Yup
Object schema validation for JavaScript and TypeScript.
Pricing
Free tier
Flat rate
Adoption
↘CoolingLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is Yup?
Yup is a powerful object schema validator that provides an easy way to validate objects in JavaScript and TypeScript. It's widely used by developers to ensure data integrity before processing or storing it.
Key differentiator
“Yup stands out for its comprehensive set of validation methods and seamless integration into JavaScript and TypeScript projects, making it an ideal choice for developers who prioritize data integrity.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
Yup's extensive feature set and complex schema definition can be overwhelming, requiring significant time to master.
The official documentation lacks comprehensive guides for advanced use cases and troubleshooting common issues.
Upgrading to newer versions of Yup often requires significant code refactoring due to API changes, causing disruptions in development workflows.
Validation can become slow and resource-intensive when dealing with complex schemas or large volumes of data, impacting application performance.
Fit analysis
Who is it for?
✓ Best for
Developers working on TypeScript projects who need robust data validation.
Teams building complex forms that require extensive input validation.
Projects where consistent and reliable data validation is critical.
✕ Not a fit for
Scenarios requiring real-time data validation in a distributed system.
Applications with extremely high throughput where performance overhead matters.
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Next step
Get Started with Yup
Step-by-step setup guide with code examples and common gotchas.