Local privacy-first tool
Random String Generator
Create random strings for testing, fixtures, identifiers and other local development tasks.
Private by design: values stay inside the isolated tool origin and are not sent to this page, analytics, advertising, storage, or server logs.
Appropriate uses
The output is suitable for random test data and many client-side identifiers. It uses the same unbiased Web Crypto selection as the password generator. Generated strings are not stored or uploaded.
Authentication-token warning
A production session token, password-reset token, API credential or signing key needs a complete server-side design: sufficient randomness, secure transport, storage or hashing, expiry, rotation, scope, revocation and abuse controls. A random string alone is not that system.
Random strings for development and testing
Generate fixture values, non-semantic identifiers, sample codes and local test inputs. Select a pool that matches the system under test and record the intended format in the test, not only in a temporary generator setting.
Random output can reduce accidental collisions, but it does not replace a database uniqueness constraint or collision-handling logic.
Why this is not a complete token system
Authentication, password-reset and API tokens need server-side issuance, sufficient length, safe transport, hashing or protected storage, expiry, scope, one-time use where appropriate, revocation and abuse monitoring. Copying a random string into an application implements none of those controls.
Encoding and compatibility
Restrict the pool when a value will appear in a URL, filename, shell command or external protocol. The safest choice depends on that syntax. Do not remove characters after generation and assume the displayed pool estimate still applies; configure the pool before generating.