Performance
· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
1.13 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.78 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
454 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.
4.93 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.
5.93 s
Page Load Progression
FPage Weight BudgetAction9.7 MB transferred, 164 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction5560ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.pendo.io/_next/static/chunks/f58c171e.afd7b257bd2c15ad.js?dpl=dpl_CPLD7VDiaxw2HmenDq93UhTrQRGa | 2990ms | 2958ms | 11ms | 3rd |
| https://www.pendo.io/_next/static/chunks/1255-8d150713ebbcba06.js?dpl=dpl_CPLD7VDiaxw2HmenDq93UhTrQRGa | 839ms | 451ms | 4ms | 3rd |
| Unattributable | 584ms | 22ms | 0ms | 3rd |
| https://www.pendo.io/ | 490ms | 9ms | 30ms | 3rd |
| https://www.pendo.io/_next/static/chunks/5580.a4808b0cf38336a6.js?dpl=dpl_CPLD7VDiaxw2HmenDq93UhTrQRGa | 153ms | 21ms | 1ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MBJ22KN | 100ms | 81ms | 16ms | 3rd |
| https://www.pendo.io/_next/static/chunks/4bd1b696-100b9d70ed4e49c1.js?dpl=dpl_CPLD7VDiaxw2HmenDq93UhTrQRGa | 99ms | 55ms | 3ms | 3rd |
| https://www.pendo.io/_next/static/chunks/app/%5Blocale%5D/layout-b178b7897592e905.js?dpl=dpl_CPLD7VDiaxw2HmenDq93UhTrQRGa | 95ms | 64ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-G89E8N3637 | 82ms | 67ms | 14ms | 3rd |
| https://www.pendo.io/_next/static/chunks/webpack-97ee4923ac82bd59.js?dpl=dpl_CPLD7VDiaxw2HmenDq93UhTrQRGa | 73ms | 72ms | 0ms | 3rd |
Showing top 10 of 11 scripts
FJS BundlesAction52 scripts, 564 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://fast.wistia.net/assets/external/publicApi.js@379dc59f3883ecbd8a4ec99277538cfd8c619ee8 | 147 KB | 111 KB (76%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-G89E8N3637 | 176 KB | 83 KB (47%) | ✓ | 3rd |
| https://www.pendo.io/_next/static/chunks/f58c171e.afd7b257bd2c15ad.js?dpl=dpl_CPLD7VDiaxw2HmenDq93UhTrQRGa | 80 KB | 76 KB (95%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MBJ22KN | 200 KB | 70 KB (35%) | ✓ | 3rd |
| https://fast.wistia.net/player.js | 55 KB | 40 KB (73%) | ✓ | 3rd |
| https://fast.wistia.net/player.js | 0 KB | 40 KB (73%) | ✓ | 3rd |
| https://fast.wistia.net/player.js | 55 KB | 40 KB (73%) | ✓ | 3rd |
| https://www.pendo.io/_next/static/chunks/806-5a6ab7b039432454.js?dpl=dpl_CPLD7VDiaxw2HmenDq93UhTrQRGa | 70 KB | 33 KB (47%) | ✓ | 3rd |
| https://www.pendo.io/_next/static/chunks/1792-e900f31086e791a7.js?dpl=dpl_CPLD7VDiaxw2HmenDq93UhTrQRGa | 43 KB | 29 KB (68%) | ✓ | 3rd |
| https://code.jquery.com/jquery-3.7.1.min.js | 30 KB | 23 KB (76%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction164 resources · 9.7 MB · 564 KB savings availableFIX
~564.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 164 resources | 9.7 MiB | ||||||
CImage OptimizationAction49 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
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.
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.
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.
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.
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.
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.
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.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
BHTTP CachingprivateREVIEW
private
| Directive | Value | Meaning |
|---|---|---|
| private | — | Only browser cache, not CDN/proxy |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading20 fonts (1097 KB)PASS
Web fonts
20
1097 KB total
Render-blocking
0
of 20
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- 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 ~635 KB and ~1270 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Google Cloud
Network Waterfall164 requests over 7662msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.pendo.io www.pendo.io | Other | 2990ms | 80 KB | 95% | $40/mo | Costly |
www.pendo.io www.pendo.io | Other | 839ms | 45 KB | — | $11/mo | Costly |
Unattributable Unattributable | Other | 584ms | 0 KB | — | $8/mo | Costly |
www.pendo.io www.pendo.io | Other | 490ms | 166 KB | — | $7/mo | Costly |
www.pendo.io www.pendo.io | Other | 153ms | 18 KB | — | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 100ms | 200 KB | 35% | $1/mo | Optional |
www.pendo.io www.pendo.io | Other | 99ms | 55 KB | — | $1/mo | Optional |
www.pendo.io www.pendo.io | Other | 95ms | 3 KB | — | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 82ms | 176 KB | 47% | $1/mo | Optional |
www.pendo.io www.pendo.io | Other | 73ms | 5 KB | — | $1/mo | Optional |
www.pendo.io www.pendo.io | Other | 57ms | 21 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- www.pendo.io adds 2990ms and costs ~$40/month
- www.pendo.io adds 839ms and costs ~$11/month
- Unattributable adds 584ms and costs ~$8/month
- www.pendo.io adds 490ms and costs ~$7/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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.pendo.io takes 2990ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
95% of www.pendo.io's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
www.pendo.io takes 839ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Unattributable takes 584ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.pendo.io takes 490ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev