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Disclaimer: Star Stack provides information about European technology services for educational purposes only. Service listings, sovereignty assessments, and recommendations do not constitute legal, financial, or professional advice. We encourage you to verify all information independently and consult appropriate professionals before making technology decisions. Star Stack is not affiliated with any listed services unless explicitly stated.

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Partytown | Star Stack

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Partytown

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Partytown

Name: Partytown
Author: Star Stack

Visit Website GitHub 13.8K

About

Lazy-loaded library that relocates resource-intensive third-party scripts (analytics, ads, etc.) to web workers, freeing the main thread for application code. Improves Core Web Vitals and site performance.

Resources

No migration guide is currently listed for this service.

Suggest a migration guide or report an outdated link.

Sovereignty Score

Recorded assessment version: jurisdiction-ownership-2026-10-04

out of 100

Data completeness50% (Partial)

Jurisdictional(56%)

Significant foreign legal exposure risk

Jurisdiction: United States (EU adequacy decision)
No foreign parent provider
Five Eyes intelligence alliance exposure
US CLOUD Act applies (US can compel data access regardless of storage location)

Ownership(44%)

Significant foreign ownership or control risk

Mixed ownership (<30% non-EU)
Series B funding
Acquisition risk unknown (assumed high) (Submit verified data to improve this score)

More dimensions coming soon

GovernanceComing soon

PortabilityComing soon

LicenseComing soon

CommunityComing soon

How missing data affects scores Submit data corrections

Provider

Builder.io, Inc.

Quick Facts

Legal jurisdiction: United States
Headquarters: United States
Ownership: Mixed (<30% Non-EU)
Deployment: SaaS

Evidence and freshness

Verification date unknown. This assessment needs review.

A score is an assessment of recorded facts. Missing evidence and unresolved ownership can affect the result.

hqCountry: other
Retrieved 30/01/2026, confidence 90%.
Read evidence excerpt
Builder.io San Francisco Office: Careers, Perks + Culture
hqCountry: other
Retrieved 30/01/2026, confidence 90%.
Read evidence excerpt
Builder.io San Francisco Office: Careers, Perks + Culture