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https://synology.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
71
GRADE
C
FIX
5
REVIEW
3
PASS
5
INFO
2

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

Mobile Desktop
68
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
88
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.

1.91 s

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

3.28 s

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

87 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.056

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

2.76 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.

3.37 s

Page Load Progression

735 ms
1.5 s
2.2 s
2.9 s
3.7 s
4.4 s
5.1 s
5.9 s
Checks
15
5 PASS 3 REVIEW 5 FIX
F
Page Weight Budget
Action
5.9 MB transferred, 98 requests
FIX
5.9 MB transferred, 98 requests
Critical::
Page weighs 8.8 MB (5.9 MB transferred)
Warning::
Images are 3.5 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 3.5 MB
Warning::
JavaScript is 1.3 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.3 MB
Info::
98 HTTP requests
Info::
Estimated 1.2 g CO2 per page load
5.9 MB / 2.4 MB budget
5.9 MB transferred
98 requests
1.2 g CO2 per page load
Images 3.5 MiB 59%
JavaScript 1.3 MiB 22%
Other 683.5 KiB 11%
Fonts 150.8 KiB 2%
Other 141.8 KiB 2%
CSS 110.9 KiB 2%
Other 63.8 KiB 1%
HTML 38.5 KiB 1%
Other 1.8 KiB 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

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.

Why this matters

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

Source: web.dev

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 (5.9 MiB of 5.9 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Bundles
Action
47 scripts, 399 KB unused
FIX
47 scripts, 399 KB unused
Warning::
https://www.synology.com/js/vendor/dsygno/dsygno-v...: 140 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-PNP...: 80 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.synology.com/js/vendor-legacy.concat.j...: 43 KB unused (81%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.synology.com/build/assets/js/ask.DbvaE...: 38 KB unused (62%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.synology.com/js/vendor/dsygno/dsygno-v...: 37 KB unused (74%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 399 KB
399 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.synology.com/js/vendor/dsygno/dsygno-v3.50.0.js?v=040a0e316 KB140 KB (44%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PNPJHJ2175 KB80 KB (46%)✓3rd
https://www.synology.com/js/vendor-legacy.concat.js54 KB43 KB (81%)✓3rd
https://www.synology.com/build/assets/js/ask.DbvaElvo.js63 KB38 KB (62%)✓3rd
https://www.synology.com/js/vendor/dsygno/dsygno-v2.21.0.js51 KB37 KB (74%)✓3rd
https://www.synology.com/js/vendor/vue.global.js66 KB30 KB (46%)✓3rd
https://www.synology.com/build/assets/js/visible.vPb2yH2r.js69 KB28 KB (41%)✓3rd
https://www.synology.com/build/assets/js/ask.bGBl8PMY.js1 KB—✓3rd
https://www.synology.com/js/syno/home/ai-advisor.js?v=040a0e4 KB—✓3rd
https://www.synology.com/build/assets/js/translate.BzvSeT7C.js1 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

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

D
Page Weight Inventory
Action
98 resources · 5.9 MB · 399 KB savings available
FIX
98 resources · 5.9 MB · 399 KB savings available
Warning::
Page weight 4.9 MB over 1MB target
Got: 5.9 MB Expected: ≤ 1 MB
Info::
~399 KB of savings available
Warning::
97 third-party resources (100% of weight)
Info::
8 resources over 200KB
98 resources · 5.9 MiB · 97 third-party 4.9 MiB over 1MB target
Image 61% · 3.6 MiB
JavaScript 22% · 1.3 MiB
Media 11% · 683.5 KiB
Font 2% · 150.8 KiB
CSS 2% · 110.9 KiB
Other 1% · 65.6 KiB
Document 1% · 42.8 KiB

~398.7 KiB of savings available

Remove unused JavaScript: 398.7 KiB
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.

B
Image Optimization
26 images, 0 KB saveable
REVIEW
26 images, 0 KB saveable
Info::
All images are well-optimized
26 images 3.5 MB
0 oversized -0 KB
25 legacy format
0 missing dimensions CLS risk
C
JS Execution Cost
Action
1698ms total JS execution
REVIEW
1698ms total JS execution
Warning::
https://www.synology.com/js/vendor/splide-extensio...: 587ms CPU time
Warning::
https://www.synology.com/js/vendor/dsygno/dsygno-v...: 484ms CPU time
Info::
Unattributable: 177ms CPU time
Info::
https://www.synology.com/en-global: 141ms CPU time
Info::
https://www.synology.com/js/vendor/jquery.js: 118ms CPU time
Warning::
Third-party scripts: 1698ms (100% of total)

Main Thread Breakdown

Script Evaluation 41% Other 22% Style & Layout 17% Rendering 8% Parse HTML & CSS 7% Script Parsing & Compilation 3%
ScriptTotalScriptingParse/CompileParty
https://www.synology.com/js/vendor/splide-extension-auto-scroll/dist/js/splide-extension-auto-scroll.min.js587ms179ms0ms3rd
https://www.synology.com/js/vendor/dsygno/dsygno-v3.50.0.js?v=040a0e484ms243ms25ms3rd
Unattributable177ms11ms0ms3rd
https://www.synology.com/en-global141ms15ms2ms3rd
https://www.synology.com/js/vendor/jquery.js118ms67ms3ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PNPJHJ281ms67ms13ms3rd
https://www.synology.com/build/assets/js/main.DYnHygkW.js57ms56ms0ms3rd
https://www.synology.com/js/vendor/splide/dist/js/splide.js53ms27ms2ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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+
Font Loading
4 fonts (151 KB)
PASS
4 fonts (151 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

151 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s FCP 1.9 s LCP 3.3 shttps://synostatic.synology.com/font/inter/inter-w600-7.woff2inter-w600-7.woff2 https://synostatic.synology.com/font/inter/inter-w600-7.woff2 — 37.7 KiB — 77 ms — font-display: swaphttps://synostatic.synology.com/font/inter/inter-w400-7.woff2inter-w400-7.woff2 https://synostatic.synology.com/font/inter/inter-w400-7.woff2 — 37.7 KiB — 70 ms — font-display: swaphttps://synostatic.synology.com/font/inter/inter-w700-7.woff2inter-w700-7.woff2 https://synostatic.synology.com/font/inter/inter-w700-7.woff2 — 37.7 KiB — 36 ms — font-display: swaphttps://synostatic.synology.com/font/inter/inter-w500-7.woff2inter-w500-7.woff2 https://synostatic.synology.com/font/inter/inter-w500-7.woff2 — 37.7 KiB — 24 ms — font-display: swap
inter-w600-7.woff2 woff2 swap
Size 38 KB
Load time 77 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
inter-w400-7.woff2 woff2 swap
Size 38 KB
Load time 70 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
inter-w700-7.woff2 woff2 swap
Size 38 KB
Load time 36 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
inter-w500-7.woff2 woff2 swap
Size 38 KB
Load time 24 ms
Start 2.1 s
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+
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
98 requests over 3571ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.9 s LCP 3.3 shttps://synology.com// https://synology.com/ — 301 — 86 B — 314 ms — h2https://www.synology.com/www.synology.com/ https://www.synology.com/ — 302 — 4.2 KiB — 745 ms — h2https://www.synology.com/en-globalwww.synology.com/en-global https://www.synology.com/en-global — 200 — 37.6 KiB — 354 ms — h2https://www.synology.com/js/vendor/vue.global.jswww.synology.com/js/vendor/vue.glob... https://www.synology.com/js/vendor/vue.global.js — 200 — 66.2 KiB — 51 ms — h2https://www.synology.com/js/vendor/jquery.jswww.synology.com/js/vendor/jquery.j... https://www.synology.com/js/vendor/jquery.js — 200 — 35.0 KiB — 35 ms — h2https://www.synology.com/js/syno/dom_vue.jswww.synology.com/js/syno/dom_vue.js https://www.synology.com/js/syno/dom_vue.js — 200 — 713 B — 33 ms — h2https://www.synology.com/build/assets/css/synoec_item_relative.BTXA5I2k.csswww.synology.com/build/assets/css/s... https://www.synology.com/build/assets/css/synoec_item_relative.BTXA5I2k.css — 200 — 1.5 KiB — 50 ms — h2https://www.synology.com/build/assets/css/syno.C_X-bDCj.csswww.synology.com/build/assets/css/s... https://www.synology.com/build/assets/css/syno.C_X-bDCj.css — 200 — 66.1 KiB — 58 ms — h2https://www.synology.com/build/assets/js/syno_app.CVyVm6mx.jswww.synology.com/build/assets/js/sy... https://www.synology.com/build/assets/js/syno_app.CVyVm6mx.js — 200 — 9.3 KiB — 65 ms — h2https://www.synology.com/build/assets/js/general-components.BEt4FOpn.jswww.synology.com/build/assets/js/ge... https://www.synology.com/build/assets/js/general-components.BEt4FOpn.js — 200 — 12.0 KiB — 78 ms — h2https://www.synology.com/build/assets/js/visible.vPb2yH2r.jswww.synology.com/build/assets/js/vi... https://www.synology.com/build/assets/js/visible.vPb2yH2r.js — 200 — 69.1 KiB — 105 ms — h2https://www.synology.com/build/assets/js/chunks/_plugin-vue_export-helper.BCo6x5W8.jswww.synology.com/build/assets/js/ch... https://www.synology.com/build/assets/js/chunks/_plugin-vue_export-helper.BCo6x5W8.js — 200 — 496 B — 86 ms — h2https://www.synology.com/build/assets/js/chunks/synoec_item_relative.vue_vue_type_style_index_0_scoped_46094ac8_lang.BjokzayP.jswww.synology.com/build/assets/js/ch... https://www.synology.com/build/assets/js/chunks/synoec_item_relative.vue_vue_type_style_index_0_scoped_46094ac8_lang.BjokzayP.js — 200 — 13.7 KiB — 82 ms — h2https://www.synology.com/build/assets/css/ask.C3uIAlIP.csswww.synology.com/build/assets/css/a... https://www.synology.com/build/assets/css/ask.C3uIAlIP.css — 200 — 7.6 KiB — 56 ms — h2https://www.synology.com/build/assets/css/main.XD0Ebkb-.csswww.synology.com/build/assets/css/m... https://www.synology.com/build/assets/css/main.XD0Ebkb-.css — 200 — 2.7 KiB — 53 ms — h2https://www.synology.com/build/assets/js/main.DYnHygkW.jswww.synology.com/build/assets/js/ma... https://www.synology.com/build/assets/js/main.DYnHygkW.js — 200 — 8.8 KiB — 73 ms — h2https://www.synology.com/build/assets/js/translate.BzvSeT7C.jswww.synology.com/build/assets/js/tr... https://www.synology.com/build/assets/js/translate.BzvSeT7C.js — 200 — 725 B — 53 ms — h2https://www.synology.com/build/assets/js/ask.DbvaElvo.jswww.synology.com/build/assets/js/as... https://www.synology.com/build/assets/js/ask.DbvaElvo.js — 200 — 62.6 KiB — 110 ms — h2https://www.synology.com/build/assets/js/ask.bGBl8PMY.jswww.synology.com/build/assets/js/as... https://www.synology.com/build/assets/js/ask.bGBl8PMY.js — 200 — 1.3 KiB — 96 ms — h2https://www.synology.com/build/assets/js/google-analysis.Bzkmkkxw.jswww.synology.com/build/assets/js/go... https://www.synology.com/build/assets/js/google-analysis.Bzkmkkxw.js — 200 — 597 B — 77 ms — h2https://www.synology.com/build/assets/js/question-list.B27OhGMd.jswww.synology.com/build/assets/js/qu... https://www.synology.com/build/assets/js/question-list.B27OhGMd.js — 200 — 497 B — 83 ms — h2https://www.synology.com/build/assets/js/translate.CIecexaw.jswww.synology.com/build/assets/js/tr... https://www.synology.com/build/assets/js/translate.CIecexaw.js — 200 — 728 B — 86 ms — h2https://www.synology.com/build/assets/js/chunks/punycode.es6.CEshK6jf.jswww.synology.com/build/assets/js/ch... https://www.synology.com/build/assets/js/chunks/punycode.es6.CEshK6jf.js — 200 — 30.7 KiB — 99 ms — h2https://www.synology.com/build/assets/js/chunks/_commonjsHelpers.lGe4XDVY.jswww.synology.com/build/assets/js/ch... https://www.synology.com/build/assets/js/chunks/_commonjsHelpers.lGe4XDVY.js — 200 — 579 B — 88 ms — h2https://www.synology.com/build/assets/js/resource-identity.DHJFy5tE.jswww.synology.com/build/assets/js/re... https://www.synology.com/build/assets/js/resource-identity.DHJFy5tE.js — 200 — 848 B — 90 ms — h2https://www.synology.com/build/assets/js/question.Br8G45pI.jswww.synology.com/build/assets/js/qu... https://www.synology.com/build/assets/js/question.Br8G45pI.js — 200 — 599 B — 109 ms — h2https://www.synology.com/js/vendor/dsygno/dsygno-v2.21.0.jswww.synology.com/js/vendor/dsygno/d... https://www.synology.com/js/vendor/dsygno/dsygno-v2.21.0.js — 200 — 51.3 KiB — 118 ms — h2https://www.synology.com/js/vendor/dsygno/dsygno-v2.21.0.css?v=6fe208www.synology.com/js/vendor/dsygno/d... https://www.synology.com/js/vendor/dsygno/dsygno-v2.21.0.css?v=6fe208 — 200 — 19.1 KiB — 76 ms — h2https://www.synology.com/js/vendor/dsygno/dsygno-v3.50.0.css?v=6fe208www.synology.com/js/vendor/dsygno/d... https://www.synology.com/js/vendor/dsygno/dsygno-v3.50.0.css?v=6fe208 — 200 — 3.6 KiB — 54 ms — h2https://www.synology.com/js/vendor/dsygno/dsygno-vue-v3.46.0.css?v=6fe208www.synology.com/js/vendor/dsygno/d... https://www.synology.com/js/vendor/dsygno/dsygno-vue-v3.46.0.css?v=6fe208 — 200 — 4.1 KiB — 57 ms — h2
0 ms 1.0 s 2.0 s 3.0 s FCP 1.9 s LCP 3.3 shttps://synology.com// https://synology.com/ — 301 — 86 B — 314 ms — h2https://www.synology.com/www.synology.com/ https://www.synology.com/ — 302 — 4.2 KiB — 745 ms — h2https://www.synology.com/en-globalwww.synology.com/en-global https://www.synology.com/en-global — 200 — 37.6 KiB — 354 ms — h2https://www.synology.com/js/vendor/vue.global.jswww.synology.com/js/vendor/vue.glob... https://www.synology.com/js/vendor/vue.global.js — 200 — 66.2 KiB — 51 ms — h2https://www.synology.com/js/vendor/jquery.jswww.synology.com/js/vendor/jquery.j... https://www.synology.com/js/vendor/jquery.js — 200 — 35.0 KiB — 35 ms — h2https://www.synology.com/js/syno/dom_vue.jswww.synology.com/js/syno/dom_vue.js https://www.synology.com/js/syno/dom_vue.js — 200 — 713 B — 33 ms — h2https://www.synology.com/build/assets/css/synoec_item_relative.BTXA5I2k.csswww.synology.com/build/assets/css/s... https://www.synology.com/build/assets/css/synoec_item_relative.BTXA5I2k.css — 200 — 1.5 KiB — 50 ms — h2https://www.synology.com/build/assets/css/syno.C_X-bDCj.csswww.synology.com/build/assets/css/s... https://www.synology.com/build/assets/css/syno.C_X-bDCj.css — 200 — 66.1 KiB — 58 ms — h2https://www.synology.com/build/assets/js/syno_app.CVyVm6mx.jswww.synology.com/build/assets/js/sy... https://www.synology.com/build/assets/js/syno_app.CVyVm6mx.js — 200 — 9.3 KiB — 65 ms — h2https://www.synology.com/build/assets/js/general-components.BEt4FOpn.jswww.synology.com/build/assets/js/ge... https://www.synology.com/build/assets/js/general-components.BEt4FOpn.js — 200 — 12.0 KiB — 78 ms — h2https://www.synology.com/build/assets/js/visible.vPb2yH2r.jswww.synology.com/build/assets/js/vi... https://www.synology.com/build/assets/js/visible.vPb2yH2r.js — 200 — 69.1 KiB — 105 ms — h2https://www.synology.com/build/assets/js/chunks/_plugin-vue_export-helper.BCo6x5W8.jswww.synology.com/build/assets/js/ch... https://www.synology.com/build/assets/js/chunks/_plugin-vue_export-helper.BCo6x5W8.js — 200 — 496 B — 86 ms — h2https://www.synology.com/build/assets/js/chunks/synoec_item_relative.vue_vue_type_style_index_0_scoped_46094ac8_lang.BjokzayP.jswww.synology.com/build/assets/js/ch... https://www.synology.com/build/assets/js/chunks/synoec_item_relative.vue_vue_type_style_index_0_scoped_46094ac8_lang.BjokzayP.js — 200 — 13.7 KiB — 82 ms — h2https://www.synology.com/build/assets/css/ask.C3uIAlIP.csswww.synology.com/build/assets/css/a... https://www.synology.com/build/assets/css/ask.C3uIAlIP.css — 200 — 7.6 KiB — 56 ms — h2https://www.synology.com/build/assets/css/main.XD0Ebkb-.csswww.synology.com/build/assets/css/m... https://www.synology.com/build/assets/css/main.XD0Ebkb-.css — 200 — 2.7 KiB — 53 ms — h2https://www.synology.com/build/assets/js/main.DYnHygkW.jswww.synology.com/build/assets/js/ma... https://www.synology.com/build/assets/js/main.DYnHygkW.js — 200 — 8.8 KiB — 73 ms — h2https://www.synology.com/build/assets/js/translate.BzvSeT7C.jswww.synology.com/build/assets/js/tr... https://www.synology.com/build/assets/js/translate.BzvSeT7C.js — 200 — 725 B — 53 ms — h2https://www.synology.com/build/assets/js/ask.DbvaElvo.jswww.synology.com/build/assets/js/as... https://www.synology.com/build/assets/js/ask.DbvaElvo.js — 200 — 62.6 KiB — 110 ms — h2https://www.synology.com/build/assets/js/ask.bGBl8PMY.jswww.synology.com/build/assets/js/as... https://www.synology.com/build/assets/js/ask.bGBl8PMY.js — 200 — 1.3 KiB — 96 ms — h2https://www.synology.com/build/assets/js/google-analysis.Bzkmkkxw.jswww.synology.com/build/assets/js/go... https://www.synology.com/build/assets/js/google-analysis.Bzkmkkxw.js — 200 — 597 B — 77 ms — h2https://www.synology.com/build/assets/js/question-list.B27OhGMd.jswww.synology.com/build/assets/js/qu... https://www.synology.com/build/assets/js/question-list.B27OhGMd.js — 200 — 497 B — 83 ms — 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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 1698ms · 601KB · €18/mo
www.synology.com
Other
Costly
Execution 587ms
Transfer 3 KB
Monthly Cost €6/mo
www.synology.com
Other
Costly
Execution 484ms
Transfer 316 KB
Unused 44%
Monthly Cost €5/mo
Unattributable
Other
Optional
Execution 177ms
Transfer 0 KB
Monthly Cost €2/mo
www.synology.com
Other
Optional
Execution 141ms
Transfer 38 KB
Monthly Cost €2/mo
www.synology.com
Other
Optional
Execution 118ms
Transfer 35 KB
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Optional
Execution 81ms
Transfer 175 KB
Unused 46%
Monthly Cost €1/mo
www.synology.com
Other
Optional
Execution 57ms
Transfer 9 KB
Monthly Cost €1/mo
www.synology.com
Other
Optional
Execution 53ms
Transfer 26 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.synology.com adds 587ms and costs ~€6/month
  • www.synology.com adds 484ms and costs ~€5/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.synology.com takes 587ms 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

www.synology.com takes 484ms 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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