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https://smallpdf.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
79
GRADE
C
FIX
3
REVIEW
4
PASS
8
INFO
2

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

Mobile Desktop
63
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
98
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.
100
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.

1.26 s

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

3.17 s

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

2.18 s

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

0.091

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

1.76 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.

10.33 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
17
8 PASS 4 REVIEW 3 FIX
D
Third-Party Impact
Action
85% third-party, 0 ms blocking
FIX
85% third-party, 0 ms blocking
Warning::
Third-party code accounts for 85% of page weight (994.2 KiB of 1.1 MiB)
Info::
Third-party blocking time is low (0 ms)
15%
85%
First-party Third-party
F
JS Execution Cost
Action
4879ms total JS execution
FIX
4879ms total JS execution
Warning::
https://s.smallpdf.com/static/landing-31c1aa5598d6...: 2039ms CPU time
Warning::
https://smallpdf.com/: 1048ms CPU time
Warning::
Unattributable: 773ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-DEQW...: 537ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-109...: 358ms CPU time
Warning::
Third-party scripts: 3831ms (79% of total)

Main Thread Breakdown

Script Evaluation 60% Other 15% Style & Layout 10% Script Parsing & Compilation 10%
ScriptTotalScriptingParse/CompileParty
https://s.smallpdf.com/static/landing-31c1aa5598d6b4c0-entrypoint.js2039ms1704ms240ms3rd
https://smallpdf.com/1048ms138ms88ms1st
Unattributable773ms217ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-DEQWE69FLT537ms443ms86ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-10944410766&cx=c&gtm=4e64k1358ms292ms63ms3rd
https://s.smallpdf.com/static/track-js-ae7e76ba181a7222-entrypoint.js124ms114ms5ms3rd
D
JS Bundles
Action
4 scripts, 311 KB unused
FIX
4 scripts, 311 KB unused
Warning::
https://s.smallpdf.com/static/landing-31c1aa5598d6...: 182 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-109...: 65 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-DEQW...: 64 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 311 KB
311 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://s.smallpdf.com/static/landing-31c1aa5598d6b4c0-entrypoint.js379 KB182 KB (48%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-10944410766&cx=c&gtm=4e64k1143 KB65 KB (45%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-DEQWE69FLT170 KB64 KB (38%)✓3rd
https://s.smallpdf.com/static/track-js-ae7e76ba181a7222-entrypoint.js11 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

B
Page Weight Budget
1.1 MB transferred, 37 requests
REVIEW
1.1 MB transferred, 37 requests
Info::
Page weighs 3.2 MB (1.1 MB transferred)
Warning::
JavaScript is 703 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 703 KB
Info::
37 HTTP requests
Info::
Estimated 0.24 g CO2 per page load
1.1 MB / 2.4 MB budget
1.1 MB transferred
37 requests
0.24 g CO2 per page load
JavaScript 702.6 KiB 60%
Fonts 147.3 KiB 13%
Images 137.8 KiB 12%
Other 101.5 KiB 9%
HTML 81.6 KiB 7%
Other 5.2 KiB 0%
Other 0 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

B
Image Optimization
10 images, 0 KB saveable
REVIEW
10 images, 0 KB saveable
Warning::
https://s.smallpdf.com/static/b68657960289ab68.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
10 images 138 KB
0 oversized -0 KB
9 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

B
Page Weight Inventory
37 resources · 1.1 MB · 311 KB savings available
REVIEW
37 resources · 1.1 MB · 311 KB savings available
Warning::
Page weight 152 KB over 1MB target
Got: 1.1 MB Expected: ≤ 1 MB
Info::
~311 KB of savings available
Warning::
35 third-party resources (85% of weight)
Info::
1 resources over 200KB
37 resources · 1.1 MiB · 35 third-party 152.0 KiB over 1MB target
JavaScript 60% · 702.6 KiB
Image 20% · 239.3 KiB
Font 13% · 147.3 KiB
Document 7% · 81.6 KiB
Other 0% · 5.2 KiB

~310.7 KiB of savings available

Remove unused JavaScript: 310.7 KiB
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
2 fonts (147 KB)
PASS
2 fonts (147 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

147 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 1.0 s 2.0 s 3.0 s FCP 1.3 s LCP 3.2 shttps://s.smallpdf.com/static/94d14575eec6442d.woff294d14575eec6442d.woff2 https://s.smallpdf.com/static/94d14575eec6442d.woff2 — 73.8 KiB — 16 ms — font-display: swaphttps://s.smallpdf.com/static/5121418e4f99b47c.woff25121418e4f99b47c.woff2 https://s.smallpdf.com/static/5121418e4f99b47c.woff2 — 73.5 KiB — 18 ms — font-display: swap
94d14575eec6442d.woff2 woff2 swap
Size 74 KB
Load time 16 ms
Start 145 ms
Risk FOUT — text flashes from fallback to web font
5121418e4f99b47c.woff2 woff2 swap
Size 74 KB
Load time 18 ms
Start 198 ms
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
6 hints, 0 missing preconnects
PASS
6 hints, 0 missing preconnects
Info::
Page uses 6 resource hint(s)

Current Resource Hints

preconnect
3
preload
3
dns-prefetch
—
prefetch
—

6 resource hints configured

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
A+
HTTP Caching
max-age=300 (5 minutes)
PASS
max-age=300 (5 minutes)
Info::
Cache-Control header is set
Got: public, max-age=300, must-revalidate
Info::
Effective TTL: 5 minutes (max-age=300)
Info::
ETag present — enables conditional (304) responses
Cache-Control

public, max-age=300, must-revalidate

DirectiveValueMeaning
public—Any cache may store this response
max-age300Cache for 5 minutes
must-revalidate—Must recheck with server after expiry
Effective TTL: 300 seconds
Network Waterfall
37 requests over 2969ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.3 s LCP 3.2 shttps://smallpdf.com// https://smallpdf.com/ — 200 — 81.6 KiB — 24 ms — h2https://s.smallpdf.com/static/40d7d8365bc6e925.svgs.smallpdf.com/static/40d7d8365bc6e... https://s.smallpdf.com/static/40d7d8365bc6e925.svg — 200 — 1.3 KiB — 40 ms — h2https://s.smallpdf.com/static/bd7581cc63cf9d0b.svgs.smallpdf.com/static/bd7581cc63cf9... https://s.smallpdf.com/static/bd7581cc63cf9d0b.svg — 200 — 1.9 KiB — 42 ms — h2https://s.smallpdf.com/static/b68657960289ab68.svgs.smallpdf.com/static/b68657960289a... https://s.smallpdf.com/static/b68657960289ab68.svg — 200 — 85.4 KiB — 51 ms — h2https://api.wordlift.io/data/https/smallpdf.com/api.wordlift.io/data/https/smallpdf... https://api.wordlift.io/data/https/smallpdf.com/ — 200 — 1.9 KiB — 46 ms — h2https://s.smallpdf.com/static/4f1cf8e8f9da22d9.svgs.smallpdf.com/static/4f1cf8e8f9da2... https://s.smallpdf.com/static/4f1cf8e8f9da22d9.svg — 200 — 1.1 KiB — 23 ms — h2https://s.smallpdf.com/static/landing-31c1aa5598d6b4c0-entrypoint.jss.smallpdf.com/static/landing-31c1a... https://s.smallpdf.com/static/landing-31c1aa5598d6b4c0-entrypoint.js — 200 — 378.7 KiB — 43 ms — h2https://s.smallpdf.com/static/94d14575eec6442d.woff2s.smallpdf.com/static/94d14575eec64... https://s.smallpdf.com/static/94d14575eec6442d.woff2 — 200 — 73.8 KiB — 16 ms — h3https://s.smallpdf.com/static/1c236de72419904c.svgs.smallpdf.com/static/1c236de724199... https://s.smallpdf.com/static/1c236de72419904c.svg — 200 — 7.9 KiB — 16 ms — h3https://s.smallpdf.com/static/ef11cdb756ac0c94.svgs.smallpdf.com/static/ef11cdb756ac0... https://s.smallpdf.com/static/ef11cdb756ac0c94.svg — 200 — 12.2 KiB — 18 ms — h3https://s.smallpdf.com/static/e757d142d82020fc.svgs.smallpdf.com/static/e757d142d8202... https://s.smallpdf.com/static/e757d142d82020fc.svg — 200 — 6.7 KiB — 19 ms — h3https://s.smallpdf.com/static/5121418e4f99b47c.woff2s.smallpdf.com/static/5121418e4f99b... https://s.smallpdf.com/static/5121418e4f99b47c.woff2 — 200 — 73.5 KiB — 18 ms — h3https://s.smallpdf.com/static/52eca0e9f9095f05.svgs.smallpdf.com/static/52eca0e9f9095... https://s.smallpdf.com/static/52eca0e9f9095f05.svg — 200 — 21.1 KiB — 8 ms — h3data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7data:image/gif;base64,R0lGODlhAQABA... data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7 — 200 — 0 B — 0 ms — datahttps://pluto.smallpdf.com/timestamppluto.smallpdf.com/timestamp https://pluto.smallpdf.com/timestamp — 200 — 191 B — 73 ms — h2https://pro.smallpdf.com/geoippro.smallpdf.com/geoip https://pro.smallpdf.com/geoip — 200 — 272 B — 51 ms — h2https://www.googletagmanager.com/gtag/js?id=G-DEQWE69FLTwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-DEQWE69FLT — 200 — 169.9 KiB — 40 ms — h2https://s.smallpdf.com/static/track-js-ae7e76ba181a7222-entrypoint.jss.smallpdf.com/static/track-js-ae7e... https://s.smallpdf.com/static/track-js-ae7e76ba181a7222-entrypoint.js — 200 — 10.6 KiB — 6 ms — h3https://pluto.smallpdf.com/v1/local-token-cookiepluto.smallpdf.com/v1/local-token-c... https://pluto.smallpdf.com/v1/local-token-cookie — 200 — 283 B — 69 ms — h2https://s.smallpdf.com/static/874e8fae7f2a5b03.svgs.smallpdf.com/static/874e8fae7f2a5... https://s.smallpdf.com/static/874e8fae7f2a5b03.svg — 200 — 1.3 KiB — 6 ms — h3https://pluto.smallpdf.com/v2/plutopluto.smallpdf.com/v2/pluto https://pluto.smallpdf.com/v2/pluto — 200 — 162 B — 33 ms — h2https://region1.google-analytics.com/g/collect?v=2&tid=G-DEQWE69FLT&gtm=45je64k1v9192177504za200zd9192177504&_p=1776897330773&gcs=G100&gcd=13p3pPp2p5l1&npa=1&dma_cps=-&dma=1&_eu=EAAAAGA&are=1&cid=1577823819.1776897332&frm=0&ir=1&pscdl=denied&rcb=3&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938468~117266401~117512543&dl=https%3A%2F%2Fsmallpdf.com%2F&dt=Smallpdf%20-%20A%20Free%20Solution%20to%20all%20your%20PDF%20Problems&sid=1776897331&sct=1&seg=0&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&ep.store_gac=false&tfd=989region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-DEQWE69FLT&gtm=45je64k1v9192177504za200zd9192177504&_p=1776897330773&gcs=G100&gcd=13p3pPp2p5l1&npa=1&dma_cps=-&dma=1&_eu=EAAAAGA&are=1&cid=1577823819.1776897332&frm=0&ir=1&pscdl=denied&rcb=3&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938468~117266401~117512543&dl=https%3A%2F%2Fsmallpdf.com%2F&dt=Smallpdf%20-%20A%20Free%20Solution%20to%20all%20your%20PDF%20Problems&sid=1776897331&sct=1&seg=0&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&ep.store_gac=false&tfd=989 — 204 — 547 B — 52 ms — h2https://www.googletagmanager.com/gtag/js?id=AW-10944410766&cx=c&gtm=4e64k1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=AW-10944410766&cx=c&gtm=4e64k1 — 200 — 143.5 KiB — 37 ms — h2https://usage.trackjs.com/usage.gif?token=e077d0c6c2a0458181122426faed8af3&correlationId=f293bc7d-bd3e-4cf5-8ea8-70c7354fe310&application=smallpdf&x=b9c08806-092c-44c8-bcb0-231bda43c4ce&usage.trackjs.com/usage.gif?token=e... https://usage.trackjs.com/usage.gif?token=e077d0c6c2a0458181122426faed8af3&correlationId=f293bc7d-bd3e-4cf5-8ea8-70c7354fe310&application=smallpdf&x=b9c08806-092c-44c8-bcb0-231bda43c4ce& — 200 — 273 B — 291 ms — http/1.1https://smallpdf.com/favicon.ico?v=1/favicon.ico?v=1 https://smallpdf.com/favicon.ico?v=1 — 200 — 100.2 KiB — 17 ms — h2https://pro.smallpdf.com/v1/payments/recurly/plans?currency=EUR&country=NLpro.smallpdf.com/v1/payments/recurl... https://pro.smallpdf.com/v1/payments/recurly/plans?currency=EUR&country=NL — 204 — 0 B — 30 ms — h2https://pluto.smallpdf.com/v2/plutopluto.smallpdf.com/v2/pluto https://pluto.smallpdf.com/v2/pluto — 200 — 162 B — 37 ms — h2https://pro.smallpdf.com/v1/payments/recurly/plans?currency=EUR&country=NLpro.smallpdf.com/v1/payments/recurl... https://pro.smallpdf.com/v1/payments/recurly/plans?currency=EUR&country=NL — 200 — 437 B — 28 ms — h2https://pagead2.googlesyndication.com/ccm/collect?rcb=14&frm=0&en=page_view&dl=https%3A%2F%2Fsmallpdf.com%2F&scrsrc=www.googletagmanager.com&rnd=1929244045.1776897332&navt=n&npa=1&gtm=45be64k1v9188777980za200zb9192177504zd9192177504xec&gcs=G100&gcd=13p3p3p2p5l1&dma_cps=-&dma=1&tag_exp=0~115616985~115938466~115938469~117266401&apve=1&apvf=f&apvc=1&tids=AW-10944410766&tid=AW-10944410766&tft=1776897331798&tfd=1143pagead2.googlesyndication.com/ccm/c... https://pagead2.googlesyndication.com/ccm/collect?rcb=14&frm=0&en=page_view&dl=https%3A%2F%2Fsmallpdf.com%2F&scrsrc=www.googletagmanager.com&rnd=1929244045.1776897332&navt=n&npa=1&gtm=45be64k1v9188777980za200zb9192177504zd9192177504xec&gcs=G100&gcd=13p3p3p2p5l1&dma_cps=-&dma=1&tag_exp=0~115616985~115938466~115938469~117266401&apve=1&apvf=f&apvc=1&tids=AW-10944410766&tid=AW-10944410766&tft=1776897331798&tfd=1143 — 200 — 21 B — 27 ms — h3https://pluto.smallpdf.com/v2/plutopluto.smallpdf.com/v2/pluto https://pluto.smallpdf.com/v2/pluto — 200 — 162 B — 35 ms — h2
0 ms 1.0 s 2.0 s 3.0 s FCP 1.3 s LCP 3.2 shttps://smallpdf.com// https://smallpdf.com/ — 200 — 81.6 KiB — 24 ms — h2https://s.smallpdf.com/static/40d7d8365bc6e925.svgs.smallpdf.com/static/40d7d8365bc6e... https://s.smallpdf.com/static/40d7d8365bc6e925.svg — 200 — 1.3 KiB — 40 ms — h2https://s.smallpdf.com/static/bd7581cc63cf9d0b.svgs.smallpdf.com/static/bd7581cc63cf9... https://s.smallpdf.com/static/bd7581cc63cf9d0b.svg — 200 — 1.9 KiB — 42 ms — h2https://s.smallpdf.com/static/b68657960289ab68.svgs.smallpdf.com/static/b68657960289a... https://s.smallpdf.com/static/b68657960289ab68.svg — 200 — 85.4 KiB — 51 ms — h2https://api.wordlift.io/data/https/smallpdf.com/api.wordlift.io/data/https/smallpdf... https://api.wordlift.io/data/https/smallpdf.com/ — 200 — 1.9 KiB — 46 ms — h2https://s.smallpdf.com/static/4f1cf8e8f9da22d9.svgs.smallpdf.com/static/4f1cf8e8f9da2... https://s.smallpdf.com/static/4f1cf8e8f9da22d9.svg — 200 — 1.1 KiB — 23 ms — 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https://s.smallpdf.com/static/5121418e4f99b47c.woff2 — 200 — 73.5 KiB — 18 ms — h3https://s.smallpdf.com/static/52eca0e9f9095f05.svgs.smallpdf.com/static/52eca0e9f9095... https://s.smallpdf.com/static/52eca0e9f9095f05.svg — 200 — 21.1 KiB — 8 ms — h3data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7data:image/gif;base64,R0lGODlhAQABA... data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7 — 200 — 0 B — 0 ms — datahttps://pluto.smallpdf.com/timestamppluto.smallpdf.com/timestamp https://pluto.smallpdf.com/timestamp — 200 — 191 B — 73 ms — h2https://pro.smallpdf.com/geoippro.smallpdf.com/geoip https://pro.smallpdf.com/geoip — 200 — 272 B — 51 ms — h2https://www.googletagmanager.com/gtag/js?id=G-DEQWE69FLTwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-DEQWE69FLT — 200 — 169.9 KiB — 40 ms — h2https://s.smallpdf.com/static/track-js-ae7e76ba181a7222-entrypoint.jss.smallpdf.com/static/track-js-ae7e... 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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
79% of JavaScript execution is third-party
First-party Third-party 3831ms · 703KB · €61/mo
s.smallpdf.com
Other
Costly
Execution 2039ms
Transfer 379 KB
Unused 48%
Monthly Cost €33/mo
Unattributable
Other
Costly
Execution 773ms
Transfer 0 KB
Monthly Cost €12/mo
Google Tag Manager
Tag Manager
Costly
Execution 537ms
Transfer 170 KB
Unused 38%
Monthly Cost €9/mo
Google Tag Manager
Tag Manager
Costly
Execution 358ms
Transfer 143 KB
Unused 45%
Monthly Cost €6/mo
s.smallpdf.com
Other
Optional
Execution 124ms
Transfer 11 KB
Monthly Cost €2/mo

These scripts may cost more than they're worth

  • s.smallpdf.com adds 2039ms and costs ~€33/month
  • Unattributable adds 773ms and costs ~€12/month
  • Google Tag Manager adds 537ms and costs ~€9/month
  • Google Tag Manager adds 358ms and costs ~€6/month

79% 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

s.smallpdf.com takes 2039ms 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 773ms 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

Google Tag Manager takes 537ms 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

Google Tag Manager takes 358ms 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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