How much each Shopify app slows a store

We measured every app that loads on the homepages of 604 Shopify ecommerce stores. Each app below was found on at least 20 of them. Its band is the processing time it added on the typical store.

The most recent check in the index ran on September 26, 2026.

How we measure these numbers

ShopWeight isn't affiliated with Shopify or with any app maker listed here.

App	What it does	Typical processing time	Stores measured
Signifyd	Fraud and bot protection	Very heavy (over 1 second)	36
Osano	Cookie consent and privacy	Very heavy (over 1 second)	31
Alia	Pop-ups and forms	Heavy (300 ms to 1 second)	85
Smile	Loyalty, rewards and referrals	Heavy (300 ms to 1 second)	24
Noibu	Error and speed monitoring	Heavy (300 ms to 1 second)	21
POWR	Other store features	Heavy (300 ms to 1 second)	21
Rebuy	Personalization and recommendations	Heavy (300 ms to 1 second)	135
Google tag (gtag.js)	Tag manager	Heavy (300 ms to 1 second)	546
Gorgias	Customer support and chat	Heavy (300 ms to 1 second)	198
Fingerprint (FingerprintJS)	Fraud and bot protection	Heavy (300 ms to 1 second)	40
Rivo	Loyalty, rewards and referrals	Heavy (300 ms to 1 second)	37
PayPal	Payments and pay later	Heavy (300 ms to 1 second)	26
Heatmap.com	Heatmaps and session recording	Heavy (300 ms to 1 second)	36
Swym Wishlist Plus	Wishlists	Heavy (300 ms to 1 second)	48
UserWay	Accessibility	Heavy (300 ms to 1 second)	47
Forter	Fraud and bot protection	Heavy (300 ms to 1 second)	57
Zendesk	Customer support and chat	Heavy (300 ms to 1 second)	44
Meta Pixel	Ad tracking	Heavy (300 ms to 1 second)	504
Klaviyo	Email and SMS marketing	Heavy (300 ms to 1 second)	496
accessiBe	Accessibility	Heavy (300 ms to 1 second)	90
Tolstoy	Social feeds and shoppable content	Heavy (300 ms to 1 second)	50
Microsoft Clarity	Heatmaps and session recording	Moderate (100 to 300 ms)	264
Google Tag Manager	Tag manager	Moderate (100 to 300 ms)	430
Yotpo	Reviews and ratings	Moderate (100 to 300 ms)	212
PostHog	Analytics	Moderate (100 to 300 ms)	23
Affirm	Payments and pay later	Moderate (100 to 300 ms)	22
Videowise	Video	Moderate (100 to 300 ms)	22
TikTok Pixel	Ad tracking	Moderate (100 to 300 ms)	180
Intelligems	A/B testing	Moderate (100 to 300 ms)	89
OneTrust	Cookie consent and privacy	Moderate (100 to 300 ms)	88
GRIN	Affiliate and influencer tracking	Moderate (100 to 300 ms)	28
Friendbuy	Loyalty, rewards and referrals	Moderate (100 to 300 ms)	25
Convert	A/B testing	Moderate (100 to 300 ms)	31
Consentmo GDPR Compliance	Cookie consent and privacy	Moderate (100 to 300 ms)	87
Blockify	Fraud and bot protection	Moderate (100 to 300 ms)	22
Kustomer	Customer support and chat	Moderate (100 to 300 ms)	29
Snap Pixel	Ad tracking	Moderate (100 to 300 ms)	83
LoyaltyLion	Loyalty, rewards and referrals	Moderate (100 to 300 ms)	29
Octane AI	Personalization and recommendations	Moderate (100 to 300 ms)	21
Klarna	Payments and pay later	Moderate (100 to 300 ms)	41
Littledata	Attribution and server-side tracking	Moderate (100 to 300 ms)	20
Visually	A/B testing	Moderate (100 to 300 ms)	37
Recharge	Subscriptions	Moderate (100 to 300 ms)	98
Criteo	Ad identity and retargeting	Moderate (100 to 300 ms)	29
Northbeam	Attribution and server-side tracking	Light (under 100 ms)	64
Hotjar	Heatmaps and session recording	Light (under 100 ms)	101
AppLovin	Ad tracking	Light (under 100 ms)	102
MinMaxify Order Limits	Order limits	Light (under 100 ms)	27
Taboola	Ad tracking	Light (under 100 ms)	27
Rise.ai	Loyalty, rewards and referrals	Light (under 100 ms)	59
LiveIntent	Ad identity and retargeting	Light (under 100 ms)	84
Afterpay	Payments and pay later	Light (under 100 ms)	49
Searchanise	Search and filters	Light (under 100 ms)	25
EG Auto Add to Cart Free Gift (EasyGift)	Discounts	Light (under 100 ms)	45
Superfiliate	Affiliate and influencer tracking	Light (under 100 ms)	27
Pandectes GDPR Compliance	Cookie consent and privacy	Light (under 100 ms)	58
PageFly AI Page Builder	Page builders and design	Light (under 100 ms)	21
Impact	Affiliate and influencer tracking	Light (under 100 ms)	71
Pinterest Tag	Ad tracking	Light (under 100 ms)	116
Bazaarvoice	Reviews and ratings	Light (under 100 ms)	73
MNTN	Ad tracking	Light (under 100 ms)	66
Nosto	Personalization and recommendations	Light (under 100 ms)	30
BugSnag	Error and speed monitoring	Light (under 100 ms)	20
Global-e	International selling	Light (under 100 ms)	51
NoFraud	Fraud and bot protection	Light (under 100 ms)	53
Shogun (Landing Page Builder)	Page builders and design	Light (under 100 ms)	36
X Ads	Ad tracking	Light (under 100 ms)	35
GOVX ID Exclusive Discounts	Discounts	Light (under 100 ms)	66
Reddit Ads	Ad tracking	Light (under 100 ms)	120
Google Analytics	Analytics	Light (under 100 ms)	61
Black Crow	Personalization and recommendations	Light (under 100 ms)	30
OpenAI Ads Measurement Pixel	Ad tracking	Light (under 100 ms)	64
Rakuten Advertising	Affiliate and influencer tracking	Light (under 100 ms)	49
StackAdapt	Ad tracking	Light (under 100 ms)	31
Tapcart	Other store features	Light (under 100 ms)	20
PebblePost	Ad identity and retargeting	Light (under 100 ms)	20
LinkedIn Insight Tag	Ad tracking	Light (under 100 ms)	32
SafeOpt	Ad identity and retargeting	Light (under 100 ms)	28
Spotify Pixel	Ad tracking	Light (under 100 ms)	21
Stamped.io	Reviews and ratings	Light (under 100 ms)	36
Back in Stock	Product page tools	Light (under 100 ms)	82
YouTube	Video	Light (under 100 ms)	31
Microsoft Advertising	Ad tracking	Light (under 100 ms)	258
Google Ads	Ad tracking	Light (under 100 ms)	380
Cloudflare Browser Insights	Error and speed monitoring	Light (under 100 ms)	27
Okendo	Reviews and ratings	Light (under 100 ms)	125
Amazon Advertising	Ad tracking	Light (under 100 ms)	79
ThreatMetrix	Fraud and bot protection	Light (under 100 ms)	36
Attentive	Email and SMS marketing	Light (under 100 ms)	139
UpSellit	Personalization and recommendations	Light (under 100 ms)	30
The Trade Desk	Ad tracking	Light (under 100 ms)	84
Judge.me	Reviews and ratings	Light (under 100 ms)	61
Awin	Affiliate and influencer tracking	Light (under 100 ms)	108
Datadog	Error and speed monitoring	Light (under 100 ms)	78
ShopMy	Affiliate and influencer tracking	Light (under 100 ms)	120
Lantern (R.O.EYE)		Light (under 100 ms)	66
SC Easy Redirects	Other store features	Light (under 100 ms)	42
ShareASale	Affiliate and influencer tracking	Light (under 100 ms)	32
Redo	Returns and exchanges	Light (under 100 ms)	65
Instant	Page builders and design	Light (under 100 ms)	25
Pepperjam	Affiliate and influencer tracking	Light (under 100 ms)	34
AfterShip Email Marketing	Email and SMS marketing	Light (under 100 ms)	25
Loop Returns	Returns and exchanges	Light (under 100 ms)	47
Elevar	Attribution and server-side tracking	Light (under 100 ms)	170
Instafeed	Social feeds and shoppable content	Light (under 100 ms)	67
Mailchimp	Email and SMS marketing	Light (under 100 ms)	24
Postscript	Email and SMS marketing	Light (under 100 ms)	59
Trustpilot	Reviews and ratings	Light (under 100 ms)	22
Powerful Contact Form Builder	Pop-ups and forms	Light (under 100 ms)	23
Wunderkind	Email and SMS marketing	Light (under 100 ms)	24
Shopify Forms	Pop-ups and forms	Light (under 100 ms)	30
Tatari	Ad tracking	Light (under 100 ms)	22
Social Snowball	Affiliate and influencer tracking	Light (under 100 ms)	21
TUNE	Affiliate and influencer tracking	Light (under 100 ms)	25
CJ Affiliate	Affiliate and influencer tracking	Light (under 100 ms)	24
HulkApps Form Builder	Pop-ups and forms	Light (under 100 ms)	31

The bar under each band shows how the app varied from store to store. Apps found on fewer than 20 stores aren't listed yet. The list grows as more stores are checked.

Browse by category

• Fastest Shopify A/B testing apps, ranked on live stores
• Fastest Shopify accessibility apps, ranked on live stores
• Fastest Shopify ad identity and retargeting tools, ranked on live stores
• Fastest Shopify ad tracking pixels, ranked on live stores
• Fastest Shopify affiliate and influencer apps, ranked on live stores
• Fastest Shopify analytics apps, ranked on live stores
• Fastest Shopify attribution and server-side tracking apps, ranked on live stores
• Fastest Shopify cookie consent apps, ranked on live stores
• Fastest Shopify customer support and chat apps, ranked on live stores
• Fastest Shopify discount apps, ranked on live stores
• Fastest Shopify email and SMS marketing apps, ranked on live stores
• Fastest Shopify error and speed monitoring tools, ranked on live stores
• Fastest Shopify fraud and bot protection apps, ranked on live stores
• Fastest Shopify heatmap and session recording apps, ranked on live stores
• Fastest Shopify loyalty and rewards apps, ranked on live stores
• Fastest Shopify other store apps, ranked on live stores
• Fastest Shopify page builder and design apps, ranked on live stores
• Fastest Shopify payment and pay-later apps, ranked on live stores
• Fastest Shopify personalization and recommendation apps, ranked on live stores
• Fastest Shopify pop-up and form apps, ranked on live stores
• Fastest Shopify returns apps, ranked on live stores
• Fastest Shopify review apps, ranked on live stores
• Fastest Shopify social feed and shoppable content apps, ranked on live stores
• Fastest Shopify tag managers, ranked on live stores
• Fastest Shopify video players, ranked on live stores

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