Performance
· 17 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.
5.34 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
7.94 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
151 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
6.53 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.
8.05 s
Page Load Progression
BPage Weight Budget1.1 MB transferred, 101 requestsREVIEW
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.
Source: web.dev
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
BThird-Party Impact40% third-party, 0 ms blockingREVIEW
CImage OptimizationAction23 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CJS Execution CostAction1802ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 459ms | 14ms | 0ms | 3rd |
| https://opensource.org/ | 423ms | 38ms | 10ms | 1st |
| https://opensource.org/cdn-cgi/challenge-platform/scripts/jsd/main.js | 289ms | 195ms | 2ms | 1st |
| https://opensource.org/wp-content/plugins/coblocks/dist/js/coblocks-tinyswiper-initializer.js?ver=3.1.17 | 280ms | 32ms | 1ms | 1st |
| https://opensource.org/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-search/build/instant-search/jp-search.defaultVendors.js?minify=false&ver=12bb4b11004800566abc | 104ms | 96ms | 7ms | 1st |
| https://c0.wp.com/c/6.9.4/wp-includes/js/jquery/jquery.min.js | 72ms | 56ms | 7ms | 3rd |
| https://opensource.org/wp-content/themes/osi/assets/js/build/theme.js?ver=1724798073 | 71ms | 29ms | 1ms | 1st |
| https://opensource.org/wp-content/plugins/events-manager/includes/js/events-manager.js?ver=7.2.3.1 | 54ms | 17ms | 37ms | 1st |
| https://opensource.org/wp-content/uploads/136772de92/pa-u3bOjrGiXDsYr3K8pYyfj.js | 50ms | 20ms | 1ms | 1st |
BJS Bundles39 scripts, 107 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://opensource.org/wp-content/plugins/events-manager/includes/js/events-manager.js?ver=7.2.3.1 | 118 KB | 107 KB (91%) | ✗ | 1st |
| https://opensource.org/wp-content/plugins/gutenberg/build/scripts/hooks/index.min.js?ver=7496969728ca0f95732d | 2 KB | — | ✓ | 1st |
| https://opensource.org/wp-content/plugins/contact-form-7/includes/swv/js/index.js?ver=6.1.5 | 4 KB | — | ✓ | 1st |
| https://c0.wp.com/c/6.9.4/wp-includes/js/jquery/ui/mouse.min.js | 1 KB | — | ✓ | 3rd |
| https://c0.wp.com/c/6.9.4/wp-includes/js/jquery/ui/sortable.min.js | 7 KB | — | ✓ | 3rd |
| https://c0.wp.com/c/6.9.4/wp-includes/js/jquery/ui/datepicker.min.js | 11 KB | — | ✓ | 3rd |
| https://c0.wp.com/c/6.9.4/wp-includes/js/jquery/ui/resizable.min.js | 6 KB | — | ✓ | 3rd |
| https://c0.wp.com/c/6.9.4/wp-includes/js/jquery/ui/draggable.min.js | 5 KB | — | ✓ | 3rd |
| https://c0.wp.com/c/6.9.4/wp-includes/js/jquery/ui/controlgroup.min.js | 2 KB | — | ✓ | 3rd |
| https://c0.wp.com/c/6.9.4/wp-includes/js/jquery/ui/checkboxradio.min.js | 2 KB | — | ✓ | 3rd |
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
BPage Weight Inventory101 resources · 1.1 MB · 107 KB savings availableREVIEW
~107.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 101 resources | 1.1 MiB | ||||||
A+Text CompressionAll text resources are compressedPASS
A+Font Loading3 fonts (71 KB)PASS
Web fonts
3
71 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints4 hints, 0 missing preconnectsPASS
Current Resource Hints
4 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
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=240 (4 minutes)PASS
max-age=240, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| max-age | 240 | Cache for 4 minutes |
| must-revalidate | — | Must recheck with server after expiry |
Network Waterfall101 requests over 4508msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 459ms | 0 KB | — | $3/mo | Costly |
c0.wp.com c0.wp.com | Other | 72ms | 31 KB | — | $0/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 459ms and costs ~$3/month
Unattributable takes 459ms 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