Password Generator & Strength Checker guide
How to Generate Passwords and Read Local Strength Warnings
Generate passwords with browser cryptographic randomness, choose character sets and inspect local strength warnings without storing passwords or estimating crack times.
Open Password Generator & Strength Checker →Before you start
- Use a current browser with JavaScript enabled. Read the limits below before using private or large inputs.
Step-by-step instructions
- Choose a length from 8 to 128 and select at least one character set.
- Optionally exclude ambiguous characters such as I, l, 1, O, 0 and o.
- Click Generate password; each selected set is represented.
- Review length, the strength indication and pattern warnings; copy only when ready.
- To check another password, enter it in Strength checker. Clear removes both fields; no history is saved.
Interpret results and limitations
Generation uses crypto.getRandomValues with rejection sampling and requires all selected sets. No Math.random fallback is used. The checker accepts at most 512 characters and flags short length, selected common words, repetitions, sequences and date-like patterns.
Strength feedback is a conservative local heuristic, not an exhaustive dictionary, breach lookup or security certification. A long predictable password can be weak. Use unique passwords and a password manager; UUIDs and fast SHA hashes are not substitutes for password generation or secure password storage.
Example
Use this example to understand the expected behavior before working with your own input.
Prefer a long randomly generated password over a familiar word followed by a year or punctuation.Troubleshooting
Generation fails or a long password is marked weak
Select a character set and use a supported HTTPS browser. Pattern warnings can keep a long password weak; generate a fresh random password rather than extending a predictable word.
The interface does not respond
Enable JavaScript, use a supported browser and check the input limits. Reloading clears temporary input and results.
Privacy and cleanup
Inputs and results stay in the current tab. Nothing is uploaded or stored in input history. Optional analytics receives fixed tool identifiers only; entered data, file names and generated values are excluded.
Read the Privacy Policy for site preferences, optional analytics and hosting information.
Related tools and guides
Use Password Generator & Strength Checker with the steps above, or continue with a related task.
Technical references
These references explain the underlying formats or browser behavior. The steps above describe the current AnyUtils tool.