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🔬 Lab Findings 🔧 Stack Builder

Performance Apps for Shopify — Performance Ranked

9 benchmarked page speed and storefront performance apps, ranked by real JavaScript overhead measured in StackConflict's clean-room lab.

9 Apps benchmarked
6 Grade A or B
25 ms Avg CPU cost
100 ms Avg mobile CPU
FASTEST

TrackJS is the lightest page speed and storefront performance app we've tested — 28.61 KB payload and 4 ms CPU (Grade A).

No apps match your search.
#1
A
TrackJS
by TrackJS
📦 28.61 KB
⚡ 4 ms desktop
📱 18 ms mobile ✓
📐 Layout stable
Lightweight
#2
B
ADCELL
by Firstlead GmbH
📦 64.05 KB
⚡ 11 ms desktop
📱 65 ms mobile ✓
Acceptable
#3
B
Agentio
by Agentio
📦 80.98 KB
⚡ 12 ms desktop
📱 29 ms mobile ✓
📐 Layout stable
Acceptable
#4
B
ClickCease
by CHEQ
📦 141.81 KB
⚡ 10 ms desktop
📱 13 ms mobile ✓
📐 Layout stable
Acceptable
#5
B
Mida.so
by Mida
📦 57.28 KB
⚡ 41 ms desktop
📱 103 ms mobile ✓
Acceptable
#6
B
Skimlinks
by Taboola
📦 48.77 KB
⚡ 35 ms desktop
📱 217 ms mobile ✓
Acceptable
#7
C
Cool Image Magnifier
by Cool Image Magnifier
📦 172.1 KB
⚡ 46 ms desktop
📱 144 ms mobile ✓
Heavy
#8
C
FastEdge
by FastEdge
📦 189.6 KB
⚡ 28 ms desktop
📱 105 ms mobile ✓
Heavy
#9
C
Noibu
by Noibu
📦 174.95 KB
⚡ 36 ms desktop
📱 138 ms mobile ✓
Heavy

How we measure — Each app is injected into a clean Shopify dev store in a Playwright-controlled browser with no other apps installed. V8 CPU cost is the ScriptDuration delta before and after injection. Mobile estimate applies Google Lighthouse's 4× slowdown factor.

Read the full methodology →