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https://hertz.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
89
GRADE
B
FIX
3
REVIEW
1
PASS
11
INFO
2

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

Mobile Desktop
0
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
45
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
73
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
45
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.

0 ms

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

0 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.

0.000

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

0 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.

0 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
17
11 PASS 1 REVIEW 3 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (913.5 KiB of 913.6 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
3103ms total JS execution
FIX
3103ms total JS execution
Warning::
https://www.hertz.com/A-thou-doe-prospeeceiud-acco...: 2456ms CPU time
Warning::
Unattributable: 376ms CPU time
Info::
https://js.hcaptcha.com/1/api.js: 205ms CPU time
Info::
https://www.hertz.com/_Incapsula_Resource?SWJIYLWA...: 66ms CPU time
Warning::
Third-party scripts: 3103ms (100% of total)

Main Thread Breakdown

Script Evaluation 86% Other 5%
ScriptTotalScriptingParse/CompileParty
https://www.hertz.com/A-thou-doe-prospeeceiud-accome-Hauen-heeleepell-2456ms2317ms63ms3rd
Unattributable376ms238ms0ms3rd
https://js.hcaptcha.com/1/api.js205ms99ms21ms3rd
https://www.hertz.com/_Incapsula_Resource?SWJIYLWA=719d34d31c8e3a6e6fffd425f7e032f366ms56ms9ms3rd
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.

No Cache-Control header

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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Page Weight Budget
914 KB transferred, 20 requests
PASS
914 KB transferred, 20 requests
Info::
Page weighs 3.2 MB (914 KB transferred)
Warning::
JavaScript is 733 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 733 KB
Info::
20 HTTP requests
Info::
Estimated 0.19 g CO2 per page load
914 KB / 2.4 MB budget
914 KB transferred
20 requests
0.19 g CO2 per page load
JavaScript 732.7 KiB 80%
HTML 173.9 KiB 19%
Other 4.9 KiB 1%
Other 1.1 KiB 0%
Other 918 B 0%
Images 36 B 0%
0 2.4 MB 4.9 MB
Under budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

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
4 images, 0 KB saveable
PASS
4 images, 0 KB saveable
Info::
All images are well-optimized
4 images 0 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+
JS Bundles
4 scripts, 0 KB unused
PASS
4 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.hertz.com/_Incapsula_Resource?SWJIYLWA=719d34d31c8e3a6e6fffd425f7e032f320 KB—✓3rd
https://www.hertz.com/A-thou-doe-prospeeceiud-accome-Hauen-heeleepell-243 KB—✓3rd
https://js.hcaptcha.com/1/api.js86 KB—✓3rd
https://newassets.hcaptcha.com/c/c881d5cb482702027a33922d4e82f7ca5fb1d993cdbfb124d59ec3b5e578bced/hsw.js384 KB—✓3rd
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
20 resources · 914 KB · 0 KB savings available
PASS
20 resources · 914 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 914 KB
Warning::
19 third-party resources (100% of weight)
Info::
2 resources over 200KB
20 resources · 913.6 KiB · 19 third-party Within 1MB page-weight target
JavaScript 80% · 732.7 KiB
Document 19% · 173.9 KiB
Image 1% · 4.8 KiB
Other 0% · 2.2 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
Network Waterfall
20 requests over 1238ms
INFO
0 ms 500 ms 1.0 shttps://hertz.com// https://hertz.com/ — 301 — 54 B — 285 ms — h2https://www.hertz.com/www.hertz.com/ https://www.hertz.com/ — 200 — 1.4 KiB — 34 ms — h2https://www.hertz.com/_Incapsula_Resource?SWJIYLWA=719d34d31c8e3a6e6fffd425f7e032f3www.hertz.com/_Incapsula_Resource?S... https://www.hertz.com/_Incapsula_Resource?SWJIYLWA=719d34d31c8e3a6e6fffd425f7e032f3 — 200 — 19.9 KiB — 9 ms — h2https://www.hertz.com/A-thou-doe-prospeeceiud-accome-Hauen-heeleepell-www.hertz.com/A-thou-doe-prospeecei... https://www.hertz.com/A-thou-doe-prospeeceiud-accome-Hauen-heeleepell- — 200 — 243.3 KiB — 16 ms — h2https://www.hertz.com/_Incapsula_Resource?SWKMTFSR=1&e=0.03873489896710103www.hertz.com/_Incapsula_Resource?S... https://www.hertz.com/_Incapsula_Resource?SWKMTFSR=1&e=0.03873489896710103 — 200 — 36 B — 3 ms — h2https://www.hertz.com/_Incapsula_Resource?SWUDNSAI=31&xinfo=62-19364899-0%20NNNN%20RT%281776901870565%203%29%20q%280%20-1%20-1%20-1%29%20r%281%20-1%29%20B12%2814%2c0%2c0%29%20U5&incident_id=4557000110217009232-122139202225505022&edet=12&cinfo=0e000000d6f0&rpinfo=0&cts=HGyhc4AX7yEyKQq%2b53tq8VU1rpntP703Cg3NIgUgtG6HxmjtQutGUZlq2uTkE0h4&cip=141.227.188.193&mth=GETwww.hertz.com/_Incapsula_Resource?S... https://www.hertz.com/_Incapsula_Resource?SWUDNSAI=31&xinfo=62-19364899-0%20NNNN%20RT%281776901870565%203%29%20q%280%20-1%20-1%20-1%29%20r%281%20-1%29%20B12%2814%2c0%2c0%29%20U5&incident_id=4557000110217009232-122139202225505022&edet=12&cinfo=0e000000d6f0&rpinfo=0&cts=HGyhc4AX7yEyKQq%2b53tq8VU1rpntP703Cg3NIgUgtG6HxmjtQutGUZlq2uTkE0h4&cip=141.227.188.193&mth=GET — 200 — 7.6 KiB — 2 ms — h2https://js.hcaptcha.com/1/api.jsjs.hcaptcha.com/1/api.js https://js.hcaptcha.com/1/api.js — 200 — 86.0 KiB — 137 ms — h3data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGUAAAAeCAYAAAA1mdDNAAAAAXNSR0IArs4c6QAACh5JREFUaAXtW…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGUAAAAeCAYAAAA1mdDNAAAAAXNSR0IArs4c6QAACh5JREFUaAXtW… — 200 — 0 B — 0 ms — datahttps://newassets.hcaptcha.com/captcha/v1/7d7b8b396198c8eb285d18bbc376e49a41bb440a/static/hcaptcha.htmlnewassets.hcaptcha.com/captcha/v1/7... https://newassets.hcaptcha.com/captcha/v1/7d7b8b396198c8eb285d18bbc376e49a41bb440a/static/hcaptcha.html — 200 — 164.8 KiB — 159 ms — h3https://newassets.hcaptcha.com/captcha/v1/7d7b8b396198c8eb285d18bbc376e49a41bb440a/static/hcaptcha.htmlnewassets.hcaptcha.com/captcha/v1/7... https://newassets.hcaptcha.com/captcha/v1/7d7b8b396198c8eb285d18bbc376e49a41bb440a/static/hcaptcha.html — 200 — 0 B — 157 ms — h3https://406b2f226c5c.w.hcaptcha.com/logo.png406b2f226c5c.w.hcaptcha.com/logo.pn... https://406b2f226c5c.w.hcaptcha.com/logo.png — 200 — 2.0 KiB — 102 ms — http/1.1data:image/gif;base64,R0lGODlhyADIAPQZAPb29vX19e3t7fT09Orq6vLy8u7u7vv7++np6ezs7Ovr6+jo6O/v7/r6+vj4+…data:image/gif;base64,R0lGODlhyADIA... data:image/gif;base64,R0lGODlhyADIAPQZAPb29vX19e3t7fT09Orq6vLy8u7u7vv7++np6ezs7Ovr6+jo6O/v7/r6+vj4+… — 200 — 0 B — 0 ms — datadata:image/gif;base64,R0lGODlhyADIAPQZAPb29vX19e3t7fT09Orq6vLy8u7u7vv7++np6ezs7Ovr6+jo6O/v7/r6+vj4+…data:image/gif;base64,R0lGODlhyADIA... data:image/gif;base64,R0lGODlhyADIAPQZAPb29vX19e3t7fT09Orq6vLy8u7u7vv7++np6ezs7Ovr6+jo6O/v7/r6+vj4+… — 200 — 0 B — 1 ms — datahttps://e270884e24de.w.hcaptcha.com/logo.pnge270884e24de.w.hcaptcha.com/logo.pn... https://e270884e24de.w.hcaptcha.com/logo.png — 200 — 2.0 KiB — 102 ms — http/1.1data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEAAAABACAYAAACqaXHeAAAABmJLR0QA/wD/AP+gvaeTAAAC00lEQ…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEAAAABACAYAAACqaXHeAAAABmJLR0QA/wD/AP+gvaeTAAAC00lEQ… — 200 — 0 B — 0 ms — datahttps://api.hcaptcha.com/checksiteconfig?v=7d7b8b396198c8eb285d18bbc376e49a41bb440a&host=www.hertz.com&sitekey=dd6e16a7-972e-47d2-93d0-96642fb6d8de&sc=1&swa=1&spst=1api.hcaptcha.com/checksiteconfig?v=... https://api.hcaptcha.com/checksiteconfig?v=7d7b8b396198c8eb285d18bbc376e49a41bb440a&host=www.hertz.com&sitekey=dd6e16a7-972e-47d2-93d0-96642fb6d8de&sc=1&swa=1&spst=1 — 200 — 1.1 KiB — 80 ms — h3https://www.hertz.com/A-thou-doe-prospeeceiud-accome-Hauen-heeleepell-?d=www.hertz.comwww.hertz.com/A-thou-doe-prospeecei... https://www.hertz.com/A-thou-doe-prospeeceiud-accome-Hauen-heeleepell-?d=www.hertz.com — 200 — 943 B — 107 ms — h2https://www.hertz.com/favicon.icowww.hertz.com/favicon.ico https://www.hertz.com/favicon.ico — 301 — 70 B — 18 ms — h2https://newassets.hcaptcha.com/c/c881d5cb482702027a33922d4e82f7ca5fb1d993cdbfb124d59ec3b5e578bced/hsw.jsnewassets.hcaptcha.com/c/c881d5cb48... https://newassets.hcaptcha.com/c/c881d5cb482702027a33922d4e82f7ca5fb1d993cdbfb124d59ec3b5e578bced/hsw.js — 200 — 383.5 KiB — 61 ms — h3https://www.hertz.com/content/dam/hertz/global/resources/favicon.svgwww.hertz.com/content/dam/hertz/glo... https://www.hertz.com/content/dam/hertz/global/resources/favicon.svg — 200 — 794 B — 11 ms — h2
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 3103ms · 349KB · $41/mo
www.hertz.com
Other
Costly
Execution 2456ms
Transfer 243 KB
Monthly Cost $33/mo
Unattributable
Other
Costly
Execution 376ms
Transfer 0 KB
Monthly Cost $5/mo
js.hcaptcha.com
Other
Costly
Execution 205ms
Transfer 86 KB
Monthly Cost $3/mo
www.hertz.com
Other
Optional
Execution 66ms
Transfer 20 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.hertz.com adds 2456ms and costs ~$33/month
  • Unattributable adds 376ms and costs ~$5/month
  • js.hcaptcha.com adds 205ms and costs ~$3/month

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

www.hertz.com takes 2456ms 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

Unattributable takes 376ms 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

js.hcaptcha.com takes 205ms 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

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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