https://shubham-tripathi-portfolio.ai.studio

Performance

· 22 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

100

Accessibility

100

Best Practices

100

SEO

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

2.16 s

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

2.34 s

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

1.29 s

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

0.135

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

5.23 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.

3.69 s

Page Load Progression

1.0 s

2.0 s

3.0 s

4.0 s

5.0 s

6.0 s

7.0 s

8.0 s

Checks

11 PASS 6 REVIEW 2 FIX

JS Execution Cost

Action

3028ms total JS execution

FIX

3028ms total JS execution

https://shubham-tripathi-portfolio.ai.studio/asset...: 2645ms CPU time

https://shubham-tripathi-portfolio.ai.studio/: 322ms CPU time

Unattributable: 61ms CPU time

Main Thread Breakdown

Other 81% Style & Layout 8% Script Evaluation 7% Rendering 4%

Script	Total	Scripting	Parse/Compile	Party
https://shubham-tripathi-portfolio.ai.studio/assets/index-CAjh722H.js	2645ms	204ms	0ms	1st
https://shubham-tripathi-portfolio.ai.studio/	322ms	2ms	0ms	1st
Unattributable	61ms	1ms	0ms	1st

HTTP Caching

Action

no-store (uncacheable)

FIX

no-store (uncacheable)

Cache-Control: no-store prevents all caching

Intentional for dynamic content, but increases server load for every page view.

Got: no-cache, no-store, must-revalidate

Last-Modified header present

Cache-Control

no-cache, no-store, must-revalidate

Directive	Value	Meaning
no-cache	—	Cache but always revalidate first
no-store	—	Never cache this response
must-revalidate	—	Must recheck with server after expiry

Page Weight Budget

1.4 MB transferred, 12 requests

REVIEW

1.4 MB transferred, 12 requests

Page weighs 1.4 MB (1.4 MB transferred)

12 HTTP requests

Estimated 0.29 g CO2 per page load

1.4 MB transferred

12 requests

0.29 g CO2 per page load

Images 867.5 KiB 61%

JavaScript 381.2 KiB 27%

Fonts 91.1 KiB 6%

CSS 67.5 KiB 5%

HTML 10.5 KiB 1%

Other 857 B 0%

0 2.4 MB 4.9 MB

Under budget

Image Optimization

4 images, 0 KB saveable

REVIEW

4 images, 0 KB saveable

All images are well-optimized

4 images 868 KB

0 oversized -0 KB

4 legacy format

0 missing dimensions CLS risk

JS Bundles

1 scripts, 102 KB unused

REVIEW

1 scripts, 102 KB unused

https://shubham-tripathi-portfolio.ai.studio/asset...: 102 KB unused (27%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 102 KB

102 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://shubham-tripathi-portfolio.ai.studio/assets/index-CAjh722H.js	381 KB	102 KB (27%)	✓	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

Document Compression

Action

Document response served uncompressed

REVIEW

Document response served uncompressed

Main HTML response has no Content-Encoding (uncompressed)

The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.

Server-Timing Observability

No Server-Timing header found

REVIEW

No Server-Timing header found

Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.

Page Weight Inventory

12 resources · 1.4 MB · 102 KB savings available

REVIEW

12 resources · 1.4 MB · 102 KB savings available

Page weight 1.4 MB exceeds 1 MB target by 395 KB

Got: 1.4 MB Expected: ≤ 1 MB

~102 KB of savings available

4 third-party resources (7% of weight)

2 resources over 200KB

12 resources · 1.4 MiB · 4 third-party 394.7 KiB over 1MB target

Image 61% · 868.4 KiB

JavaScript 27% · 381.2 KiB

Font 6% · 91.1 KiB

CSS 5% · 67.5 KiB

Document 1% · 10.5 KiB

~102.0 KiB of savings available

Remove unused JavaScript: 102.0 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

12 resources			1.4 MiB

A+

Third-Party Impact

7% third-party, 0 ms blocking

PASS

7% third-party, 0 ms blocking

Third-party code accounts for 7% of page weight (92.6 KiB of 1.4 MiB)

Third-party blocking time is low (0 ms)

93%

First-party Third-party

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

3 fonts (91 KB)

PASS

3 fonts (91 KB)

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

Web fonts

91 KB total

Render-blocking

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

8vIH7w4qzmVxm2BL9G78HEY... woff2 swap

Size 34 KB

Load time 43 ms

Start 3.4 s

Risk FOUT — text flashes from fallback to web font

tDbv2o-flEEny0FZhsfKu5W... woff2 swap

Size 31 KB

Load time 47 ms

Start 3.4 s

Risk FOUT — text flashes from fallback to web font

LDIoaomQNQcsA88c7O9yZ4K... woff2 swap

Size 27 KB

Load time 47 ms

Start 3.4 s

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

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

No optimization needed

PASS

No optimization needed

No resource hint issues

A+

HTTP/3 (QUIC)

HTTP/3 advertised via Alt-Svc

PASS

HTTP/3 advertised via Alt-Svc

HTTP/3 (QUIC) is supported

First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.

A+

LCP Image Preload

LCP preload audit not available

PASS

LCP preload audit not available

LCP image preload audit not available for this scan

A+

Main HTML Cache-Control

Main HTML uses no-store -- correct for sensitive/dynamic content

PASS

Main HTML uses no-store -- correct for sensitive/dynamic content

Got: no-cache, no-store, must-revalidate

A+

Server Response Intelligence

1 server-response signal(s) detected

PASS

1 server-response signal(s) detected

`Last-Modified` present -- timestamp-based conditional GET supported

Consider also setting `ETag` for stronger revalidation -- ETags are content hashes that don't suffer from clock-skew or DST issues. Last-Modified alone is functional for conditional GETs and not a bug.

A+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Google Cloud

Asset Compression

No text asset hosts to measure

INFO

No text asset hosts to measure

No third-party or subdomain host served enough text assets to measure

Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.

Network Waterfall

12 requests over 5712ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Image Optimization

19 images, 0 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

0 KB

19 missing dimensions

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