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CSRF Token Generator

One Time Form Tokens — computed locally in your browser.

Generate a CSRF token

Token
Entropy:
Store and compare like this
One token per session and per form. Compare in constant time on the server.

How to use the CSRF Token Generator

  1. Choose the token byte length and the output format.
  2. Generate the token and copy it into your form or session handler.
  3. Follow the short example to store and compare it safely.

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Frequently Asked Questions

Common questions about the free online csrf token generator.

It is an unpredictable value tied to the user session and included in every state changing request to prove the request came from your own page.
Thirty two random bytes, which is 256 bits, is far beyond what an attacker can guess, and sixteen bytes is the practical minimum.
Put it in a hidden form field or in a custom request header, and keep the matching value in the server side session.
Compare with a constant time function on the server so that the comparison time does not leak how much of the token matched.
Ordinary comparisons can return early, and tiny timing differences can in theory help an attacker guess the token byte by byte.
Yes. Rotate the token when the session privilege level changes so a token captured before login cannot be reused.
SameSite cookies help a lot, but a token is still recommended as a second layer for browsers and flows that ignore it.
A per session token is common and acceptable, while a per request token is stricter and better for sensitive actions.
For APIs you usually rely on a custom header plus origin checks, since the token only protects browser form submissions.

Last updated: October 10, 2026