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https://linkr.bio

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
99
GRADE
A+
FIX
0
REVIEW
0
PASS
15
INFO
2

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

Mobile Desktop
95
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.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
91
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.

782 ms

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

1.82 s

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

0 ms

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

0.137

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

782 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

1.82 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
17
15 PASS
A+
Page Weight Budget
184 KB transferred, 3 requests
PASS
184 KB transferred, 3 requests
Info::
Page weighs 186 KB (184 KB transferred)
Info::
3 HTTP requests
Info::
Estimated 0.04 g CO2 per page load
184 KB / 2.4 MB budget
184 KB transferred
3 requests
0.04 g CO2 per page load
Images 182.9 KiB 99%
HTML 1.2 KiB 1%
Other 147 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
No third-party resources
PASS
No third-party resources
Info::
No third-party resources detected
No third-party resources detected — all resources are first-party.
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
Image Optimization
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Warning::
https://linkr.bio/img_v3.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
1 images 183 KB
0 oversized -0 KB
1 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

A+
JS Execution Cost
82ms total JS execution
PASS
82ms total JS execution
Info::
Unattributable: 82ms CPU time
Warning::
Third-party scripts: 82ms (100% of total)

Main Thread Breakdown

Other 70% Style & Layout 16% Script Evaluation 8%
ScriptTotalScriptingParse/CompileParty
Unattributable82ms5ms0ms3rd
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
A+
JS Bundles
No JavaScript
PASS
No JavaScript
Info::
No JavaScript bundles
No JavaScript files loaded.
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+
Page Weight Inventory
3 resources · 184 KB · 0 KB savings available
PASS
3 resources · 184 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 184 KB
3 resources · 184.3 KiB · 0 third-party Within 1MB page-weight target
Image 99% · 182.9 KiB
Document 1% · 1.2 KiB
Other 0% · 147 B
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
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

A+
HTTP Caching
max-age=2592000 (4 weeks)
PASS
max-age=2592000 (4 weeks)
Info::
Cache-Control header is set
Got: public, max-age=2592000
Info::
Effective TTL: 4 weeks (max-age=2592000)
Info::
Last-Modified header present
Cache-Control

public, max-age=2592000

DirectiveValueMeaning
public—Any cache may store this response
max-age2592000Cache for 4 weeks
Effective TTL: 2592000 seconds
Network Waterfall
3 requests over 275ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 782 ms LCP 1.8 shttps://linkr.bio// https://linkr.bio/ — 200 — 1.2 KiB — 68 ms — h2https://linkr.bio/img_v3.png/img_v3.png https://linkr.bio/img_v3.png — 200 — 182.9 KiB — 72 ms — h2https://linkr.bio/favicon.ico/favicon.ico https://linkr.bio/favicon.ico — 404 — 147 B — 121 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
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 82ms · 0KB · $1/mo
Unattributable
Other
Optional
Execution 82ms
Transfer 0 KB
Monthly Cost $1/mo

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

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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