's Zack Spica says fiber optic cables can become earthqua… `div.t-flex > a.t-group > div.t-self-stretch > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	3.3 MiB	3.3 MiB
Sir Charles Algernon Parsons `div.t-w-44 > div.t-w-44 > a.t-group > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB	1.7 MiB
John Frederick Bateman `div.t-w-44 > div.t-w-44 > a.t-group > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB	1.7 MiB
Samuel W. Alderson `div.t-w-44 > div.t-w-44 > a.t-group > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB	1.7 MiB
The RV is becoming an energy platform. These companies are building it that way `div.t-px-[20px] > div.t-flex > a.t-group > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB	1.7 MiB
James Fowle Baldwin `div.t-w-44 > div.t-w-44 > a.t-group > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.5 MiB	1.5 MiB
Holt Hallett `div.t-w-44 > div.t-w-44 > a.t-group > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.5 MiB	1.5 MiB
DARPA veteran Paul Eremenko on AI engineers, aerospace bottlenecks, and buildin… `div.t-flex > a.t-group > div.t-self-stretch > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.3 MiB	1.3 MiB
New Northrop F/A-XX video gives clearest look yet at US Navy's 6th-gen fighter `div.t-flex-1 > div.t-w-44 > a.t-w-full > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.3 MiB	1.3 MiB
OnePlanet CEO André Pujadas on building solar recycling infrastructure in the US `div.t-flex > a.t-group > div.t-self-stretch > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.2 MiB	1.2 MiB
The optical engineering behind Star Catcher's 1.1 kW test `div.t-px-[20px] > div.t-flex > a.t-group > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.1 MiB	1.1 MiB
Prediction markets and AI the focus of new research project by Pharos Network `div.t-block > a.t-group > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.0 MiB	1.0 MiB
IEEE's Tom Coughlin on why storage will decide AI's future `div.t-flex > a.t-group > div.t-self-stretch > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.0 MiB	1.0 MiB
No racetrack glory for China’s AI robots against the data challenge `div.t-px-[20px] > div.t-flex > a.t-group > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	938.1 KiB	935.3 KiB
Materials scientist Leonard Siebert on 3D printing for medicine `div.t-flex > a.t-group > div.t-self-stretch > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	684.9 KiB	676.1 KiB
Japan lifts tsunami warning after 7.5 magnitude earthquake hits northern coast `div.t-flex-1 > div.t-w-44 > a.t-w-full > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	667.4 KiB	661.4 KiB
How spinning sails are cutting fuel use in modern shipping `div.t-px-[20px] > div.t-flex > a.t-group > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	593.2 KiB	590.7 KiB
From years to weeks: how AI is rewriting materials discovery `div.t-hidden > div.t-self-stretch > div.t-w-28 > img.t-w-full`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	543.9 KiB	541.9 KiB
From lithium to copper: inside the UK’s e-waste system `div.t-hidden > div.t-self-stretch > div.t-w-28 > img.t-w-full`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	490.5 KiB	488.5 KiB
South Korea's gas battery turns greenhouse gases into electricity during capture `div.t-relative > a.t-group > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	434.4 KiB	431.2 KiB
South Korea's gas battery turns greenhouse gases into electricity during capture `div.t-flex-1 > div.t-w-44 > a.t-w-full > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	434.4 KiB	428.4 KiB
Tesla's Optimus humanoid robot greets runners, poses for photos at Boston Marat… `div.t-block > a.t-group > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	431.6 KiB	427.1 KiB
NASA is right to focus on 'hardware rich' approach following Artemis II heat sh… `div.t-px-[20px] > div.t-flex > a.t-group > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	422.1 KiB	419.5 KiB
Ash Parikh: how drone swarms stay connected under jamming `div.t-hidden > div.t-self-stretch > div.t-w-28 > img.t-w-full`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	411.5 KiB	409.5 KiB
Apple confirms leadership change as Tim Cook hands CEO role to John Ternus `div.t-flex-1 > div.t-w-44 > a.t-w-full > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	327.6 KiB	321.6 KiB
Chinese robotic exoskeleton lets diver glide with less effort, slashes oxygen u… `div.t-flex-1 > div.t-w-44 > a.t-w-full > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	284.1 KiB	278.1 KiB
Photos: New e-bike made from wood packs 350 Wh battery for 50 miles of range `div.t-w-[180px] > div.t-w-[180px] > a > img.t-w-full`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	221.8 KiB	218.7 KiB
Video: YouTuber's homemade nuclear battery draws power from tritium vials' radi… `div.t-hidden > a.t-block > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	216.0 KiB	201.2 KiB
China's Tesla wannabes split over end-to-end AI framework `div.t-w-44 > a.t-group > div.t-self-stretch > img.t-w-full`	cms.interestingengineering.com/wp-content/uploads/2026/03/Untitled-2_3f860c.jpg	186.8 KiB	184.7 KiB
Photos: Air New Zealand unveils world's first economy sleep pods for ultra-long… `div.t-w-[180px] > div.t-w-[180px] > a > img.t-w-full`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	184.6 KiB	182.0 KiB
Photos: New Mercedes C-class EV hits 0-60 mph in 3.9 seconds with 482 horsepower `div.t-w-[180px] > div.t-w-[180px] > a > img.t-w-full`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	180.4 KiB	177.9 KiB
Kairos breaks ground for first 4th-gen nuclear reactor in US to power Google da… `div.t-relative > a.t-group > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	175.8 KiB	174.1 KiB
New 3D-printed tech uses metal wires instead of gases for sustainable cooling `div.t-self-stretch > div.t-flex-1 > a.t-group > img.t-w-full`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	176.9 KiB	167.1 KiB
Sony to gatekeep PlayStation chat behind age verification as safety rules tight… `div.t-self-stretch > div.t-flex-1 > a.t-group > img.t-w-full`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	174.0 KiB	164.3 KiB
Photos: Autonomous robots and drones manage contamination to remove humans from… `div.t-w-[180px] > div.t-w-[180px] > a > img.t-w-full`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	165.3 KiB	163.0 KiB
US Navy to test low-cost hypersonic boost-glide missiles for existing fleet shi… `div.t-flex-1 > div.t-w-44 > a.t-w-full > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	132.2 KiB	128.8 KiB
When war becomes a data problem `div.t-w-44 > a.t-group > div.t-self-stretch > img.t-w-full`	cms.interestingengineering.com/wp-content/uploads/2026/03/Untitled-design-27.jpg	127.2 KiB	125.7 KiB
New theory shows time exists in quantum superpositions, ticks fast and slow `div.t-relative > a.t-group > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	125.6 KiB	124.4 KiB
No racetrack glory for China’s AI robots against the data challenge `div.t-self-stretch > a.t-group > div.t-self-stretch > img.t-w-full`	/wp-content/uploads/2026/04/GettyImages-2199878361.jpg	120.4 KiB	114.9 KiB
Humanoid robot surpasses human world record in Beijing half-marathon, clocking … `div.t-flex-1 > div.t-w-44 > a.t-w-full > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	117.3 KiB	114.2 KiB
Photos: Zeekr 8X comes with 1,381 horsepower, cockpit-driving integrated system `div.t-w-[180px] > div.t-w-[180px] > a > img.t-w-full`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	107.3 KiB	105.8 KiB
Autonomous Alfie: New humanoid robot for complex industrial tasks unveiled `div.t-relative > a.t-group > div.t-relative > img.t-object-cover`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	100.6 KiB	99.6 KiB
Airbus' upgraded A400M mothership can launch 50 strike drones or 12 cruise miss… `div.t-flex-1 > div.t-w-44 > a.t-w-full > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	96.7 KiB	94.2 KiB
Russia gets new supersonic SU-35S jets for striking targets in 2,200-mile-range `div.t-flex-1 > div.t-w-44 > a.t-w-full > img.t-w-44`	/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	91.4 KiB	89.0 KiB
Critical minerals and rare earth supply `div.t-w-full > div.t-w-full > div.t-w-44 > img.t-w-44`	/wp-content/uploads/2026/03/Screenshot-2026-03-30-at-11.1...	87.8 KiB	84.6 KiB
NASA is right to focus on 'hardware rich' approach following Artemis II heat sh… `div.t-w-44 > a.t-group > div.t-self-stretch > img.t-w-full`	cms.interestingengineering.com/wp-content/uploads/2026/04/Untitled-1_7c6c42.jpg	62.8 KiB	62.0 KiB
NASA resets Artemis, but China could still win the race to the Moon `div.t-w-44 > a.t-group > div.t-self-stretch > img.t-w-full`	cms.interestingengineering.com/wp-content/uploads/2026/03/Untitled-1_d6c38a.jpg	62.5 KiB	61.8 KiB
United States `div.t-w-44 > div.t-self-stretch > div.t-inline-flex > img.t-w-4`	/_next/image?url=https%3A%2F%2Fimages.interestingengineer...	18.4 KiB	18.3 KiB
United Kingdom `div.t-w-44 > div.t-self-stretch > div.t-inline-flex > img.t-w-4`	/_next/image?url=https%3A%2F%2Fimages.interestingengineer...	15.0 KiB	15.0 KiB

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.

title: Preconnected origins

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

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
interestingengineering.com/js/gapw-init.js	2.1 KiB	186 ms
experiments.parsely.com/vip-experiments.js?apiKey=interestingengineering.com	8.9 KiB	201 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.

Request	Cache TTL	Transfer Size
/builds/core/3ec6742/es2018/js/adthrive.min.js?deployment...	3600.0 s	368.9 KiB
connect.facebook.net/en_US/fbevents.js	1200.0 s	96.6 KiB
ads.adthrive.com/builds/core/3ec6742/gdpr/vendor/prebid/es2018/prebid.min.js	86400.0 s	172.7 KiB
/public/client_js/capiParamBuilder/clientParamBuilder.bun...	0.0 ms	63.2 KiB
c.aps.amazon-adsystem.com/apstag.js	3600.0 s	78.4 KiB
cdn.p-n.io/pushly-sdk.min.js?domain_key=2lGk6df1rSYyOtl0K802tDONHmW3wgIpo68Z	300.0 s	45.9 KiB
js.hs-analytics.net/analytics/1776812700000/47062935.js	300.0 s	42.3 KiB
cdn.consentmanager.net/delivery/js/cmp_final.min.js	86400.0 s	100.8 KiB
/signals/config/1133649460836214?v=2.9.303&r=stable&domai...	1200.0 s	44.8 KiB
js.hscollectedforms.net/collectedforms.js	300.0 s	26.4 KiB
js.hs-banner.com/v2/47062935/banner.js	300.0 s	23.6 KiB
/delivery/customdata/bV8xLndfODY2ODUucl9HRFBSLmxfZW4uZF8z...	3600.0 s	21.9 KiB
/signals/config/1485557105695108?v=2.9.303&r=stable&domai...	1200.0 s	16.4 KiB
scripts.clarity.ms/0.8.59/clarity.js	86400.0 s	26.2 KiB
experiments.parsely.com/vip-experiments.js?apiKey=interestingengineering.com	30.0 s	8.9 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...	14400.0 s	12.3 KiB
snap.licdn.com/li.lms-analytics/insight.min.js	86400.0 s	18.7 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...	86400.0 s	10.7 KiB
config.aps.amazon-adsystem.com/configs/4fbba76f-7987-4fa2-9733-c27eb3a2170b	3600.0 s	2.3 KiB
ads.adthrive.com/builds/customizations/6661dd7712e1ac035b611f89.js	0.0 ms	1.5 KiB
js.hs-scripts.com/47062935.js	90.0 s	1.1 KiB
ads.adthrive.com/sites/6661dd7712e1ac035b611f89/ads.min.css	3600.0 s	1007 B
/collect?v=2&fmt=js&pid=4435738&time=1776812826811&url=ht...	0.0 ms	691 B
/tr/?id=1133649460836214&ev=PageView&dl=https%3A%2F%2Fint...	0.0 ms	19 B
/tr/?id=1485557105695108&ev=PageView&dl=https%3A%2F%2Fint...	0.0 ms	16 B

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

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

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.

URL	Total CPU Time	Script Evaluation	Script Parse
Unattributable	1.4 s	118 ms	0.0 ms
interestingengineering.com/	889 ms	94 ms	21 ms
interestingengineering.com/_next/static/chunks/107yos3u0uadk.js	555 ms	487 ms	11 ms
/delivery/customdata/bV8xLndfODY2ODUucl9HRFBSLmxfZW4uZF8z...	382 ms	354 ms	4.0 ms
/builds/core/3ec6742/es2018/js/adthrive.min.js?deployment...	207 ms	130 ms	62 ms
js.hs-analytics.net/analytics/1776812700000/47062935.js	197 ms	129 ms	4.1 ms
www.googletagmanager.com/gtm.js?id=GTM-KZVMHRW9	191 ms	164 ms	21 ms
scripts.clarity.ms/0.8.59/clarity.js	184 ms	158 ms	7.1 ms
/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31...	170 ms	142 ms	23 ms
www.googletagmanager.com/gtag/js?id=G-7BEHH4VG6K&cx=c&gtm=4e64h1h1	167 ms	126 ms	24 ms
www.googletagmanager.com/gtag/js?id=G-0Y8RGJWRV7&cx=c&gtm=4e64h1	141 ms	119 ms	20 ms
cdn.p-n.io/pushly-sdk.min.js?domain_key=2lGk6df1rSYyOtl0K802tDONHmW3wgIpo68Z	141 ms	118 ms	6.7 ms
/sites/6661dd7712e1ac035b611f89/ads.min.js?referrer=https...	123 ms	88 ms	4.8 ms
www.googletagmanager.com/gtag/js?id=AW-674765182&cx=c&gtm=4e64h1h1	121 ms	89 ms	16 ms
ads.adthrive.com/builds/core/3ec6742/gdpr/vendor/prebid/es2018/prebid.min.js	107 ms	78 ms	24 ms
interestingengineering.com/cdn-cgi/challenge-platform/scripts/jsd/main.js	105 ms	101 ms	1.1 ms
interestingengineering.com/js/recovery.js	65 ms	55 ms	0.8 ms
/signals/config/1133649460836214?v=2.9.303&r=stable&domai...	60 ms	49 ms	10 ms
connect.facebook.net/en_US/fbevents.js	58 ms	44 ms	14 ms
c.aps.amazon-adsystem.com/apstag.js	55 ms	38 ms	14 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.

Category	Time Spent
Script Evaluation	3.2 s
Other	1.5 s
Style & Layout	564 ms
Script Parsing & Compilation	410 ms
Rendering	140 ms
Parse HTML & CSS	121 ms
Garbage Collection	83 ms

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 ▾

Source: Google web.dev / Lighthouse

Estimated savings: 0.0 ms 926.9 KiB

URL	Transfer Size	Est Savings
/builds/core/3ec6742/es2018/js/adthrive.min.js?deployment...	368.6 KiB	160.3 KiB
/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31...	187.4 KiB	129.3 KiB
ads.adthrive.com/builds/core/3ec6742/gdpr/vendor/prebid/es2018/prebid.min.js	172.3 KiB	126.2 KiB
www.googletagmanager.com/gtag/js?id=G-0Y8RGJWRV7&cx=c&gtm=4e64h1	172.7 KiB	68.0 KiB
www.googletagmanager.com/gtag/js?id=G-7BEHH4VG6K&cx=c&gtm=4e64h1h1	175.7 KiB	66.7 KiB
www.googletagmanager.com/gtag/js?id=AW-674765182&cx=c&gtm=4e64h1h1	146.1 KiB	60.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-WKW2TKP	155.0 KiB	60.0 KiB
interestingengineering.com/_next/static/chunks/119uhjrnv1x.4.js	65.0 KiB	56.9 KiB
c.aps.amazon-adsystem.com/apstag.js	77.9 KiB	50.4 KiB
cdn.consentmanager.net/delivery/js/cmp_final.min.js	100.4 KiB	36.6 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	33.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-KZVMHRW9	80.1 KiB	31.9 KiB
/public/client_js/capiParamBuilder/clientParamBuilder.bun...	62.8 KiB	25.5 KiB
interestingengineering.com/_next/static/chunks/107yos3u0uadk.js	68.9 KiB	20.9 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	3.5 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	3.3 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.7 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.5 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.5 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.3 MiB
/_next/image?url=https%3A%2F%2Fcms.interestingengineering...	1.3 MiB

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

●LCP request discovery

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●User Timing marks and measures 20 user timings

●Avoid long main-thread tasks 19 long tasks found

●Image elements have explicit `width` and `height`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 100 ms

●Server Backend Latencies 500 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 10 ms

●Avoid large layout shifts 3 layout shifts found

○INP breakdown

○Avoid non-composited animations

Accessibility

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
Manage Your Privacy `div#cmpboxcontent > div.cmpboxtxtdiv > h1#cmpboxheadline1 > span`
Accept All `div.cmpboxbtns > span#cmpwelcomebtnyes > a.cmpboxbtn > span#cmpbntyestxt`
Sign In `nav.t-hidden > div.t-max-w-[1440px] > div.t-flex > a.t-text-white`
Energy `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
AI and Robotics `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
AI and Robotics `div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-hidden > div.t-mt-[12px] > div.t-flex > a.t-text-[#027FC0]`
AI and Robotics `div.t-block > div.t-pt-[12px] > div.t-flex > a.t-text-[#027FC0]`
AI and Robotics `div.t-block > div.t-pt-[12px] > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.category-links > div.t-flex > span.t-font-normal`
Energy `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
Inside China `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
Beyond Earth `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.category-links > div.t-flex > span.t-font-normal`
Space `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
Transportation `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.category-links > div.t-flex > span.t-font-normal`
Space `div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]`
Innovation `div.t-relative > div.t-mt-[12px] > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-relative > div.t-mt-[12px] > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-relative > div.t-mt-[12px] > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-relative > div.t-mt-[12px] > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-relative > div.t-mt-[12px] > div.t-flex > a.t-text-[#027FC0]`
AI and Robotics `div.t-relative > div.t-mt-[12px] > div.t-flex > a.t-text-[#027FC0]`
Inside China `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Beyond Earth `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-self-stretch > div.t-inline-flex > div.t-flex > span.t-font-normal`
Space `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
AI Logs `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-self-stretch > div.t-inline-flex > div.t-flex > span.t-font-normal`
AI and Robotics `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Inside China `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-self-stretch > div.t-inline-flex > div.t-flex > span.t-font-normal`
Transportation `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Beyond Earth `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-self-stretch > div.t-inline-flex > div.t-flex > span.t-font-normal`
Space `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.t-inline-flex > div.t-flex > span.t-font-normal`
Energy `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.t-inline-flex > div.t-flex > span.t-font-normal`
Space `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Case Studies `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Research `div.t-inline-flex > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Interviews `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-self-stretch > div.t-inline-flex > div.t-flex > span.t-font-normal`
Science `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Interviews `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-self-stretch > div.t-inline-flex > div.t-flex > span.t-font-normal`
Space `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Interviews `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-self-stretch > div.t-inline-flex > div.t-flex > span.t-font-normal`
Science `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Interviews `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-self-stretch > div.t-inline-flex > div.t-flex > span.t-font-normal`
Science `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Interviews `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-self-stretch > div.t-inline-flex > div.t-flex > span.t-font-normal`
Energy `div.t-self-stretch > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Inventor `div.t-w-44 > div.t-self-stretch > div.t-inline-flex > div.t-justify-start`
Engineer `div.t-w-44 > div.t-self-stretch > div.t-inline-flex > div.t-justify-start`
Civil Engineer `div.t-w-44 > div.t-self-stretch > div.t-inline-flex > div.t-justify-start`
Engineer `div.t-w-44 > div.t-self-stretch > div.t-inline-flex > div.t-justify-start`
Civil Engineer `div.t-w-44 > div.t-self-stretch > div.t-inline-flex > div.t-justify-start`
Innovation `div.t-w-96 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Mrigakshi Dixit `div.t-self-stretch > div.t-w-96 > div.t-inline-flex > a.t-justify-start`
Innovation `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Innovation `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Innovation `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.t-inline-flex > div.t-flex > span.t-font-normal`
Science `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Innovation `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.t-inline-flex > div.t-flex > span.t-font-normal`
Science `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Sign up for free `div.t-w-full > div.t-w-full > div.t-w-full > button.t-w-full`
Gaming `div.t-w-96 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-w-96 > div.t-inline-flex > div.t-flex > span.t-font-normal`
Culture `div.t-w-96 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Aamir Khollam `div.t-self-stretch > div.t-w-96 > div.t-inline-flex > a.t-justify-start`
Culture `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Culture `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Culture `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.t-inline-flex > div.t-flex > span.t-font-normal`
AI and Robotics `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Culture `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-w-96 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Aamir Khollam `div.t-self-stretch > div.t-w-96 > div.t-inline-flex > a.t-justify-start`
Military `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-w-96 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Neetika Walter `div.t-self-stretch > div.t-w-96 > div.t-inline-flex > a.t-justify-start`
Energy `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Space `div.t-w-96 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Mrigakshi Dixit `div.t-self-stretch > div.t-w-96 > div.t-inline-flex > a.t-justify-start`
Space `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Space `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Space `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
Space `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
and `div.t-flex-1 > div.t-inline-flex > div.t-flex > span.t-font-normal`
Science `div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]`
IE Awards `div.t-flex > div.t-hidden > div.t-flex > span.t-text-[#6C757D]`
Update Privacy Preferences `body.min-h-screen > div.adthrive-comscore > div.adthrive-privacy-preferences > a`

These are opportunities to improve the legibility of your content.

Navigation

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
LATEST `div.t-grid > aside.t-order-7 > div.t-flex > h3.home-heading`

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
Innovation `div.t-relative > div.t-mt-[12px] > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-relative > div.t-mt-[12px] > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-relative > div.t-mt-[12px] > div.t-flex > a.t-text-[#027FC0]`
Energy `div.t-relative > div.t-mt-[12px] > div.t-flex > a.t-text-[#027FC0]`
Military `div.t-relative > div.t-mt-[12px] > div.t-flex > a.t-text-[#027FC0]`
AI and Robotics `div.t-relative > div.t-mt-[12px] > div.t-flex > a.t-text-[#027FC0]`
Neetika Walter `div.t-flex-1 > div.t-flex-1 > div.t-inline-flex > a.t-justify-start`

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

●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.

●`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

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

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

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

●Links are distinguishable without relying on color.

●Links have a discernible name

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

●`[lang]` attributes have a valid value

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

○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

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

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

○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.

○`<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.

Best Practices

Trust and Safety

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source
cdn.p-n.io/pushly-sdk.min.js?domain_key=2lGk6df1rSYyOtl0K802tDONHmW3wgIpo68Z

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.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
Critical minerals and rare earth supply `div.t-w-full > div.t-w-full > div.t-w-44 > img.t-w-44`	/wp-content/uploads/2026/03/Screenshot-2026-03-30-at-11.1...	174 x 240 (0.72)	906 x 1272 (0.71)

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
SharedStorage	interestingengineering.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.	interestingengineering.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge	interestingengineering.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
AttributionReporting	connect.facebook.net/en_US/fbevents.js line 279, col 769
Topics	ads.adthrive.com/builds/core/3ec6742/gdpr/vendor/prebid/es2018/prebid.min.js line 62, col 181510

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation 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 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

100

SEO

○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`

Results for https://interestingengineering.com

Site Health

How you compare

Top Priorities (5)

Fix Priority Matrix

Quick Wins

Strategic

Easy Improvements

Deprioritize

What fixing these means

Conversion Barriers

Speed (2)

Trust (2)

Usability (1)

Navigation (1)

Return on Investment

Investment

Monthly returns

Regulatory risk avoided

Estimated Remediation Cost

Cost by category

Cost by effort level

What Inaction Is Costing You

Compliance Risk

Bandwidth Waste

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Contrast

Navigation

Best Practices

Trust and Safety

User Experience

General

SEO

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Contrast

Navigation

Best practices

Best Practices

Trust and Safety

User Experience

General

SEO

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