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Performance

· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
92
GRADE
A
FIX
1
REVIEW
4
PASS
18
INFO
4

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

Mobile Desktop
97
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
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.

964 ms

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

964 ms

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

203 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.

964 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.

2.98 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
27
18 PASS 4 REVIEW 1 FIX
D
Third-Party Impact
Action
84% third-party, 0 ms blocking
FIX
84% third-party, 0 ms blocking
Warning::
Third-party code accounts for 84% of page weight (177.8 KiB of 211.8 KiB)
Info::
Third-party blocking time is low (0 ms)
16%
84%
First-party Third-party
B
JS Execution Cost
786ms total JS execution
REVIEW
786ms total JS execution
Warning::
https://multitoolhub.pages.dev/: 341ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-7T6T...: 319ms CPU time
Info::
Unattributable: 126ms CPU time
Info::
Third-party scripts: 319ms (41% of total)

Main Thread Breakdown

Script Evaluation 41% Style & Layout 27% Other 18% Rendering 6% Script Parsing & Compilation 5%
ScriptTotalScriptingParse/CompileParty
https://multitoolhub.pages.dev/341ms25ms2ms1st
https://www.googletagmanager.com/gtag/js?id=G-7T6T7H7RJ0319ms279ms36ms3rd
Unattributable126ms9ms0ms1st
C
JS Bundles
Action
3 scripts, 74 KB unused
REVIEW
3 scripts, 74 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-7T6T...: 74 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://multitoolhub.pages.dev/assets/js/common.js: unminified — 4 KB could be saved
Warning::
https://multitoolhub.pages.dev/assets/js/main.js: unminified — 4 KB could be saved
Info::
Total unused JavaScript: 74 KB
74 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-7T6T7H7RJ0177 KB74 KB (42%)✓3rd
https://multitoolhub.pages.dev/assets/js/common.js9 KB—✗1st
https://multitoolhub.pages.dev/assets/js/main.js7 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

B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
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.
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+
Page Weight Budget
212 KB transferred, 8 requests
PASS
212 KB transferred, 8 requests
Info::
Page weighs 658 KB (212 KB transferred)
Info::
8 HTTP requests
Info::
Estimated 0.04 g CO2 per page load
212 KB / 2.4 MB budget
212 KB transferred
8 requests
0.04 g CO2 per page load
JavaScript 193.3 KiB 91%
HTML 8.9 KiB 4%
CSS 8.3 KiB 4%
Images 790 B 0%
Other 553 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under budget
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
Info::
All images are well-optimized
1 images 1 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
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+
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+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
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+
Document Compression
Document response uses brotli
PASS
Document response uses brotli
Info::
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Main HTML Cache-Control
Main HTML max-age=0 (≤ 5min) is appropriate
PASS
Main HTML max-age=0 (≤ 5min) is appropriate
Info::
Main HTML max-age=0 (≤ 5min) is appropriate
Got: public, max-age=0, must-revalidate
A
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Warning::
Compressed response missing `Vary` header
The page is served with `Content-Encoding: br` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A
Page Weight Inventory
8 resources · 212 KB · 74 KB savings available
PASS
8 resources · 212 KB · 74 KB savings available
Info::
Within 1MB page-weight target
Got: 212 KB
Info::
~74 KB of savings available
Warning::
2 third-party resources (84% of weight)
8 resources · 211.8 KiB · 2 third-party Within 1MB page-weight target
JavaScript 91% · 193.3 KiB
Document 4% · 8.9 KiB
CSS 4% · 8.3 KiB
Image 0% · 790 B
Other 0% · 553 B

~73.6 KiB of savings available

Remove unused JavaScript: 73.6 KiB
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+
JavaScript Blocking
No render-blocking JS or document.write usage detected
PASS
No render-blocking JS or document.write usage detected
Info::
No JavaScript blocking issues detected
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues 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: Cloudflare

Asset Compression
No text asset hosts to measure
INFO
No text asset hosts to measure
Info::
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
8 requests over 502ms
INFO
0 ms 500 ms 1.0 s FCP 964 ms LCP 964 mshttps://multitoolhub.pages.dev// https://multitoolhub.pages.dev/ — 200 — 8.9 KiB — 118 ms — h2https://multitoolhub.pages.dev/assets/css/style.css/assets/css/style.css https://multitoolhub.pages.dev/assets/css/style.css — 200 — 8.3 KiB — 35 ms — h2https://www.googletagmanager.com/gtag/js?id=G-7T6T7H7RJ0www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-7T6T7H7RJ0 — 200 — 177.3 KiB — 183 ms — h2https://multitoolhub.pages.dev/assets/js/common.js/assets/js/common.js https://multitoolhub.pages.dev/assets/js/common.js — 200 — 8.6 KiB — 82 ms — h3https://multitoolhub.pages.dev/assets/js/main.js/assets/js/main.js https://multitoolhub.pages.dev/assets/js/main.js — 200 — 7.4 KiB — 86 ms — h3https://multitoolhub.pages.dev/assets/icons/favicon.svg/assets/icons/favicon.svg https://multitoolhub.pages.dev/assets/icons/favicon.svg — 200 — 790 B — 66 ms — h3https://region1.google-analytics.com/g/collect?v=2&tid=G-7T6T7H7RJ0&gtm=45je6ar1v9267782338za208zd9267782338xf1&_p=1793288019110&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&cid=169285355.1793288019&frm=0&ngs=1&pscdl=noapi&rcb=19&sr=412x823&uaa=&uab=64&uafvl=Not%253AA-Brand%3B8.0.0.0%7CChromium%3B156.0.8078.73&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=115616985~115938466~115938468~118897920~118897930~120213116~120385422~120412528~120469145~120469153~121246026~121246034~123620777&sid=1793288019&sct=1&seg=0&dl=https%3A%2F%2Fmultitoolhub.pages.dev%2F&dt=MultiTool%20%E2%80%94%2058%20Free%20Online%20Tools%20for%20Text%2C%20Images%2C%20PDFs%20%26%20Code&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=414region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-7T6T7H7RJ0&gtm=45je6ar1v9267782338za208zd9267782338xf1&_p=1793288019110&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&cid=169285355.1793288019&frm=0&ngs=1&pscdl=noapi&rcb=19&sr=412x823&uaa=&uab=64&uafvl=Not%253AA-Brand%3B8.0.0.0%7CChromium%3B156.0.8078.73&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=115616985~115938466~115938468~118897920~118897930~120213116~120385422~120412528~120469145~120469153~121246026~121246034~123620777&sid=1793288019&sct=1&seg=0&dl=https%3A%2F%2Fmultitoolhub.pages.dev%2F&dt=MultiTool%20%E2%80%94%2058%20Free%20Online%20Tools%20for%20Text%2C%20Images%2C%20PDFs%20%26%20Code&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=414 — 204 — 553 B — 87 ms — h2https://multitoolhub.pages.dev/assets/icons/favicon.svg/assets/icons/favicon.svg https://multitoolhub.pages.dev/assets/icons/favicon.svg — 200 — 0 B — 2 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
41% of JavaScript execution is third-party
First-party Third-party 319ms · 177KB · $4/mo
Google Tag Manager
Tag Manager
Costly
Execution 319ms
Transfer 177 KB
Unused 42%
Monthly Cost $4/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 319ms and costs ~$4/month

41% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

Google Tag Manager takes 319ms 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

How third-party costs are calculated

Image Optimization
2 images, 0 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

2

Total Size

0 KB

1 missing lazy loading
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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