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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
81
GRADE
B
FIX
2
REVIEW
4
PASS
6
INFO
2

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

Mobile Desktop
96
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
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.

717 ms

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

1.32 s

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

12 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.

1.06 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.

1.45 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
14
6 PASS 4 REVIEW 2 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 (1.6 MiB of 1.6 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
93 scripts, 749 KB unused
FIX
93 scripts, 749 KB unused
Warning::
https://developer.hashicorp.com/_next/static/chunk...: 146 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.datadoghq-browser-agent.com/datadog-ru...: 86 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.datadoghq-browser-agent.com/datadog-ru...: 86 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-TPQ...: 65 KB unused (54%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://developer.hashicorp.com/_next/static/chunk...: 57 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 749 KB
749 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://developer.hashicorp.com/_next/static/chunks/pages/_app-3316d340c7a05011.js?dpl=dpl_2xDkfLQGe1kBp7PUtgGua6RBZ8Sg223 KB146 KB (65%)✓3rd
https://www.datadoghq-browser-agent.com/datadog-rum-v4.js0 KB86 KB (58%)✓3rd
https://www.datadoghq-browser-agent.com/datadog-rum-v4.js48 KB86 KB (58%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-TPQLJF3122 KB65 KB (54%)✓3rd
https://developer.hashicorp.com/_next/static/chunks/340-68337dc7a8534187.js?dpl=dpl_2xDkfLQGe1kBp7PUtgGua6RBZ8Sg83 KB57 KB (69%)✓3rd
https://developer.hashicorp.com/_next/static/chunks/6101-91a5590c0c7378e1.js?dpl=dpl_2xDkfLQGe1kBp7PUtgGua6RBZ8Sg0 KB44 KB (94%)✓3rd
https://developer.hashicorp.com/_next/static/chunks/6101-91a5590c0c7378e1.js?dpl=dpl_2xDkfLQGe1kBp7PUtgGua6RBZ8Sg10 KB44 KB (94%)✓3rd
https://developer.hashicorp.com/_next/static/chunks/9226-abe08d380e4b5135.js?dpl=dpl_2xDkfLQGe1kBp7PUtgGua6RBZ8Sg15 KB33 KB (85%)✓3rd
https://developer.hashicorp.com/_next/static/chunks/9226-abe08d380e4b5135.js?dpl=dpl_2xDkfLQGe1kBp7PUtgGua6RBZ8Sg0 KB33 KB (85%)✓3rd
https://developer.hashicorp.com/_next/static/chunks/6320-ff86916643fd4f58.js?dpl=dpl_2xDkfLQGe1kBp7PUtgGua6RBZ8Sg0 KB31 KB (75%)✓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

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

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

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

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

C
Page Weight Budget
Action
1.6 MB transferred, 166 requests
REVIEW
1.6 MB transferred, 166 requests
Info::
Page weighs 5.2 MB (1.6 MB transferred)
Warning::
JavaScript is 650 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 650 KB
Warning::
166 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.33 g CO2 per page load
1.6 MB / 2.4 MB budget
1.6 MB transferred
166 requests
0.33 g CO2 per page load
JavaScript 649.7 KiB 40%
Other 461.5 KiB 28%
Other 202.3 KiB 12%
Fonts 196.4 KiB 12%
CSS 63.3 KiB 4%
Images 26.6 KiB 2%
HTML 25.4 KiB 2%
Other 336 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

B
JS Execution Cost
883ms total JS execution
REVIEW
883ms total JS execution
Warning::
Unattributable: 267ms CPU time
Info::
https://developer.hashicorp.com/_next/static/chunk...: 176ms CPU time
Info::
https://www.datadoghq-browser-agent.com/datadog-ru...: 151ms CPU time
Info::
https://developer.hashicorp.com/terraform: 100ms CPU time
Info::
https://developer.hashicorp.com/_next/static/chunk...: 98ms CPU time
Warning::
Third-party scripts: 883ms (100% of total)

Main Thread Breakdown

Script Evaluation 53% Other 24% Style & Layout 10% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
Unattributable267ms14ms0ms3rd
https://developer.hashicorp.com/_next/static/chunks/framework-f2b655730fee1ac7.js?dpl=dpl_2xDkfLQGe1kBp7PUtgGua6RBZ8Sg176ms148ms4ms3rd
https://www.datadoghq-browser-agent.com/datadog-rum-v4.js151ms133ms4ms3rd
https://developer.hashicorp.com/terraform100ms5ms0ms3rd
https://developer.hashicorp.com/_next/static/chunks/pages/_app-3316d340c7a05011.js?dpl=dpl_2xDkfLQGe1kBp7PUtgGua6RBZ8Sg98ms66ms20ms3rd
https://developer.hashicorp.com/_next/static/chunks/main-cebc8934c31d4c20.js?dpl=dpl_2xDkfLQGe1kBp7PUtgGua6RBZ8Sg90ms81ms2ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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+
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
5 images, 0 KB saveable
PASS
5 images, 0 KB saveable
Warning::
https://www.datocms-assets.com/2885/1663105398-dev... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
5 images 27 KB
0 oversized -0 KB
2 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+
Font Loading
2 fonts (196 KB)
PASS
2 fonts (196 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

196 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 717 ms LCP 1.3 shttps://developer.hashicorp.com/_next/static/media/d29050812a1756cf-s.p.woff2d29050812a1756cf-s.p.woff2 https://developer.hashicorp.com/_next/static/media/d29050812a1756cf-s.p.woff2 — 51.6 KiB — 0 ms — font-display: swaphttps://developer.hashicorp.com/_next/static/media/d5a42912b4de4242-s.p.woff2d5a42912b4de4242-s.p.woff2 https://developer.hashicorp.com/_next/static/media/d5a42912b4de4242-s.p.woff2 — 144.8 KiB — 0 ms — font-display: swap
d29050812a1756cf-s.p.woff2 woff2 swap
Size 52 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
d5a42912b4de4242-s.p.woff2 woff2 swap
Size 145 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 ~72 KB and ~144 ms

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
Network Waterfall
166 requests over 0ms
INFO

Performance analysis not available for this result.

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 883ms · 329KB · €10/mo
Unattributable
Other
Costly
Execution 267ms
Transfer 0 KB
Monthly Cost €3/mo
developer.hashicorp.com
Other
Optional
Execution 176ms
Transfer 46 KB
Monthly Cost €2/mo
www.datadoghq-browser-agent.com
Other
Optional
Execution 151ms
Transfer 0 KB
Unused 58%
Monthly Cost €2/mo
developer.hashicorp.com
Other
Optional
Execution 100ms
Transfer 25 KB
Monthly Cost €1/mo
developer.hashicorp.com
Other
Optional
Execution 98ms
Transfer 223 KB
Unused 65%
Monthly Cost €1/mo
developer.hashicorp.com
Other
Optional
Execution 90ms
Transfer 35 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 267ms 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

Unattributable takes 267ms 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

58% of www.datadoghq-browser-agent.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

65% of developer.hashicorp.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

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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