String validation

:100:Go Struct and Field validation, including Cross Field, Cross Struct, Map, Slice and Array diving

Decorator-based property validation for classes.

PHP Email address validator

✅ Painless Vue forms

A tiny but valid `init` for containers

jQuery Validation Plugin library sources

A popular .NET validation library for building strongly-typed validation rules.

validate form asynchronous

Open source rich text editor based on HTML5 and the progressive-enhancement approach. Uses a sophisticated security concept and aims to generate fully valid HTML5 markup by preventing unmaintainable tag soups and inline styles.

An express.js middleware for validator.js.

Keyhacks is a repository which shows quick ways in which API keys leaked by a bug bounty program can be checked to see if they're valid.

The most awesome validation engine ever created for PHP

orval is able to generate client with appropriate type-signatures (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification, either in yaml or json formats. 🍺

CSS Element-Queries aka Container Queries. High-speed element dimension/media queries in valid css.

Protocol Buffer Validation - replaced by https://github.com/bufbuild/protovalidate

An idiomatic Go (golang) validation package. Supports configurable and extensible validation rules (validators) using normal language constructs instead of error-prone struct tags.

Easily collect responses from ChatGPT scraper by providing a prompt along with valid Web Scraper API credentials.

Client Side Validations made easy for Ruby on Rails

Provides tools to validate values

A declarative validation library written javascript

Lightweight JavaScript form validation library inspired by CodeIgniter.

jQuery form validation plugin

Simple validation for Rust structs

A tool to calculate the contrast ratio between any two valid CSS colors.

A user-friendly HTML5 form validation jQuery plugin for Bootstrap 3

Smallest possible syntactically valid files of different types

:white_check_mark: Validator component for Vue.js

This is an Open source intelligent framework ie an osint tool which gathers valid information about a phone number, user's email address, perform VIN Osint, and reverse, perform subdomain enumeration, able to find email from a name, and so much more. Best osint tool for Termux and linux

Transform SVG to valid JSX.