Random String Generator

Random string generator for developers & testers

A random string generator helps you produce unpredictable text for API keys, session tokens, database seeds, QA data, and UI placeholders without installing extra software. This page combines a flexible alphanumeric generator, a standards-based UUID generator (version 4 random UUIDs), cryptographic random hex and Base64 byte strings, and classic Lorem Ipsum filler text — all computed locally so your secrets never leave your device.

Custom character sets & separators

Mix uppercase, lowercase, digits, optional hex-only mode, and your own symbols. Add a fixed prefix or suffix (for example a key namespace) and optionally break the body into groups with dashes or underscores every N characters, similar to how many product codes and licence keys are formatted.

UUID v4, hex, and Base64

UUID v4 values are 128 random bits with version and variant bits set per RFC 4122. Export them with dashes, without dashes, in uppercase, or wrapped in braces for Windows-style GUID literals. Hex strings encode raw random bytes as hexadecimal — common for CSRF tokens and salts. Base64 (and URL-safe Base64) packs more entropy per character for compact tokens in URLs and headers.

Privacy on BlueOrbit

Generators on this page use your browser’s secure random number API. BlueOrbit does not receive the strings you create. For production secrets, still follow your organisation’s key-management policy; this tool is ideal for development, testing, and quick one-off values.

• Five modes: custom strings, UUID v4, hex, Base64, and Lorem Ipsum
• Per-line copy and “Copy All” for multi-line outputs
• No account, no upload, no server round-trip