validatorjs/validator.js

Health v2 · maintenance only

Adoption not part of the score

23737 stars · 2495 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A JavaScript library of string validators and sanitizers for Node.js and browsers. It provides dozens of checks like isEmail, isURL, and isDate, plus sanitization helpers for cleaning user input.

Use cases

• validate email addresses in a node.js api
• sanitize user input before storing in a database
• check if a string is a valid url or ip address
• validate form fields in the browser
• validate dates, phone numbers, and credit cards
• clean and normalize strings from untrusted sources

When to choose

• you need battle-tested string validation in JavaScript or TypeScript
• you want a lightweight, dependency-free validator usable on server and client
• you need tree-shakeable imports of individual validators

When to avoid

• you need to validate non-string values like objects or arrays
• you want schema-based validation with type coercion (use zod or joi)
• you need form state management, not just validation

Facets

library · maturity stable

form-handling security developer-tools web-development backend frontend developer-tools browser string-validation sanitization input-validation email-validation form-validation nodejs javascript

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