Tools

Fast, privacy-focused tools that run entirely in your browser. No data leaves your device.

Generators

UUID Generator

Generate version 4 UUIDs using native crypto API. Perfect for database keys, session IDs, and unique identifiers.

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Hash Generator

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text. Fast client-side hashing.

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Formatters

JSON Formatter

Format, validate, and beautify JSON data with syntax highlighting. Minify or prettify JSON instantly.

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Encoders

Base64 Encoder/Decoder

Encode and decode Base64 strings. Supports text and handles UTF-8 encoding properly.

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Utilities

Text Diff Checker

Compare two texts side-by-side and see differences highlighted. Perfect for code review and document comparison.

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JWT Decoder

Decode and inspect JSON Web Tokens. View header, payload, signature, and check token expiration.

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HTML Viewer

Preview HTML instantly in a sandboxed iframe. Paste any HTML and see it rendered live with full JavaScript support in an isolated context.

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Converters

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and ISO 8601 format, or convert ISO 8601 dates back to timestamps.

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Crypto

AES Encrypt/Decrypt

Encrypt and decrypt text using AES-GCM with password-based key derivation (PBKDF2). Secure client-side encryption.

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HMAC Generator

Generate HMAC signatures for message authentication. Supports SHA-256, SHA-384, and SHA-512 with hex and Base64 output.

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Salt & IV Generator

Generate cryptographically secure random bytes for salts, IVs, nonces, and keys. Multiple output formats.

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