Tool
What the Secure Token Generator does
Secure Token Generator: generates URL-safe token from Length. Example: length 32 gives URL-safe token AW6yAjxNl0jjK2ok1F879AR23Dxba4tj.
Feed it Length; it hands back URL-safe token. Set your values, then run the tool to see the result.
A secret that travels to a third-party server is no longer entirely a secret. That is usually what brings anyone replacing a weak password here.
There is no back end here. The calculation runs where you are sitting, not on a server somewhere.
Below the tool you will find the field reference, the method, and an example computed from the values it opens with.
What do the Secure Token Generator fields mean?
The Secure Token Generator uses 1 input. Because the form arrives filled, the first useful result costs you zero typing.
| Field | What to enter | Default |
|---|---|---|
| Length | accepts 8 to 256 | 32 |
How does the Secure Token Generator work?
Each output is derived from the inputs above in a single pass; there is no hidden state carried between runs, so the same inputs always give the same generated output.
If something is off you are told which field, not given a generic failure.
Worked example
These are the values the Secure Token Generator loads by default, and the result it produces from them. Open the tool above and you will find precisely these figures already in place.
| Length | 32 |
|---|
| URL-safe token | AW6yAjxNl0jjK2ok1F879AR23Dxba4tj |
|---|
A general-purpose random token
This generates a fixed-length string from a 62-character alphanumeric pool (a-z, A-Z, 0 to 9) via the CSPRNG. Suitable anywhere an unpredictable identifier is needed that does not need to look like anything in particular.
Worth knowing
- At the default 32 characters, the token carries roughly 32 × log₂(62) ≈ 190 bits of entropy, far beyond anything a realistic attack could exhaust.
- Unlike a password, a security token is never meant to be typed or memorised, so there is no reason to keep it short: extra length costs nothing and only helps.
- Typical uses: password-reset tokens, email-verification links, session identifiers. In every case the token should be single-use or short-lived, since the security model rests entirely on an attacker not being able to guess it before it expires.
- Transmit and store these over TLS only. A token intercepted in transit is exactly as useful to an attacker as one they guessed outright.
Read next: What Actually Makes a Password Strong
How to use it
- Type Length (8 to 256).
- Press Generate.
- Look at URL-safe token in the output panel.
- Use Copy Link if you want the same setup again later, or Print for a paper copy.
What this tool does not do
- Anything generated here is only as safe as wherever you store it afterwards.
- Randomness comes from your browser cryptographic source, which is suitable for real secrets.
- Edge cases at the very limits of the accepted range are handled, but rarely worth relying on.
- Nothing here can catch a correct number entered in the wrong field.
Frequently asked questions
Length, nothing else. Each field is pre-filled with a sensible default, so the quickest approach is to replace the one number you actually care about.
Length accepts 8 to 256. Anything beyond those bounds is flagged rather than approximated.
With the values loaded when the page opens, URL-safe token comes out as AW6yAjxNl0jjK2ok1F879AR23Dxba4tj. Nudge one field at a time to see which one the answer is most sensitive to.
No: there is no server involved. Close the tab and the values are gone.
Free for any use, personal or commercial.
The formula is shown above precisely so you do not have to take the accuracy on trust.