Are the generated passwords cryptographically secure?

Yes. All passwords are generated using window.crypto.getRandomValues(), the browser's cryptographically secure pseudo-random number generator (CSPRNG). This is the same entropy source used for cryptographic keys. No passwords are ever transmitted to any server.

What is the strongest password configuration?

A password of 16 or more characters using uppercase, lowercase, numbers, and symbols is considered very strong. Length has a greater impact than complexity — a 20-character lowercase-only password is stronger than an 8-character one with all character types.

Can I generate usernames and passwords together?

Yes. Enable both Username and Password checkboxes. The tool generates paired rows following your chosen pattern (e.g. username:password or {email},{password}). You can generate up to 500 rows at once for QA fixtures, database seeding, and automation test accounts.

What pattern tokens are available for credentials?

When generating both username and password, you can use: {username} (random adjective+noun handle), {password} (secure random password), {email} (username@yourdomain.com), {uuid} (RFC 4122 v4 UUID), and {index} (row number). Example: {email},{password},{uuid}

Is any generated data stored or logged?

No. Everything runs entirely in your browser via JavaScript. GoodParse does not have a backend server for this tool. Your passwords, usernames, and credentials are never transmitted, logged, or stored anywhere.

What does 'Exclude similar characters' do?

It removes characters that look alike in many fonts: l (lowercase L), 1 (one), I (uppercase i), O (uppercase o), and 0 (zero). This prevents users from misreading a password when typing it manually.

ToolsUsername & Password Generator

Username & Password Generator

Generate bulk usernames, passwords, or paired username/password credentials. Choose what to generate, tune each setting, and produce many rows at once.

What to generate

UsernamePassword

How many rows?

Username Settings

Style

Separator

Capitalize wordsAppend random number

Output Pattern

Tokens: {username} {password} {email} {uuid} {index}

Username + PasswordEmpty

Generated output will appear here...

How to use Username & Password Generator?

1
Choose what to generate: Username, Password, or both.
2
Each selection reveals its own settings — tune username style and password rules.
3
Set how many rows to generate (bulk output, not a single value).
4
When generating both, pick a pattern like {username}:{password}, then copy or download.

Frequently Asked Questions

Can I generate usernames and passwords at the same time?

Yes. Enable both Username and Password, and the tool produces paired rows following your chosen pattern (e.g. username:password). You can generate hundreds of rows at once.

Are the passwords secure?

Yes. Passwords use crypto.getRandomValues(), the browser's cryptographically secure random generator, entirely client-side. Nothing is sent to a server.

What tokens can I use in the pattern?

When generating both, you can use {username}, {password}, {email}, {uuid}, and {index}. For example {email},{password} produces a CSV of fake login pairs.

Is any of this data stored?

No. All generation happens in your browser. We never log, store, or transmit any generated value.

Username & Password Generator

Quick Answer: Generate bulk usernames, passwords, or paired username/password credentials in one place. Pick what you need, tune the settings, and produce many rows at once — all locally in your browser.

Whether you need a batch of strong passwords, a list of memorable usernames, or paired login credentials to seed a test database, this tool covers it. Toggle Username and/or Password to reveal the relevant settings, choose how many rows you want, and get bulk output instantly.

What You Can Generate

Usernames only: Brandable handles built from adjectives and nouns with optional numbers and separators.
Passwords only: Cryptographically secure passwords with configurable length and character sets.
Both (credentials): Paired username/password (and optional email/UUID) rows following a custom pattern — ideal for QA fixtures, seeding test data, and automation accounts.

Common Patterns (Both mode)

{username}:{password} — classic colon-separated login list.
{email},{password} — CSV import for test user tables.
{"user":"{username}","pass":"{password}"} — JSON lines for API seeding.

All values are randomly generated and not linked to any real person. Use them only for testing and development.