Dead simple Object schema validation
Yup is dead simple Object schema validation. Licensed under MIT, it is very popular in the JavaScript ecosystem with 10.0M weekly downloads.
Yup has an good overall health score of 67/100. Its strongest dimension is popularity (100/100), while maintenance (40/100) is the area with most room for improvement. This package is in good shape overall.
Zod vs Yup in 2026: TypeScript inference, bundle size, and performance compared. Zod is 3x faster with zero config TS support. Full API comparison inside.
2026-03-28T00:00:00.000ZValibot is 0.8KB vs Zod at 12KB. Zod infers TypeScript types automatically. Yup is the migration-safe choice. Which schema validation library to use in 2026.
2026-03-17T00:00:00.000ZThere are 47 ways to validate a form in JavaScript. 12 different HTTP clients. 8 competing state managers. Is the fragmentation a problem — or the feature.
2026-03-08T00:00:00.000Z