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Browse the tool catalog - Security & Validation | Page 4

Validation, privacy, cryptography, and security-focused tools Page 4.

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Visualizations396

Math, Date & Finance613

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

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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

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Color Space Conversion Tools for Web and Print

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Validation

US EIN Validator

Validate United States Employer Identification Number (EIN) format used for business tax identification

Validation

US SSN Validator

Validate United States Social Security Number (SSN) format with area number verification

Validation

US ZIP Code Validator

Validate United States ZIP codes including standard 5-digit and ZIP+4 formats

Cryptography

Scrypt Generator

Generate Scrypt hash from password

Cryptography

Scrypt Validator

Validate password against Scrypt derived key

Validation

SWIFT Code Validator

Validate SWIFT/BIC bank identification codes

Validation

Strong Password Validator

Validate password strength against common security requirements (uppercase, lowercase, numbers, special chars, length)

Security

Numeric OTP Generator

Generate cryptographically secure one-time numeric codes (SMS / email verification, raffle codes, event pins) with configurable length (3-10 digits), bulk output, optional ambiguous-digit exclusion, and an optional expiry countdown. Uses crypto.randomInt, not Math.random.

Validation

OpenAPI / Swagger Validator

Validate OpenAPI 3.0/3.1 and Swagger 2.0 documents structurally: required fields, path/operation completeness, response codes, $ref resolution, operationId uniqueness, and component integrity

Security

PDF Prompt Injection Scanner

Compare safe and unsafe PDF extraction runs to detect hidden text, off-page content, tiny text, and hidden-layer prompt injection risks

Security

ReDoS (Regular Expression Denial of Service) Scanner

Scan one or more regex patterns for catastrophic backtracking risk, simulate evil inputs, and suggest safer rewrites

Security

PKCE Code Verifier & Challenge Generator

Generate, validate and verify OAuth2 / OIDC PKCE (RFC 7636) code_verifier and S256 code_challenge pairs. Three modes: (1) generate a fresh verifier + challenge from cryptographically secure random bytes at 256/384/512/768-bit entropy, (2) audit a verifier you already have against the RFC — length (43–128), charset [A-Za-z0-9-._~] and ≥256-bit entropy, and (3) verify a verifier/challenge pair by recomputing BASE64URL(SHA256(verifier)). Optionally build the full authorization-request URL and token-exchange body. Complements the generic nonce-generator (which only emits a verifier+challenge pair) with RFC-compliance auditing and pair verification.