https://www.mastertechca.com
Performance
· 23 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
88
GRADE
B
FIX
2
REVIEW
7
PASS
11
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
93
92
100
92
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
494 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.69 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
45 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.065
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
810 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.
1.70 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 sChecks
2311 PASS 7 REVIEW 2 FIX
DThird-Party ImpactAction98% third-party, 0 ms blockingFIX
Third-Party Impact
Action98% third-party, 0 ms blocking
98% third-party, 0 ms blocking
Warning::
Third-party code accounts for 98% of page weight (1.6 MiB of 1.7 MiB)
Info::
Third-party blocking time is low (0 ms)
98%
First-party Third-party
DPage Weight InventoryAction60 resources · 1.7 MB · 71 KB savings availableFIX
Page Weight Inventory
Action60 resources · 1.7 MB · 71 KB savings available
60 resources · 1.7 MB · 71 KB savings available
Warning::
Page weight 1.7 MB exceeds 1 MB target by 670 KB
Got: 1.7 MB Expected: ≤ 1 MB
Info::
~71 KB of savings available
Warning::
59 third-party resources (98% of weight)
60 resources · 1.7 MiB · 59 third-party 670.5 KiB over 1MB target
Image 56% · 944.1 KiB
JavaScript 23% · 395.4 KiB
Font 16% · 267.0 KiB
CSS 3% · 52.2 KiB
Document 2% · 33.5 KiB
Other 0% · 2.2 KiB
~71.4 KiB of savings available
Remove unused JavaScript: 71.4 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 60 resources | 1.7 MiB | ||||||
CPage Weight BudgetAction1.7 MB transferred, 60 requestsREVIEW
Page Weight Budget
Action1.7 MB transferred, 60 requests
1.7 MB transferred, 60 requests
Info::
Page weighs 2.9 MB (1.7 MB transferred)
Info::
Fonts are 267 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 267 KB
Info::
60 HTTP requests
Info::
Estimated 0.35 g CO2 per page load
1.7 MB transferred
60 requests
0.35 g CO2 per page load
Images 934.2 KiB 55%
JavaScript 395.4 KiB 23%
Fonts 267.0 KiB 16%
CSS 52.2 KiB 3%
HTML 33.5 KiB 2%
Other 11.9 KiB 1%
Other 250 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Approaching limit
Subset fonts to include only used characters, or switch to system font stacks.
Why this matters
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
BJS Execution Cost711ms total JS executionREVIEW
JS Execution Cost
711ms total JS execution
711ms total JS execution
Warning::
https://www.mastertechca.com/: 422ms CPU time
Info::
https://static.cdn-website.com/mnlt/production/686...: 112ms CPU time
Info::
Unattributable: 66ms CPU time
Info::
https://static.cdn-website.com/mnlt/production/686...: 60ms CPU time
Info::
https://cdn.tailwindcss.com/: 51ms CPU time
Info::
Third-party scripts: 223ms (31% of total)
Main Thread Breakdown
Script Evaluation 42% Style & Layout 31% Other 13% Rendering 5% Script Parsing & Compilation 4% Parse HTML & CSS 4%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.mastertechca.com/ | 422ms | 122ms | 3ms | 1st |
| https://static.cdn-website.com/mnlt/production/6862/_dm/s/rt/dist/scripts/d-js-runtime-flex-package.min.js | 112ms | 88ms | 9ms | 3rd |
| Unattributable | 66ms | 2ms | 0ms | 1st |
| https://static.cdn-website.com/mnlt/production/6862/editor/apps/modules/runtime/807.752d021ad55d7ccfef14.js | 60ms | 25ms | 1ms | 3rd |
| https://cdn.tailwindcss.com/ | 51ms | 42ms | 8ms | 3rd |
BJS Bundles21 scripts, 71 KB unusedREVIEW
JS Bundles
21 scripts, 71 KB unused
21 scripts, 71 KB unused
Warning::
https://static.cdn-website.com/mnlt/production/686...: 71 KB unused (66%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 71 KB
71 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://static.cdn-website.com/mnlt/production/6862/_dm/s/rt/dist/scripts/d-js-runtime-flex-package.min.js | 109 KB | 71 KB (66%) | ✓ | 3rd |
| https://cdn.tailwindcss.com/3.4.17 | 124 KB | — | ✓ | 3rd |
| https://d32hwlnfiv2gyn.cloudfront.net/sp-2.0.0-dm-0.1.min.js | 18 KB | — | ✓ | 3rd |
| https://static.cdn-website.com/mnlt/production/6862/editor/apps/modules/runtime/runtime-module-layout.831463bddab76067774b.js | 5 KB | — | ✓ | 3rd |
| https://static.cdn-website.com/mnlt/production/6862/editor/apps/modules/runtime/runtime-flex-link-on-container.ec20bb427ddf13d61ed8.js | 1 KB | — | ✓ | 3rd |
| https://static.cdn-website.com/mnlt/production/6862/editor/apps/modules/runtime/runtime-module-anchors.f2babd881de1bd164333.js | 1 KB | — | ✓ | 3rd |
| https://static.cdn-website.com/mnlt/production/6862/editor/apps/modules/runtime/533.b0097e92d091512339c2.js | 20 KB | — | ✓ | 3rd |
| https://static.cdn-website.com/mnlt/production/6862/editor/apps/modules/runtime/336.adcc183be8a61b06a2cd.js | 3 KB | — | ✓ | 3rd |
| https://static.cdn-website.com/mnlt/production/6862/editor/apps/modules/runtime/265.3f77af9ed647faa2a5d3.js | 2 KB | — | ✓ | 3rd |
| https://static.cdn-website.com/mnlt/production/6862/editor/apps/modules/runtime/930.e6efc422c901c8564b01.js | 1 KB | — | ✓ | 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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
HTTP/3 (QUIC)
HTTP/3 not advertised
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
Server-Timing Observability
No Server-Timing header found
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.
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
BHTTP Cachingno-cache, must-revalidateREVIEW
HTTP Caching
no-cache, must-revalidate
no-cache, must-revalidate
Info::
Cache-Control header is set
Got: no-cache, must-revalidate
Info::
ETag present — enables conditional (304) responses
Cache-Control
no-cache, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| no-cache | — | Cache but always revalidate first |
| must-revalidate | — | Must recheck with server after expiry |
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.
AImage Optimization18 images, 0 KB saveablePASS
Image Optimization
18 images, 0 KB saveable
18 images, 0 KB saveable
Info::
All images are well-optimized
18 images 934 KB
0 oversized -0 KB
2 legacy format
0 missing dimensions CLS risk
A+Font Loading7 fonts (267 KB)PASS
Font Loading
7 fonts (267 KB)
7 fonts (267 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
7
267 KB total
Render-blocking
0
of 7
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
xn7gYHE41ni1AdIRggexSg.... woff2 swap
Size 25 KB
Load time 26 ms
Start 127 ms
Risk FOUT — text flashes from fallback to web font
i7dOIFdwYjGaAMFtZd_QA1Z... woff2 swap
Size 32 KB
Load time 33 ms
Start 167 ms
Risk FOUT — text flashes from fallback to web font
JTUSjIg69CK48gW7PXoo9Wl... woff2 swap
Size 14 KB
Load time 29 ms
Start 167 ms
Risk FOUT — text flashes from fallback to web font
fontawesome-webfont.woff woff swap
Size 96 KB
Load time 50 ms
Start 168 ms
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
1Ptsg8LJRfWJmhDAuUs4TYF... woff2 swap
Size 30 KB
Load time 23 ms
Start 408 ms
Risk FOUT — text flashes from fallback to web font
TK3iWkUHHAIjg752GT8G.woff2 woff2 swap
Size 28 KB
Load time 33 ms
Start 409 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 42 KB
Load time 22 ms
Start 702 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 ~29 KB and ~58 ms
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+Document CompressionDocument response uses brotliPASS
Document Compression
Document response uses brotli
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.
AAsset Compression1 of 2 asset hosts still on gzipPASS
Asset Compression
1 of 2 asset hosts still on gzip
1 of 2 asset hosts still on gzip
Info::
irp.cdn-website.com serves assets with brotli (assets: 23)
Got: irp.cdn-website.com (text/css)
Info::
static.cdn-website.com serves assets with gzip; brotli would be ~20% smaller (assets: 3)
Every current browser accepts brotli. On a CDN this is a per-pull-zone toggle (Cloudflare, Fastly, CloudFront, CDN77, Bunny all expose it); on an origin it needs the brotli module (nginx-brotli, Apache mod_brotli). The saving lands on the assets this host serves, not on the HTML document -- the document's own encoding is reported separately.
Got: static.cdn-website.com (text/css)
A+LCP Image PreloadLCP preload audit not availablePASS
LCP Image Preload
LCP preload audit not available
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+Main HTML Cache-ControlMain HTML uses no-cache -- safe revalidate-on-request policyPASS
Main HTML Cache-Control
Main HTML uses no-cache -- safe revalidate-on-request policy
Main HTML uses no-cache -- safe revalidate-on-request policy
Info::
Main HTML uses no-cache -- safe revalidate-on-request policy
Got: no-cache, must-revalidate
A+Server Response Intelligence2 server-response signal(s) detectedPASS
Server Response Intelligence
2 server-response signal(s) detected
2 server-response signal(s) detected
Info::
`Vary` header declared: user-agent,accept-encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
`ETag` present -- conditional GET supported
Network Waterfall60 requests over 1592msINFO
Network Waterfall
60 requests over 1592ms
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
31% of JavaScript execution is third-party
First-party Third-party 223ms · 124KB · $3/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
static.cdn-website.com static.cdn-website.com | Other | 112ms | 109 KB | 66% | $1/mo | Optional |
static.cdn-website.com static.cdn-website.com | Other | 60ms | 15 KB | — | $1/mo | Optional |
cdn.tailwindcss.com cdn.tailwindcss.com | Other | 51ms | 0 KB | — | $1/mo | Optional |
static.cdn-website.com
Other
Execution 112ms
Transfer 109 KB
Unused 66%
Monthly Cost $1/mo
static.cdn-website.com
Other
Execution 60ms
Transfer 15 KB
Monthly Cost $1/mo
cdn.tailwindcss.com
Other
Execution 51ms
Transfer 0 KB
Monthly Cost $1/mo
66% of static.cdn-website.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
Image Optimization13 images, 0 KB total, 0 KB wastedINFO
Image Optimization
13 images, 0 KB total, 0 KB wasted
Image Optimization Audit
Total Images
13
Total Size
0 KB
Oversized
7
11 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.