Dev
Fake Password Generator
Seed scripts, fixture files, and demo login screens all need passwords that look real without being real. Reusing 'password123' across every test account makes fixture data obviously fake and misses validation edge cases. This generator produces configurable random passwords — built from the browser's cryptographically secure crypto.getRandomValues API — ready to paste into whatever you're building. Four toggles control the character set: uppercase letters (A–Z), numbers (0–9), symbols (!@#$%^&*()-_=+[]{}|;:,.<>?), and lowercase (always included as the base). Mix and match to match any password policy your target system enforces. Turning off symbols produces alphanumeric-only passwords that work in connection strings, shell scripts, and legacy APIs that treat $ or ! as syntax. The length field accepts values from 8 to 64 characters. The count field generates batches up to 30, so you can populate an entire staging user table without running the generator multiple times. These passwords are intended for test fixtures, demos, and documentation — not for real account credentials. Each generated password is displayed on screen, so store any that you intend to keep in a password manager or encrypted secrets store rather than in a plaintext file.
How to use
- Choose your options above
- Click Generate
- Copy your result
Detailed instructions
- Set the count field to the number of passwords you need in one batch.
- Set the length field to match your target system's password requirements (16 is a safe default).
- Toggle the checkboxes for uppercase, numbers, and symbols to match any format restrictions.
- Click Generate to produce the full list of randomized passwords instantly.
- Copy individual passwords or the entire list and paste into your seed file, test config, or mockup.
Use Cases
- •Seeding a Postgres staging database with 50 realistic demo user credentials
- •Filling password fields in Figma prototypes or Storybook component screenshots
- •Generating alphanumeric-only credentials for legacy APIs that reject symbols like @ or !
- •Populating a Jest fixture file with varied test account passwords for auth flow tests
- •Creating plausible-looking passwords for security awareness training slide decks
Tips
- →For CSV seed files, generate 20 at once and paste the column directly — each line maps to one test user row.
- →If you need passwords that pass a specific regex validator, disable the character sets that would cause failures before generating.
- →Length 32 with all sets enabled produces output that doubles as a convincing random API secret for documentation examples.
- →Generate a fresh batch each time you share a tutorial publicly — reusing the same example passwords trains readers to treat them as real, which is a security antipattern.
- →For mobile UI mockups where field width is constrained, length 12 looks strong while staying fully visible in standard input components.
- →Pair this tool with a fake username generator to build complete test-user fixture sets without mixing in real credentials.
FAQ
how do I generate passwords without special characters for a legacy system
Uncheck the 'Include symbols' option before generating. This produces alphanumeric-only passwords that work reliably in connection strings, shell scripts, and older APIs that treat characters like $, !, or @ as special syntax. You can also uncheck uppercase independently if the system enforces lowercase-only input.
does this generator use secure randomness
Yes — it uses the browser's crypto.getRandomValues with rejection sampling to avoid modulo bias, so every character in the output is uniformly random. That said, passwords are displayed on screen and intended for test fixtures and documentation only. For real account passwords, use a dedicated password manager that generates and stores secrets securely without displaying them.
what length should I use for realistic-looking test passwords
16 characters is the sweet spot for most demos — strong enough to look credible, short enough to fit UI fields without truncating. For enterprise or security-focused mockups, bump to 20–24 characters. Drop to 8–10 and disable symbols if you need PIN-style placeholders, or go up to 32–40 with all character sets enabled to mimic an API token or secret key.
how many test passwords can I generate at once
The count field accepts values from 1 to 30. For fixture files that require more, run the generator multiple times. Each password is independently randomized, so there are no repeats within a typical batch, but large test databases should append a unique index to each credential before inserting to guarantee uniqueness under a strict constraint.
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