Generate strong, secure passwords instantly in your browser - custom length, uppercase, lowercase, numbers, and symbols. No signup required.
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Human-chosen passwords are predictable - birthdays, pet names, and common substitutions are the first things attackers try. This generator builds passwords from your chosen character sets using your browser's cryptographically secure random source (the Web Crypto API's crypto.getRandomValues()), run entirely in your browser - the password is never sent to any server or network connection, which you can confirm yourself in your browser's DevTools Network tab while generating.
Length and character-set variety are the main levers for strength: the Entropy figure shown with each result is a straightforward bits-of-randomness calculation, not a dictionary-aware strength check like the algorithms some password managers use.
Use it when setting up an account, updating credentials, or replacing a weak password - it gives you a strong password immediately without having to work out the rules yourself.
Select length and character types.
Exclude similar characters or symbols.
View strength rating and generate passwords.
Copy passwords or download as .txt.
Choose a length from 4 to 128 characters, then toggle lowercase, uppercase, numbers, symbols, or add custom characters.
Turn on Exclude Similar to drop easily-confused characters (O, 0, o, I, l, 1), or switch to Pronounceable for a consonant-vowel pattern that's easier to read and type.
Click Generate to create 1 to 50 passwords at once; each result's entropy figure and strength label update based on your current settings.
Copy an individual password, copy all of them at once, or download the full list as a .txt file.
Best For
Settings
Length 16, lowercase + uppercase + numbers enabled, symbols off, Exclude Similar on (the tool's defaults on load)Result
Character set size 56 (26 lowercase + 26 uppercase + 10 numbers, minus 6 excluded look-alike characters), Entropy 92.9 bits, Strength label "Strong"Entropy is calculated as length x log2(character set size) - a measure of theoretical randomness from length and charset variety alone. It isn't a dictionary-aware check like some password managers use, so it won't flag a password for being a real word or a predictable pattern.
Generate a long password with a mix of character types instead of reusing or slightly modifying an old one.
Switch to Pronounceable mode for a consonant-vowel pattern that's simpler to read aloud or type manually, at the cost of the full randomness of character-set mode.
Set a count up to 50 and generate them all at once, then copy or download the list.
Generate fresh, longer passwords with mixed character types to replace ones flagged in a personal security review.
Problem
Solution
Character selection uses the Web Crypto API's secure random source (crypto.getRandomValues()), so the characters are unpredictable - but a password is only as safe as where you store it and how often you reuse it. Use a different one for every account.
Problem
Solution
It's based purely on entropy (length and charset size) - it doesn't check for dictionary words, keyboard patterns, or personal information the way tools like zxcvbn do.
Problem
Solution
The .txt download is meant for quick bulk transfer (like provisioning several accounts at once) - move passwords into a password manager afterward rather than keeping a plaintext file around.
Problem
Solution
Pronounceable mode ignores the lowercase/uppercase/numbers/symbols toggles entirely - it always builds from its own fixed consonant-vowel pattern.
The Entropy figure grows with both length and charset size - a longer password with mixed character types scores higher than a short, complex-looking one.
It removes easily-confused characters (O, 0, o, I, l, 1), which helps when you'll be typing the password by hand rather than pasting it.
This tool doesn't store anything - copy or download results, then save them in a password manager rather than a plaintext note or file.
It's convenient for moving several freshly generated passwords into a provisioning script or spreadsheet once - delete the file after you've stored the passwords properly.
Character selection uses crypto.getRandomValues(), which every current browser provides. There is deliberately no weaker fallback: if the Web Crypto API is unavailable, generation fails instead of falling back to Math.random().
The Entropy figure and strength label come from a simple length x log2(charset size) formula - there's no dictionary, pattern, or personal-information check behind it.
When Pronounceable is on, the password is built entirely from a fixed consonant-vowel pattern - the lowercase/uppercase/numbers/symbols/custom settings have no effect.
This tool only generates and lets you copy or download passwords - it doesn't save, sync, or connect to any password manager or vault.
Even if a higher number is entered, the tool generates at most 50 passwords in one run.
Generated passwords aren't saved between visits - copy or download them immediately if you need to keep them.
Both generate passwords locally, but a password manager also stores and fills them.
| This Tool (Password Generator) | A Password Manager's Generator | |
|---|---|---|
| Randomness source | The Web Crypto API's secure random source (crypto.getRandomValues()), run in your browser | Typically the same Web Crypto API random source |
| Storage | None - copy or download results yourself | Saves generated passwords directly into an encrypted vault |
| Strength check | Entropy (length x log2 charset size) only | Often includes dictionary/pattern-aware strength scoring |
Which should you use?
Use this tool for a quick, private, no-account password (or a batch of them); use a password manager's generator when you want the result saved, synced, and auto-filled without manual copying.
Security-conscious users want to know exactly how these passwords are generated and whether anything is logged. Everything happens locally in your browser - the FAQ below covers the randomness source, how the strength rating is calculated, and what to do with generated passwords afterward.
Yes for the random source: every character is chosen with the Web Crypto API's crypto.getRandomValues() (with unbiased selection and a secure shuffle), not Math.random(). Each character type you tick is guaranteed to appear when the length allows it. The strength label is still a simple entropy estimate, not a dictionary-aware audit.
No. CoditTools's password generator runs entirely in your browser - nothing is sent over the network or logged. You can verify this yourself in your browser's DevTools Network tab while generating.
It's a straightforward entropy calculation - password length multiplied by log2 of your character set size - shown in bits, with a label (Very weak to Very strong) based on that number. It doesn't check for dictionary words or predictable patterns.
Only for short-term bulk transfer, like provisioning several new accounts at once. A plaintext file isn't a safe place to keep passwords long-term - move them into a password manager and delete the file afterward.
No. Pronounceable mode builds passwords from its own fixed consonant-vowel pattern regardless of which character-type toggles are on.
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