Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop

Performance

Accessibility

100

Best Practices

SEO

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

2.84 s

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

5.95 s

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

150 ms

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

0.011

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

3.24 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.

8.48 s

Page Load Progression

375 ms

750 ms

1.1 s

1.5 s

1.9 s

2.2 s

2.6 s

3.0 s

Checks

9 PASS 4 REVIEW 2 FIX

Third-Party Impact

Action

89% third-party, 0 ms blocking

FIX

89% third-party, 0 ms blocking

Third-party code accounts for 89% of page weight (963.2 KiB of 1.1 MiB)

Third-party blocking time is low (0 ms)

89%

First-party Third-party

HTTP Caching

Action

No cache headers

FIX

No cache headers

No Cache-Control header found

Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

Last-Modified header present

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

Page Weight Budget

1.1 MB transferred, 47 requests

REVIEW

1.1 MB transferred, 47 requests

Page weighs 4.3 MB (1.1 MB transferred)

JavaScript is 748 KB — consider code splitting or lazy loading

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Got: 748 KB

47 HTTP requests

Estimated 0.22 g CO2 per page load

1.1 MB transferred

47 requests

0.22 g CO2 per page load

JavaScript 747.6 KiB 69%

HTML 134.3 KiB 12%

Fonts 79.3 KiB 7%

Images 77.3 KiB 7%

CSS 25.9 KiB 2%

Other 17.5 KiB 2%

Other 3.2 KiB 0%

Other 2.0 KiB 0%

0 2.4 MB 4.9 MB

Under budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

JS Execution Cost

Action

1966ms total JS execution

REVIEW

1966ms total JS execution

https://positivepsychology.com/: 1109ms CPU time

Unattributable: 450ms CPU time

https://ads.adthrive.com/builds/core/60ff911/es201...: 335ms CPU time

https://ads.adthrive.com/sites/647a1aa589686a4f7f9...: 72ms CPU time

Third-party scripts: 857ms (44% of total)

Main Thread Breakdown

Other 26% Script Evaluation 23% Style & Layout 19% Script Parsing & Compilation 15% Parse HTML & CSS 12% Rendering 4%

Script	Total	Scripting	Parse/Compile	Party
https://positivepsychology.com/	1109ms	266ms	70ms	1st
Unattributable	450ms	8ms	0ms	3rd
https://ads.adthrive.com/builds/core/60ff911/es2018/js/adthrive.min.js?deployment=2026-04-22-08:rpsc-834:60ff911:4&bucket=flex-36&deliveryFeatures=additiveRaptiveFloors,altsdm,altv2,amazonBetaApstag,consentManagerCMP,cv2,dlc,es2021,hb_crid,i262,ld,nvc,ok,pbis,raptiveFloors,raptiveManualCookieSync,recencyFrequency,reissuingSticky,removeAdHost,rpbsecs,rpr,rrassf,stickyBucketsLocalStorage,stickyV2,switzerlandGdpr,trafficShaping,usdk,ttdSync&siteid=647a1aa589686a4f7f9a442b	335ms	99ms	225ms	3rd
https://ads.adthrive.com/sites/647a1aa589686a4f7f9a442b/ads.min.js?referrer=https%3A%2F%2Fpositivepsychology.com%2F&cb=3	72ms	50ms	13ms	3rd

JS Bundles

Action

11 scripts, 262 KB unused

REVIEW

11 scripts, 262 KB unused

https://ads.adthrive.com/builds/core/60ff911/es201...: 262 KB unused (69%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 262 KB

262 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://ads.adthrive.com/builds/core/60ff911/es2018/js/adthrive.min.js?deployment=2026-04-22-08:rpsc-834:60ff911:4&bucket=flex-36&deliveryFeatures=additiveRaptiveFloors,altsdm,altv2,amazonBetaApstag,consentManagerCMP,cv2,dlc,es2021,hb_crid,i262,ld,nvc,ok,pbis,raptiveFloors,raptiveManualCookieSync,recencyFrequency,reissuingSticky,removeAdHost,rpbsecs,rpr,rrassf,stickyBucketsLocalStorage,stickyV2,switzerlandGdpr,trafficShaping,usdk,ttdSync&siteid=647a1aa589686a4f7f9a442b	378 KB	262 KB (69%)	✓	3rd
https://positivepsychology.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js	1 KB	—	✓	1st
https://positive.b-cdn.net/wp-content/cache/min/1/wp-content/themes/positivepsychology/dist/scripts/top-banner.js?ver=1776850781	1 KB	—	✓	3rd
https://positive.b-cdn.net/wp-content/plugins/wp-rocket/assets/js/lazyload/17.8.3/lazyload.min.js	4 KB	—	✓	3rd
https://ads.adthrive.com/sites/647a1aa589686a4f7f9a442b/ads.min.js?referrer=https%3A%2F%2Fpositivepsychology.com%2F&cb=3	30 KB	—	✓	3rd
https://ads.adthrive.com/abd/abd.js	1 KB	—	✓	3rd
https://f.vimeocdn.com/p/4.46.43/js/player.module.js	212 KB	—	✓	3rd
https://f.vimeocdn.com/p/4.46.43/js/vendor.module.js	93 KB	—	✓	3rd
https://www.gstatic.com/cv/js/sender/v1/cast_sender.js?loadCastFramework=1	2 KB	—	✓	3rd
https://www.gstatic.com/cast/sdk/libs/sender/1.0/cast_framework.js	12 KB	—	✓	3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Page Weight Inventory

47 resources · 1.1 MB · 262 KB savings available

REVIEW

47 resources · 1.1 MB · 262 KB savings available

Page weight 63 KB over 1MB target

Got: 1.1 MB Expected: ≤ 1 MB

~262 KB of savings available

45 third-party resources (89% of weight)

2 resources over 200KB

47 resources · 1.1 MiB · 45 third-party 63.2 KiB over 1MB target

JavaScript 69% · 748.7 KiB

Document 12% · 134.3 KiB

Image 7% · 80.5 KiB

Font 7% · 79.3 KiB

CSS 2% · 25.9 KiB

Other 2% · 18.4 KiB

~262.4 KiB of savings available

Remove unused JavaScript: 262.4 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

47 resources			1.1 MiB

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

Image Optimization

22 images, 0 KB saveable

PASS

22 images, 0 KB saveable

All images are well-optimized

22 images 77 KB

0 oversized -0 KB

2 legacy format

0 missing dimensions CLS risk

A+

Font Loading

4 fonts (79 KB)

PASS

4 fonts (79 KB)

4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

79 KB total

Render-blocking

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

S6uyw4BMUTPHjx4wXiWtFCc... woff2 swap

Size 14 KB

Load time 72 ms

Start 238 ms

Risk FOUT — text flashes from fallback to web font

S6u9w4BMUTPHh6UVSwiPGQ3... woff2 swap

Size 14 KB

Load time 72 ms

Start 239 ms

Risk FOUT — text flashes from fallback to web font

ppcom.ttf ttf swap

Size 15 KB

Load time 11 ms

Start 458 ms

Risk FOUT — text flashes from fallback to web font

Convert to woff2 for ~30% smaller file size

0QIvMX1D_JOuMwr7I_FMl_E... woff2 swap

Size 37 KB

Load time 7 ms

Start 459 ms

Risk FOUT — text flashes from fallback to web font

Optimization checklist

Preload critical fonts (priority=high)
Use woff2 format for all fonts
Set font-display to swap, optional, or fallback
Subset large fonts (≤100 KB each)

Fixing the unchecked items could save ~4 KB and ~8 ms

A+

Resource Caching

All resources properly cached

PASS

All resources properly cached

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

16 hints, 0 missing preconnects

PASS

16 hints, 0 missing preconnects

Page uses 16 resource hint(s)

Current Resource Hints

preconnect

preload

dns-prefetch

prefetch

—

16 resource hints configured

A+

Render-Blocking Resources

No render-blocking resources detected

PASS

No render-blocking resources detected

No render-blocking resources detected in <head>

A+

Third-Party Resources

No third-party resources detected

PASS

No third-party resources detected

A+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall

47 requests over 2036ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

Per-script blocking time, transfer cost, and cache headers

INFO

44% of JavaScript execution is third-party

First-party Third-party 857ms · 408KB · $5/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
Unattributable Unattributable	Other	450ms	0 KB	—	$3/mo	Costly
ads.adthrive.com ads.adthrive.com	Other	335ms	378 KB	69%	$2/mo	Costly
ads.adthrive.com ads.adthrive.com	Other	72ms	30 KB	—	$0/mo	Optional

Unattributable

Other

Costly

Execution 450ms

Transfer 0 KB

Monthly Cost $3/mo

ads.adthrive.com

Other

Costly

Execution 335ms

Transfer 378 KB

Unused 69%

Monthly Cost $2/mo

ads.adthrive.com

Other

Optional

Execution 72ms

Transfer 30 KB

Monthly Cost $0/mo

These scripts may cost more than they're worth

Unattributable adds 450ms and costs ~$3/month
ads.adthrive.com adds 335ms and costs ~$2/month

44% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

Unattributable takes 450ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

ads.adthrive.com takes 335ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

69% of ads.adthrive.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.