Skip to content
https://Hammer3.com

Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
1
REVIEW
5
PASS
13
INFO
3

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

Mobile Desktop
74
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
81
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.
92
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.

824 ms

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

950 ms

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.

0.726

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

1.14 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.

956 ms

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
22
13 PASS 5 REVIEW 1 FIX
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
Info::
Last-Modified header present

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Image Optimization
8 images, 0 KB saveable
REVIEW
8 images, 0 KB saveable
Warning::
https://hammer3.com/assets/ai-QboPvXe2.webp is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://hammer3.com/assets/pbg2-5TTB8qJ9.webp is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://hammer3.com/assets/pbg6-LW0-dxSg.webp is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
8 images 589 KB
0 oversized -0 KB
1 legacy format
3 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

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

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

C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
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.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
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.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Page Weight Budget
818 KB transferred, 22 requests
PASS
818 KB transferred, 22 requests
Info::
Page weighs 1.2 MB (818 KB transferred)
Info::
22 HTTP requests
Info::
Estimated 0.17 g CO2 per page load
818 KB / 2.4 MB budget
818 KB transferred
22 requests
0.17 g CO2 per page load
Images 588.7 KiB 72%
JavaScript 168.7 KiB 21%
Fonts 43.2 KiB 5%
CSS 14.0 KiB 2%
Other 2.5 KiB 0%
HTML 1.3 KiB 0%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
9% third-party, 0 ms blocking
PASS
9% third-party, 0 ms blocking
Info::
Third-party code accounts for 9% of page weight (72.1 KiB of 818.3 KiB)
Info::
Third-party blocking time is low (0 ms)
91%
First-party Third-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+
JS Execution Cost
400ms total JS execution
PASS
400ms total JS execution
Info::
https://hammer3.com/assets/vendor-zGAdSkjg.js: 124ms CPU time
Info::
https://hammer3.com/: 107ms CPU time
Info::
Unattributable: 100ms CPU time
Info::
https://hammer3.com/cdn-cgi/scripts/7d0fa10a/cloud...: 68ms CPU time
Info::
Third-party scripts: 100ms (25% of total)

Main Thread Breakdown

Script Evaluation 34% Other 33% Style & Layout 25% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://hammer3.com/assets/vendor-zGAdSkjg.js124ms84ms1ms1st
https://hammer3.com/107ms2ms0ms1st
Unattributable100ms3ms0ms3rd
https://hammer3.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js68ms48ms1ms1st
A+
Font Loading
2 fonts (43 KB)
PASS
2 fonts (43 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

43 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 500 ms 1.0 s FCP 824 ms LCP 950 mshttps://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2JTUSjIg1_i6t8kCHKm459Wl... https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2 — 34.7 KiB — 18 ms — font-display: swaphttps://fonts.gstatic.com/s/hind/v18/5aU69_a8oxmIdGl4BDGwgDI.woff25aU69_a8oxmIdGl4BDGwgDI... https://fonts.gstatic.com/s/hind/v18/5aU69_a8oxmIdGl4BDGwgDI.woff2 — 8.5 KiB — 15 ms — font-display: swap
JTUSjIg1_i6t8kCHKm459Wl... woff2 swap
Size 35 KB
Load time 18 ms
Start 375 ms
Risk FOUT — text flashes from fallback to web font
5aU69_a8oxmIdGl4BDGwgDI... woff2 swap
Size 8 KB
Load time 15 ms
Start 377 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
JS Bundles
6 scripts, 42 KB unused
PASS
6 scripts, 42 KB unused
Warning::
https://hammer3.com/assets/vendor-zGAdSkjg.js: 42 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://unpkg.com/flowbite@1.3.3/dist/flowbite.js: unminified — 6 KB could be saved
Info::
Total unused JavaScript: 42 KB
42 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://hammer3.com/assets/vendor-zGAdSkjg.js100 KB42 KB (42%)✓1st
https://hammer3.com/assets/router-ih45X-RH.js40 KB—✓1st
https://hammer3.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js4 KB—✓1st
https://hammer3.com/assets/main-hyCcgF6E.js1 KB—✓1st
https://unpkg.com/flowbite@1.3.3/dist/flowbite.js18 KB—✗3rd
https://apis.google.com/js/api.js6 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

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+
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+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: 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::
`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+
Page Weight Inventory
22 resources · 818 KB · 42 KB savings available
PASS
22 resources · 818 KB · 42 KB savings available
Info::
Within 1MB page-weight target
Got: 818 KB
Info::
9 third-party resources (9% of weight)
Info::
1 resources over 200KB
22 resources · 818.3 KiB · 9 third-party Within 1MB page-weight target
Image 72% · 591.2 KiB
JavaScript 21% · 168.7 KiB
Font 5% · 43.2 KiB
CSS 2% · 14.0 KiB
Document 0% · 1.3 KiB

~42.0 KiB of savings available

Remove unused JavaScript: 42.0 KiB
Network Waterfall
22 requests over 517ms
INFO
0 ms 200 ms 400 ms 600 ms 800 ms FCP 824 ms LCP 950 mshttps://hammer3.com// https://hammer3.com/ — 200 — 1.3 KiB — 40 ms — h3https://cdn.jsdelivr.net/gh/lipis/flag-icons@7.0.0/css/flag-icons.min.csscdn.jsdelivr.net/gh/lipis/flag-icon... https://cdn.jsdelivr.net/gh/lipis/flag-icons@7.0.0/css/flag-icons.min.css — 200 — 2.4 KiB — 49 ms — h2https://hammer3.com/assets/vendor-zGAdSkjg.js/assets/vendor-zGAdSkjg.js https://hammer3.com/assets/vendor-zGAdSkjg.js — 200 — 99.6 KiB — 61 ms — h3https://hammer3.com/assets/router-ih45X-RH.js/assets/router-ih45X-RH.js https://hammer3.com/assets/router-ih45X-RH.js — 200 — 39.7 KiB — 54 ms — h3https://hammer3.com/assets/router-uCWn486s.css/assets/router-uCWn486s.css https://hammer3.com/assets/router-uCWn486s.css — 200 — 9.8 KiB — 36 ms — h3https://hammer3.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js/cdn-cgi/scripts/7d0fa10a/cloudflar... https://hammer3.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js — 200 — 4.4 KiB — 32 ms — h3https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&display=swapfonts.googleapis.com/css2?family=Mo... https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&display=swap — 200 — 757 B — 36 ms — h2https://fonts.googleapis.com/css2?family=Hind:wght@300;400;500;600;700&display=swapfonts.googleapis.com/css2?family=Hi... https://fonts.googleapis.com/css2?family=Hind:wght@300;400;500;600;700&display=swap — 200 — 1.0 KiB — 30 ms — h2https://hammer3.com/assets/main-hyCcgF6E.js/assets/main-hyCcgF6E.js https://hammer3.com/assets/main-hyCcgF6E.js — 200 — 786 B — 17 ms — h3https://unpkg.com/flowbite@1.3.3/dist/flowbite.jsunpkg.com/flowbite@1.3.3/dist/flowb... https://unpkg.com/flowbite@1.3.3/dist/flowbite.js — 200 — 18.0 KiB — 55 ms — h3https://apis.google.com/js/api.jsapis.google.com/js/api.js https://apis.google.com/js/api.js — 200 — 6.3 KiB — 30 ms — h2https://hammer3.com/assets/hammer3_logo_cropped-m4svbA2A.svg/assets/hammer3_logo_cropped-m4svbA... https://hammer3.com/assets/hammer3_logo_cropped-m4svbA2A.svg — 200 — 2.5 KiB — 17 ms — h3data:image/svg+xml,%3c?xml%20version=%271.0%27%20encoding=%27utf-8%27?%3e%3c!--%20Generator:%20Adob…data:image/svg+xml,%3c?xml%20versio... data:image/svg+xml,%3c?xml%20version=%271.0%27%20encoding=%27utf-8%27?%3e%3c!--%20Generator:%20Adob… — 200 — 0 B — 0 ms — datahttps://cdn.jsdelivr.net/gh/lipis/flag-icons@7.0.0/flags/4x3/de.svgcdn.jsdelivr.net/gh/lipis/flag-icon... https://cdn.jsdelivr.net/gh/lipis/flag-icons@7.0.0/flags/4x3/de.svg — 200 — 518 B — 13 ms — h2https://hammer3.com/assets/bg2-1rb3pZSb.webp/assets/bg2-1rb3pZSb.webp https://hammer3.com/assets/bg2-1rb3pZSb.webp — 200 — 95.4 KiB — 19 ms — h3https://hammer3.com/assets/forest-walk-lAdL5yUV.webp/assets/forest-walk-lAdL5yUV.webp https://hammer3.com/assets/forest-walk-lAdL5yUV.webp — 200 — 233.2 KiB — 29 ms — h3https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2fonts.gstatic.com/s/montserrat/v31/... https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2 — 200 — 34.7 KiB — 18 ms — h3https://fonts.gstatic.com/s/hind/v18/5aU69_a8oxmIdGl4BDGwgDI.woff2fonts.gstatic.com/s/hind/v18/5aU69_... https://fonts.gstatic.com/s/hind/v18/5aU69_a8oxmIdGl4BDGwgDI.woff2 — 200 — 8.5 KiB — 15 ms — h3https://hammer3.com/assets/clown-gun-zoom-aoyKm8yX.webp/assets/clown-gun-zoom-aoyKm8yX.web... https://hammer3.com/assets/clown-gun-zoom-aoyKm8yX.webp — 200 — 17.6 KiB — 18 ms — h3https://hammer3.com/assets/pbg2-5TTB8qJ9.webp/assets/pbg2-5TTB8qJ9.webp https://hammer3.com/assets/pbg2-5TTB8qJ9.webp — 200 — 90.6 KiB — 53 ms — h3https://hammer3.com/assets/pbg6-LW0-dxSg.webp/assets/pbg6-LW0-dxSg.webp https://hammer3.com/assets/pbg6-LW0-dxSg.webp — 200 — 70.6 KiB — 53 ms — h3https://hammer3.com/assets/ai-QboPvXe2.webp/assets/ai-QboPvXe2.webp https://hammer3.com/assets/ai-QboPvXe2.webp — 200 — 80.8 KiB — 52 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
25% of JavaScript execution is third-party
First-party Third-party 100ms · 0KB · $1/mo
Unattributable
Other
Optional
Execution 100ms
Transfer 0 KB
Monthly Cost $1/mo

How third-party costs are calculated

Image Optimization
8 images, 240 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

8

Total Size

240 KB

Oversized

1

3 missing alt text 4 missing dimensions 3 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback