Online Tools

Clean, format, and beautify messy JSON strings with custom indentation.

Validate JSON syntax and detect precise errors with exact line and column...

Compress JSON by stripping whitespace and newlines for minimal payload size.

Generate RFC 4122 and RFC 9562 compliant UUID identifiers (v4, v7, v1, NIL)...

Validate UUID / GUID formats and inspect version, variant, and NIL properties.

Two-way UTF-8 safe Base64 encoder and decoder with live bidirectional conversion.

Encode or decode URLs, URIs, and query parameters safely.

Inspect and decode JSON Web Token (JWT) header and payload without verifying signatures.

Convert Unix epoch timestamps to human-readable dates, ISO 8601, UTC, and vice-versa.

Encode text and special characters into HTML entities or decode escaped entities.

Test, debug, and inspect regular expressions with live pattern matching.

Compute cryptographic hashes (SHA-256, SHA-512, SHA-1) using Web Crypto API.