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Dev tools · March 20, 2025

Valibot

The 1 kB schema library for TypeScript

Valibot launched on March 20, 2025 with 37 votes, #610 of 7,215 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.

What it does

I am excited to announce the release of Valibot v1, a 1 kB alternative to Zod with a type-safe and easy-to-remember API. Valibot is perfect for validating forms and securing backend-frontend communication with a single source of truth.

Validate unknown data with Valibot, the open source schema library with bundle size, type safety and developer experience in mind.

Valibot is the open source schema library for TypeScript with bundle size, type safety and developer experience in mind. You don't have to! Valibot is available free of charge and licensed under the MIT License . However, we rely on partners and sponsors to fund the project. If your company would like to support us, you can take a look at our sponsor page on GitHub . The core function of Valibot is to create a schema that describes a structured data set. A schema can be compared to a type definition in TypeScript. The big difference is that TypeScript types are "not executed" and are more or less a DX feature. A schema on the other hand, apart from the inferred type definition, can also be…from valibot.dev

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