CODINGVILA COLLECTION

Security tools

Generate secure values, calculate digests, and inspect security configuration.

28 focused tools

EXPLORE BY PURPOSE

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7 toolsPasswords & secure random

Generate passwords and random values with browser cryptography.

4 toolsHashing & checksums

Calculate browser-native digests for integrity checks.

1 toolJWT & token inspection

Inspect token structure locally without overstating verification.

4 toolsWeb cryptography

Derive keys and calculate HMAC values with Web Crypto.

3 toolsCertificates & keys

Inspect PEM blocks and public key fingerprints safely.

6 toolsSecurity headers & policies

Build defensive browser policy headers and secure cookie settings.

3 toolsSensitive-data analysis

Detect, redact, and assess secrets and sensitive text locally.

ALL UTILITIES

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Strong Password Generatorgenerate a strong password with cryptographically secure randomness.

Random String Generatorcreate secure random identifiers from a selected alphabet.

SHA-256 Hash Generatorcalculate a SHA-256 digest for UTF-8 text.

JWT Inspectordecode JWT header and payload claims locally without claiming signature verification.

Multi-Hash File & Text Generatorcalculate SHA-1, SHA-256, SHA-384, and SHA-512 digests for pasted text or a local file.

Hash Comparison Toolcompare two digest strings using a timing-resistant-style full scan.

HMAC Generatorcalculate an HMAC with SHA-256, SHA-384, or SHA-512 using Web Crypto.

Password Strength Checkerestimate length, character variety, entropy, and common-pattern risks locally.

Passphrase Generatorgenerate a secure multi-word passphrase from a local word list.

Secure PIN Generatorgenerate cryptographically random numeric PIN values.

Secure Token Generatorgenerate a URL-safe token from cryptographically random bytes.

Password Entropy Calculatorestimate theoretical password entropy from length and observed character sets.

PBKDF2 Calculatorderive a hexadecimal key with PBKDF2 and Web Crypto.

HKDF Calculatorderive a hexadecimal key from input keying material using HKDF-SHA-256.

Random Bytes Generatorgenerate cryptographically random bytes as hexadecimal and Base64URL.

Secure Random Number Generatorgenerate an unbiased cryptographically random integer within an inclusive range.

PEM Decoder and Formatterdecode PEM armor, report block labels, and normalize line wrapping.

SSH Public Key Parserparse an OpenSSH public-key line and report type, payload length, and comment.

SSH Key Fingerprint Generatorcalculate an SHA-256 fingerprint for an OpenSSH public-key payload.

Permissions-Policy Generatorgenerate a restrictive Permissions-Policy header for common browser capabilities.

Security Headers Generatorgenerate a coherent baseline of modern browser security response headers.

Referrer-Policy Generatorselect and describe a standard Referrer-Policy header value.

HSTS Header Generatorgenerate a Strict-Transport-Security header with bounded max-age.

Cookie Security Checkerinspect a Set-Cookie value for Secure, HttpOnly, SameSite, and prefix guidance.

SameSite Cookie Generatorbuild a secure Set-Cookie value with explicit SameSite behavior.

Secret and Token Detectordetect common API key, bearer token, JWT, and private-key patterns in text.

Sensitive Data Redactorredact email addresses, IP addresses, bearer tokens, JWTs, and likely API keys.

Entropy and Randomness Analyzermeasure Shannon entropy, symbol diversity, and repeated-pattern indicators.

Private security tools for everyday work

Generate secure values, calculate digests, and inspect security configuration. Each page explains supported input and produces a real result without a server queue.

Why browser-based processing matters

Local processing reduces delay and avoids sending working data to a conversion service. Your browser and device still set practical memory limits, so review large results before production use.