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.
610 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
927 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
414 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.062
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.44 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.
4.03 s
Page Load Progression
FPage Weight BudgetAction2.7 MB transferred, 179 requestsFIX
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
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
DJS Execution CostAction3325ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://openvpn.net/ | 862ms | 15ms | 9ms | 1st |
| https://openvpn.net/_next/static/chunks/0clvsjvitp7ys.js | 608ms | 537ms | 8ms | 1st |
| Unattributable | 493ms | 20ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NQCSCZG | 303ms | 260ms | 22ms | 3rd |
| https://cmp.osano.com/16BV95T11hbIe1XG6/a94a5ee0-e470-41e9-8b15-db30380e4555/osano.js | 264ms | 234ms | 9ms | 3rd |
| https://js.hs-analytics.net/analytics/1776893100000/43411546.js | 186ms | 122ms | 3ms | 3rd |
| https://static.zdassets.com/web_widget/messenger/latest/web-widget-main-22a6ed7.js | 165ms | 133ms | 21ms | 3rd |
| https://openvpn.net/_next/static/chunks/0dps3hzzry71~.js | 95ms | 75ms | 20ms | 1st |
| https://static.zdassets.com/web_widget/messenger/latest/web-widget-locales/messenger/en-us-json-22a6ed7.js | 87ms | 81ms | 1ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-SPGM8Y8Y79&cx=c>m=4e64k0 | 82ms | 49ms | 17ms | 3rd |
Showing top 10 of 13 scripts
FJS BundlesAction66 scripts, 635 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://openvpn.net/_next/static/chunks/0dps3hzzry71~.js | 177 KB | 135 KB (77%) | ✓ | 1st |
| https://static.zdassets.com/web_widget/messenger/latest/web-widget-main-22a6ed7.js | 218 KB | 105 KB (48%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-SPGM8Y8Y79&cx=c>m=4e64k0 | 170 KB | 68 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-W3DL2JV | 174 KB | 60 KB (35%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-E45Z33NTV7&cx=c>m=4e64k0 | 144 KB | 60 KB (41%) | ✓ | 3rd |
| https://cdn.jsdelivr.net/gh/OpenVPN/website-js-cdn@main/site-search.js | 85 KB | 56 KB (66%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NQCSCZG | 180 KB | 53 KB (29%) | ✓ | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 57 KB | 36 KB (64%) | ✓ | 3rd |
| https://openvpn.net/_next/static/chunks/0clvsjvitp7ys.js | 71 KB | 22 KB (31%) | ✓ | 1st |
| https://openvpn.net/_next/static/chunks/0ris2il831_w2.js | 36 KB | 21 KB (57%) | ✓ | 1st |
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 InventoryAction179 resources · 2.7 MB · 635 KB savings availableFIX
~635.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 179 resources | 2.7 MiB | ||||||
BThird-Party Impact49% third-party, 0 ms blockingREVIEW
CImage OptimizationAction82 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
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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading1 fonts (47 KB)PASS
Web fonts
1
47 KB total
Render-blocking
0
of 1
Dominant font-display
swap
Most common across fonts
Font loading timeline
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+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: Cloudflare
A+HTTP Cachingmax-age=18000 (5 hours)PASS
public, max-age=18000
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 18000 | Cache for 5 hours |
Network Waterfall179 requests over 4031msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 493ms | 0 KB | — | €8/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 303ms | 180 KB | 29% | €5/mo | Costly |
cmp.osano.com cmp.osano.com | Other | 264ms | 65 KB | 31% | €4/mo | Costly |
HubSpot Analytics js.hs-analytics.net | Analytics | 186ms | 42 KB | — | €3/mo | Optional |
Zendesk Widget static.zdassets.com | Customer Support | 165ms | 218 KB | 48% | €3/mo | Optional |
Zendesk Widget static.zdassets.com | Customer Support | 87ms | 5 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 82ms | 170 KB | 40% | €1/mo | Optional |
Microsoft Clarity scripts.clarity.ms | Session Replay | 71ms | 26 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 52ms | 144 KB | 41% | €1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 493ms and costs ~€8/month
- Google Tag Manager adds 303ms and costs ~€5/month
- cmp.osano.com adds 264ms and costs ~€4/month
51% of JavaScript execution time comes from third-party scripts.
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
Unattributable takes 493ms 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
Google Tag Manager takes 303ms 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
cmp.osano.com takes 264ms 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