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Random String & Token Generator
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This random string generator creates alphanumeric strings, API-key-style tokens, and general-purpose test tokens with a configurable length and character set. It's a quick utility for developers who need a placeholder API key generator for local development, QA engineers generating unique test identifiers, and anyone needing a random string that isn't tied to a specific format like UUID. You can choose whether to include uppercase letters, lowercase letters, digits, and symbols, and set the exact string length you need, from a short 6-character code to a long secure token. It's useful for stubbing out environment variables, generating mock database keys, or creating one-off tokens for testing authentication flows. Generation happens entirely in your browser, and nothing about the generated string is ever transmitted or logged. Set your desired length and character options below to generate a random string instantly.
Features
- Generates random alphanumeric strings of custom length
- Toggle uppercase, lowercase, digits, and symbols independently
- Bulk generation of multiple strings at once
- Useful for API keys, tokens, and test identifiers
- Instant regeneration with a single click
- Excludes ambiguous characters option for readability
- Copy-to-clipboard for immediate use
Why use this random string & token generator?
- Instant generation with no scripting or CLI needed
- Fully private - strings are generated locally in your browser
- Flexible character set controls for any format requirement
- Fast way to stub out test tokens and placeholder keys
- Free with unlimited generations
Frequently asked questions
Is this tool suitable for generating real production API keys?
It's best suited for test tokens, placeholders, and non-critical identifiers; for cryptographically secure secrets, use a dedicated secure random bytes generator.
Can I exclude ambiguous characters like 0, O, l, and 1?
Yes, there's an option to exclude visually similar characters to improve readability when a string needs to be typed manually.
What character sets can I include in the generated string?
You can independently toggle uppercase letters, lowercase letters, numeric digits, and symbol characters.
How long can the generated string be?
You can set virtually any length needed, from short 4-character codes to long 128+ character tokens.
Can I generate multiple random strings at once?
Yes, bulk generation lets you produce a batch of strings in one pass for seeding test data or generating multiple tokens.
What's the difference between this and the UUID Generator?
This tool generates arbitrary-format strings with full control over length and character set, while the UUID Generator produces standardized UUIDs following a fixed structure.
Are the generated strings guaranteed to be unique?
Each string is independently randomly generated; for very large batches, use the length and character set options to ensure sufficiently low collision probability for your use case.