Performance
· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
405 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.92 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
202 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.038
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.24 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.
3.84 s
Page Load Progression
DPage Weight BudgetAction2.2 MB transferred, 142 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DPage Weight InventoryAction142 resources · 2.2 MB · 229 KB savings availableFIX
~229.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 142 resources | 2.2 MiB | ||||||
BImage Optimization75 images, 0 KB saveableREVIEW
CJS Execution CostAction1903ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://donorbox.org/ | 551ms | 25ms | 3ms | 1st |
| Unattributable | 438ms | 14ms | 0ms | 3rd |
| https://js.hs-analytics.net/analytics/1776816600000/7947408.js | 217ms | 146ms | 4ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NWL3C83 | 176ms | 147ms | 24ms | 3rd |
| https://donorbox.org/cdn-cgi/challenge-platform/scripts/jsd/main.js | 149ms | 141ms | 3ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-H43BHHEK3F&cx=c>m=4e64h1 | 129ms | 106ms | 21ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-659916399&cx=c>m=4e64h1 | 95ms | 78ms | 16ms | 3rd |
| https://connect.facebook.net/signals/config/698276608769714?v=2.9.303&r=stable&domain=donorbox.org&hme=97937018cefade17726f0472876fc101316b2ce9008a35a6a5a7977d7436151a&ex_m=104%2C205%2C154%2C22%2C72%2C73%2C145%2C68%2C67%2C11%2C162%2C90%2C16%2C138%2C127%2C39%2C75%2C78%2C134%2C159%2C164%2C8%2C4%2C5%2C7%2C6%2C3%2C91%2C101%2C165%2C170%2C219%2C62%2C186%2C187%2C55%2C276%2C30%2C74%2C231%2C230%2C229%2C23%2C33%2C103%2C61%2C10%2C63%2C97%2C98%2C99%2C105%2C130%2C31%2C29%2C132%2C133%2C129%2C128%2C155%2C76%2C158%2C156%2C157%2C50%2C60%2C123%2C15%2C161%2C45%2C263%2C264%2C262%2C26%2C27%2C28%2C48%2C146%2C77%2C112%2C18%2C20%2C44%2C40%2C42%2C41%2C83%2C92%2C96%2C110%2C144%2C147%2C46%2C111%2C24%2C21%2C119%2C69%2C36%2C149%2C148%2C150%2C141%2C139%2C25%2C35%2C59%2C109%2C160%2C70%2C17%2C152%2C114%2C81%2C66%2C19%2C85%2C86%2C116%2C84%2C136%2C135%2C34%2C278%2C293%2C212%2C201%2C202%2C200%2C296%2C288%2C52%2C213%2C107%2C131%2C80%2C121%2C54%2C47%2C49%2C113%2C120%2C126%2C58%2C64%2C151%2C115%2C37%2C32%2C53%2C56%2C100%2C163%2C1%2C124%2C14%2C122%2C12%2C2%2C57%2C93%2C65%2C118%2C89%2C88%2C166%2C167%2C94%2C95%2C9%2C125%2C102%2C51%2C142%2C87%2C79%2C71%2C117%2C106%2C43%2C143%2C0%2C82%2C137%2C140%2C153%2C38%2C108%2C13%2C168 | 94ms | 84ms | 9ms | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 56ms | 41ms | 14ms | 3rd |
CJS BundlesAction31 scripts, 229 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-H43BHHEK3F&cx=c>m=4e64h1 | 174 KB | 69 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-659916399&cx=c>m=4e64h1 | 146 KB | 65 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NWL3C83 | 157 KB | 64 KB (41%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 32 KB (33%) | ✓ | 3rd |
| https://js.hs-analytics.net/analytics/1776816600000/7947408.js | 42 KB | — | ✓ | 3rd |
| https://script.crazyegg.com/pages/scripts/0089/9758.js | 3 KB | — | ✓ | 3rd |
| https://donorbox-www.herokuapp.com/gdpr_consent_window.js | 2 KB | — | ✓ | 3rd |
| https://cdn.kiflo.com/k.js | 4 KB | — | ✓ | 3rd |
| https://diffuser-cdn.app-us1.com/diffuser/diffuser.js | 8 KB | — | ✓ | 3rd |
| https://donorbox.org/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js? | 13 KB | — | ✓ | 1st |
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
AThird-Party Impact40% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (538 KB)PASS
Web fonts
6
538 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 ~105 KB and ~210 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
A+HTTP Cachingmax-age=60 (1 minute)PASS
max-age=60, public, must-revalidate, s-maxage=900
| Directive | Value | Meaning |
|---|---|---|
| max-age | 60 | Cache for 1 minute |
| public | — | Any cache may store this response |
| must-revalidate | — | Must recheck with server after expiry |
| s-maxage | 900 | CDN caches for 15 minutes |
Network Waterfall142 requests over 3042msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 438ms | 0 KB | — | €8/mo | Costly |
HubSpot Analytics js.hs-analytics.net | Analytics | 217ms | 42 KB | — | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 176ms | 157 KB | 41% | €3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 129ms | 174 KB | 40% | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 95ms | 146 KB | 44% | €2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 94ms | 47 KB | — | €2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 56ms | 97 KB | 33% | €1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 438ms and costs ~€8/month
- HubSpot Analytics adds 217ms and costs ~€4/month
63% of JavaScript execution time comes from third-party scripts.
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 438ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
HubSpot Analytics takes 217ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev