Token Generator Online Tool

Features

Fast Generation: Millisecond generation, supports batch generation up to 50 tokens
Custom Length: Supports 8-128 bits length free adjustment
Custom Character Set: Numbers, upper/lowercase letters, symbols free combination
Encryption Secure: Uses crypto.getRandomValues, secure unpredictable
One-click Copy: Supports individual copy and copy all, quick use
Cross-platform Compatible: Supports PC, tablet, mobile and other devices

Tutorial

1

Set Length

Set token length through slider or input box, supports 8-128 bits, choose appropriate length according to actual security needs.

2

Select Character Set

Check needed character set types, including numbers, lowercase letters, uppercase letters and special symbols, at least select one.

3

Generate and Copy

Set generation count, click "Generate Token" button to generate, supports individual copy and copy all.

Use Cases

API Keys

Generate API interface keys and access tokens

Verification Codes

Generate SMS verification codes, email verification codes

Invitation Codes

Generate registration invitation codes and coupon codes

Random Passwords

Generate high-strength random passwords

Session IDs

Generate session IDs, order numbers and other unique identifiers

Test Data

Generate mock data during development testing

Random Number Security Knowledge

What is Encryption Secure Random Number?

Encryption secure random number (CSPRNG) refers to cryptographically secure pseudo-random number generator, its generated random numbers are not only statistically random, but also unpredictable, even if attacker knows partial output cannot deduce subsequent or previous output. Common CSPRNG includes operating system provided /dev/urandom, CryptGenRandom, and Web standard crypto.getRandomValues API.

Why Math.random() is Not Secure?

Math.random() is JavaScript built-in pseudo-random number generator, its implementation varies by browser, usually doesn't have cryptographic security. Its seed may be based on predictable information like timestamp, attacker may deduce random number sequence through analyzing output. Therefore, Math.random() not suitable for generating passwords, keys and other security-sensitive scenarios.

This Tool: Prioritize using crypto.getRandomValues, downgrade to Math.random() when not supported

Relationship Between Token Length and Security?

Token security is closely related to length and character set size. Each additional character multiplies possible combinations by character set size. For example, 32-bit alphanumeric token has 62^32 combinations, approximately equivalent to 190-bit entropy, impossible to brute-force crack in foreseeable future. Generally recommend security token at least 16 characters, important scenarios use 32 characters or longer.

FAQ

Q: Is token generator free?

A: Completely free, no registration login needed, no usage limit, open webpage to use. All tokens generated locally in browser, not uploaded to server, protecting your privacy security.

Q: Will generated tokens be recorded?

A: Absolutely not. All tokens generated locally in your browser, not uploaded to any server, not recorded. You can use with confidence, no worry about leakage.

Q: Are generated tokens secure?

A: Very secure. This tool prioritizes using browser provided crypto.getRandomValues API to generate encryption secure random numbers, this is cryptographically secure random number generator. In old browsers not supporting this API, will downgrade using Math.random().

Q: How long should token length be?

A: Choose based on security needs: general verification codes 6-8 digits pure numbers sufficient; API keys recommend 32 characters or longer alphanumeric combination; passwords recommend 16 characters or longer including multiple character types. Longer token more secure, but also consider usage convenience.

Q: How many tokens can be generated at once?

A: This tool supports generating 1-50 tokens at once. If need more quantity, can click generate button multiple times, tool will quickly generate new token results.

Token Generator

Generated Results