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Browse the tool catalog - Security & Validation | Page 3

Validation, privacy, cryptography, and security-focused tools Page 3.

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Visualizations396

Math, Date & Finance613

Calculators, numerics, date logic, statistics, and finance tools

Images, Audio & Video582

Image, audio, and video processing, conversion, and optimization tools

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Color, layout, graphics, visual styling, and design helper tools

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Writing, cleanup, formatting, extraction, and text analysis tools

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Developer utilities, networking, web debugging, and automation helpers

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Format, file, archive, unit, and encoding conversion tools

Audio Encoding and Format Conversion Tools

Image Format Conversion and Animated Export Tools

JSON Interchange and Format Translation Tools

Color Space Conversion Tools for Web and Print

Text Case, Encoding, and Normalization Conversion Tools

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Validation

Global Postal Code Validator

Validate postal codes from multiple countries including US ZIP, UK Postcode, Canada, and more

Validation

JSON Schema Validator

Validate JSON data against a JSON Schema to verify structure and data types

Validation

Special Character Validator

Check if a string contains special characters like !@#$%^&*()_+ and identify which ones are present

Validation

IBAN & SWIFT Validator

Validate International Bank Account Number (IBAN) and SWIFT/BIC codes with checksum verification

Validation

SemVer Validator

Validate Semantic Versioning 2.0.0 version numbers (x.y.z-alpha.1 format)

Validation

VIN Validator

Validate 17-character Vehicle Identification Number (VIN) format and checksum

Security

TOTP / HOTP Offline Code Generator

Generate RFC 6238 TOTP (time-based, 6/8 digits, 30/60s step) and RFC 4226 HOTP (counter-based) one-time passwords from a base32 shared secret, fully offline with HMAC-SHA1/256/512, plus an otpauth:// URI for importing into Google Authenticator / Authy

Security

URL Safety Checker

Detect phishing and fraud signals in a URL by deep structural analysis — punycode/IDN homograph attacks (mixed Latin/Cyrillic), embedded credentials (user:pass@host trick), high-risk TLDs, double-encoding and control-character smuggling, subdomain brand deception, and numeric/IP host obfuscation. Static analysis only, no network. Complements the URL Validator (which does basic protocol/IP checks).

Validation

VAT Validator

Validate EU VAT numbers

Validation

Tracking Number Validator

Identify and validate tracking numbers from FedEx, UPS, DHL, USPS, SF Express (顺丰) and other major carriers

Validation

UPC/EAN Barcode Validator

Validate GTIN-12 (UPC), GTIN-13 (EAN), GTIN-8, and GTIN-14 product barcodes with check digit verification

Validation

US Driver's License Validator

Validate United States driver's license numbers based on state-specific format rules (CA, NY, TX, FL, etc.)