https://sentry.io
Performance
· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
83
GRADE
B
FIX
2
REVIEW
3
PASS
8
INFO
2
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
95
92
96
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
787 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.35 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
14 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.03 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.
1.39 s
Page Load Progression
478 ms
956 ms
1.4 s
1.9 s 2.4 s
2.9 s 3.3 s
3.8 sChecks
158 PASS 3 REVIEW 2 FIX
DJS Execution CostAction2185ms total JS executionFIX
JS Execution Cost
Action2185ms total JS execution
2185ms total JS execution
Warning::
https://sentry.io/_astro/Welcome.astro_astro_type_...: 1696ms CPU time
Info::
https://sentry.io/welcome/: 205ms CPU time
Info::
Unattributable: 193ms CPU time
Info::
https://plausible.io/js/script.tagged-events.js: 92ms CPU time
Info::
Third-party scripts: 284ms (13% of total)
Main Thread Breakdown
Other 55% Script Evaluation 34% Style & Layout 7%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://sentry.io/_astro/Welcome.astro_astro_type_script_index_0_lang.CxHIClDC.js | 1696ms | 692ms | 0ms | 1st |
| https://sentry.io/welcome/ | 205ms | 31ms | 5ms | 1st |
| Unattributable | 193ms | 24ms | 0ms | 3rd |
| https://plausible.io/js/script.tagged-events.js | 92ms | 5ms | 0ms | 3rd |
FHTTP CachingActionNo cache headersFIX
HTTP Caching
ActionNo cache headers
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.9 MB transferred, 55 requestsREVIEW
Page Weight Budget
Action1.9 MB transferred, 55 requests
1.9 MB transferred, 55 requests
Info::
Page weighs 3.4 MB (1.9 MB transferred)
Info::
55 HTTP requests
Info::
Estimated 0.39 g CO2 per page load
1.9 MB transferred
55 requests
0.39 g CO2 per page load
Images 848.5 KiB 44%
Other 655.8 KiB 34%
HTML 166.7 KiB 9%
JavaScript 109.4 KiB 6%
Fonts 103.7 KiB 5%
CSS 30.9 KiB 2%
Other 8.0 KiB 0%
Other 140 B 0%
0 2.4 MB 4.9 MB
Approaching limit
BImage Optimization27 images, 0 KB saveableREVIEW
Image Optimization
27 images, 0 KB saveable
27 images, 0 KB saveable
Warning::
https://sentry.io/_astro/ufo-abduction-image.CCCwe... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
27 images 848 KB
0 oversized -0 KB
11 legacy format
1 missing dimensions CLS risk
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CPage Weight InventoryAction55 resources · 1.9 MB · 23 KB savings availableREVIEW
Page Weight Inventory
Action55 resources · 1.9 MB · 23 KB savings available
55 resources · 1.9 MB · 23 KB savings available
Warning::
Page weight 899 KB over 1MB target
Got: 1.9 MB Expected: ≤ 1 MB
Info::
5 third-party resources (27% of weight)
Info::
2 resources over 200KB
55 resources · 1.9 MiB · 5 third-party 899.2 KiB over 1MB target
Image 44% · 854.9 KiB
Other 34% · 656.0 KiB
Document 9% · 168.3 KiB
JavaScript 6% · 109.4 KiB
Font 5% · 103.7 KiB
CSS 2% · 30.9 KiB
~23.3 KiB of savings available
Remove unused JavaScript: 23.3 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 55 resources | 1.9 MiB | ||||||
AThird-Party Impact27% third-party, 0 ms blockingPASS
Third-Party Impact
27% third-party, 0 ms blocking
27% third-party, 0 ms blocking
Info::
Third-party code accounts for 27% of page weight (524.7 KiB of 1.9 MiB)
Info::
Third-party blocking time is low (0 ms)
73%
27%
First-party Third-party
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+Font Loading6 fonts (104 KB)PASS
Font Loading
6 fonts (104 KB)
6 fonts (104 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
6
104 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
rubik-latin-regular.woff woff swap
Size 23 KB
Load time 165 ms
Start 337 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
rubik-latin-italic.woff2 woff2 swap
Size 18 KB
Load time 164 ms
Start 338 ms
Risk FOUT — text flashes from fallback to web font
dammitsansv0.2-bold.otf otf swap
Size 8 KB
Load time 173 ms
Start 338 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
rubik-latin-regular.woff2 woff2 swap
Size 18 KB
Load time 177 ms
Start 609 ms
Risk FOUT — text flashes from fallback to web font
rubik-latin-500.woff2 woff2 swap
Size 18 KB
Load time 149 ms
Start 609 ms
Risk FOUT — text flashes from fallback to web font
rubik-latin-500italic.w... woff2 swap
Size 18 KB
Load time 149 ms
Start 610 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 ~9 KB and ~18 ms
A+JS Bundles12 scripts, 23 KB unusedPASS
JS Bundles
12 scripts, 23 KB unused
12 scripts, 23 KB unused
Warning::
https://sentry.io/_astro/index.BSQljMam.js: 23 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 23 KB
23 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://sentry.io/_astro/index.BSQljMam.js | 48 KB | 23 KB (49%) | ✓ | 1st |
| https://sentry.io/_astro/Link.astro_astro_type_script_index_0_lang.B5kEYiND.js | 0 KB | — | ✓ | 1st |
| https://plausible.io/js/script.tagged-events.js | 2 KB | — | ✓ | 3rd |
| https://sentry.io/_astro/GettingStarted.astro_astro_type_script_index_0_lang.BTWxF49p.js | 0 KB | — | ✓ | 1st |
| https://sentry.io/_astro/MarketoForm.CKHgLosH.js | 5 KB | — | ✓ | 1st |
| https://sentry.io/_astro/client.DeAwy1AW.js | 1 KB | — | ✓ | 1st |
| https://sentry.io/_astro/Welcome.astro_astro_type_script_index_0_lang.CxHIClDC.js | 45 KB | — | ✓ | 1st |
| https://sentry.io/_astro/link-decorator.BP7leAsv.js | 3 KB | — | ✓ | 1st |
| https://sentry.io/_astro/plausible.C3o9j7JC.js | 0 KB | — | ✓ | 1st |
| https://sentry.io/_astro/jsx-runtime.9DypCmAh.js | 1 KB | — | ✓ | 1st |
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
A+Resource CachingAll resources properly cachedPASS
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource HintsNo optimization neededPASS
Resource Hints
No optimization needed
No optimization needed
Info::
No resource hint issues
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Google Cloud
Network Waterfall55 requests over 1490msINFO
Network Waterfall
55 requests over 1490ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
13% of JavaScript execution is third-party
First-party Third-party 284ms · 2KB · $5/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 193ms | 0 KB | — | $3/mo | Optional |
Plausible Analytics plausible.io | Analytics | 92ms | 2 KB | — | $2/mo | Optional |
Unattributable
Other
Execution 193ms
Transfer 0 KB
Monthly Cost $3/mo
Plausible Analytics
Analytics
Execution 92ms
Transfer 2 KB
Monthly Cost $2/mo
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.