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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
4
REVIEW
2
PASS
6
INFO
2

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

Mobile Desktop
76
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
73
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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

895 ms

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

2.86 s

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

136 ms

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

0.035

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

2.23 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.

4.94 s

Page Load Progression

767 ms
1.5 s
2.3 s
3.1 s
3.8 s
4.6 s
5.4 s
6.1 s
Checks
14
6 PASS 2 REVIEW 4 FIX
F
Page Weight Budget
Action
4.7 MB transferred, 184 requests
FIX
4.7 MB transferred, 184 requests
Critical::
Page weighs 11.3 MB (4.7 MB transferred)
Warning::
JavaScript is 3.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 3.0 MB
Warning::
Images are 1.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.0 MB
Warning::
184 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.99 g CO2 per page load
4.7 MB / 2.4 MB budget
4.7 MB transferred
184 requests
0.99 g CO2 per page load
JavaScript 3.0 MiB 63%
Images 1.0 MiB 22%
Other 552.6 KiB 11%
Fonts 64.4 KiB 1%
CSS 48.6 KiB 1%
HTML 44.3 KiB 1%
Other 22.1 KiB 0%
Other 1.8 KiB 0%
Other 165 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over 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

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (4.7 MiB of 4.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2818ms total JS execution
FIX
2818ms total JS execution
Warning::
https://www.tigerdata.com/_next/static/chunks/1625...: 924ms CPU time
Warning::
https://www.tigerdata.com/: 331ms CPU time
Warning::
Unattributable: 322ms CPU time
Warning::
https://cmp.osano.com/AzZddaT60OPzDMhS/ecab821a-f2...: 308ms CPU time
Info::
https://www.redditstatic.com/ads/pixel.js?pixel_id...: 169ms CPU time
Warning::
Third-party scripts: 2818ms (100% of total)

Main Thread Breakdown

Script Evaluation 57% Other 21% Style & Layout 9% Script Parsing & Compilation 7% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.tigerdata.com/_next/static/chunks/1625-22adf316ebb49651.js924ms476ms6ms3rd
https://www.tigerdata.com/331ms10ms7ms3rd
Unattributable322ms44ms0ms3rd
https://cmp.osano.com/AzZddaT60OPzDMhS/ecab821a-f266-44a2-b472-c69ded89555c/osano.js308ms268ms21ms3rd
https://www.redditstatic.com/ads/pixel.js?pixel_id=t2_9015w4ze4169ms160ms2ms3rd
https://js.hs-analytics.net/analytics/1775593800000/3409477.js130ms94ms2ms3rd
https://www.googletagmanager.com/gtag/js?id=G-ZTB67HR2PP&cx=c&gtm=4e6461h2128ms99ms11ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PFLX3HP128ms110ms13ms3rd
https://www.tigerdata.com/_next/static/chunks/webpack-9df8f06f6174dc4b.js114ms76ms1ms3rd
https://www.tigerdata.com/_next/static/chunks/3682-d40b87e6d0012e56.js90ms20ms70ms3rd

Showing top 10 of 13 scripts

F
JS Bundles
Action
99 scripts, 1.4 MB unused
FIX
99 scripts, 1.4 MB unused
Warning::
https://www.tigerdata.com/_next/static/chunks/3682...: 998 KB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-ZTB6...: 65 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-114...: 64 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-108...: 64 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-PFL...: 62 KB unused (37%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.4 MB
1458 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.tigerdata.com/_next/static/chunks/3682-d40b87e6d0012e56.js1402 KB998 KB (71%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-ZTB67HR2PP&cx=c&gtm=4e6461h2172 KB65 KB (38%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-11435110917&cx=c&gtm=4e6461h2145 KB64 KB (44%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-10850589437&cx=c&gtm=4e6461h2139 KB64 KB (46%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PFLX3HP168 KB62 KB (37%)✓3rd
https://www.tigerdata.com/_next/static/chunks/8854-ff29815c59bd7716.js43 KB35 KB (89%)✓3rd
https://cdn.segment.com/next-integrations/actions/hubspot-web/f25ba9be5f530adf0e00.js53 KB33 KB (63%)✓3rd
https://www.tigerdata.com/_next/static/chunks/1625-22adf316ebb49651.js73 KB32 KB (46%)✓3rd
https://www.tigerdata.com/_next/static/chunks/9025-8fade26c33ad10c2.js66 KB29 KB (50%)✓3rd
https://www.tigerdata.com/_next/static/chunks/8275-79074640464c6c4c.js34 KB29 KB (93%)✓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

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

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

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

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

B
Image Optimization
26 images, 0 KB saveable
REVIEW
26 images, 0 KB saveable
Info::
All images are well-optimized
26 images 1.0 MB
0 oversized -0 KB
23 legacy format
0 missing dimensions CLS risk
B
HTTP Caching
public, max-age=0, must-revalidate
REVIEW
public, max-age=0, must-revalidate
Info::
Cache-Control header is set
Got: public, max-age=0, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

public, max-age=0, must-revalidate

DirectiveValueMeaning
public—Any cache may store this response
max-age0Cache for 0 seconds
must-revalidate—Must recheck with server after expiry
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
2 fonts (64 KB)
PASS
2 fonts (64 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

64 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s FCP 895 ms LCP 2.9 shttps://www.tigerdata.com/_next/static/media/4cf2300e9c8272f7-s.p.woff24cf2300e9c8272f7-s.p.woff2 https://www.tigerdata.com/_next/static/media/4cf2300e9c8272f7-s.p.woff2 — 30.8 KiB — 0 ms — font-display: swaphttps://www.tigerdata.com/_next/static/media/93f479601ee12b01-s.p.woff293f479601ee12b01-s.p.woff2 https://www.tigerdata.com/_next/static/media/93f479601ee12b01-s.p.woff2 — 33.6 KiB — 0 ms — font-display: swap
4cf2300e9c8272f7-s.p.woff2 woff2 swap
Size 31 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
93f479601ee12b01-s.p.woff2 woff2 swap
Size 34 KB
Load time 0 ms
Start 0 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)
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
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
184 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 2818ms · 2095KB · €45/mo
www.tigerdata.com
Other
Costly
Execution 924ms
Transfer 73 KB
Unused 46%
Monthly Cost €15/mo
www.tigerdata.com
Other
Costly
Execution 331ms
Transfer 44 KB
Monthly Cost €5/mo
Unattributable
Other
Costly
Execution 322ms
Transfer 0 KB
Monthly Cost €5/mo
cmp.osano.com
Other
Costly
Execution 308ms
Transfer 69 KB
Unused 32%
Monthly Cost €5/mo
www.redditstatic.com
Other
Optional
Execution 169ms
Transfer 19 KB
Monthly Cost €3/mo
HubSpot Analytics
Analytics
Optional
Execution 130ms
Transfer 42 KB
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Optional
Execution 128ms
Transfer 172 KB
Unused 38%
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Optional
Execution 128ms
Transfer 168 KB
Unused 37%
Monthly Cost €2/mo
www.tigerdata.com
Other
Optional
Execution 114ms
Transfer 12 KB
Monthly Cost €2/mo
www.tigerdata.com
Other
Optional
Execution 90ms
Transfer 1402 KB
Unused 71%
Monthly Cost €1/mo
Segment
Analytics
Optional
Execution 67ms
Transfer 9 KB
Monthly Cost €1/mo
www.tigerdata.com
Other
Optional
Execution 57ms
Transfer 57 KB
Monthly Cost €1/mo
Microsoft Clarity
Session Replay
Optional
Execution 50ms
Transfer 26 KB
Unused 95%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.tigerdata.com adds 924ms and costs ~€15/month
  • www.tigerdata.com adds 331ms and costs ~€5/month
  • Unattributable adds 322ms and costs ~€5/month
  • cmp.osano.com adds 308ms and costs ~€5/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.tigerdata.com takes 924ms 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

www.tigerdata.com takes 331ms 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

Unattributable takes 322ms 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

cmp.osano.com takes 308ms 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

71% of www.tigerdata.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

95% of Microsoft Clarity'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.

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