Data Validators
Validate data formats, contacts, and input fields
7 tools available
Available Tools
JSON Schema Validator
Validate JSON payloads against JSON Schema drafts using Ajv with configurable strictness, coercion, and error reporting — all offline in your browser.
Email Address Validator
Validate email addresses with comprehensive syntax checking, domain analysis, and deliverability insights.
Phone Number Validator
Validate phone numbers from around the world with country detection, format verification, carrier analysis, and multiple output formats.
Credit Card Validator
Validate credit card numbers using industry-standard algorithms, detect card brands, verify expiry dates, and check BIN information.
IBAN Validator
Validate International Bank Account Numbers (IBAN) using mod-97 algorithm, check country codes, lengths, and provide bank information.
URL Validator
Validate URLs and web links with comprehensive security analysis, domain verification, SEO recommendations, and accessibility checks.
HTML5 Validator
Validate HTML5 markup for unclosed tags, structural issues, and malformed attributes with optional prettified output and Markdown reports.
Why Use Our Data Validators?
Free Forever
No registration, no limits, no hidden costs. Use all tools for free.
Lightning Fast
Instant processing with optimized algorithms and modern web tech.