CSRF Token Generator

About this tool

Generate secure random anti-CSRF tokens using the browser's cryptographic random source. Use a fresh token per session or form.

Example

Input: 32 bytes

Output: 64-char secure hex token

Privacy

This tool runs entirely in your browser. Your data is processed locally and never uploaded to a server.

How to use this tool

1. Open the CSRF Token Generator in your browser.
2. Choose the token length or keep the default secure setting if one is provided.
3. Click generate to create a fresh token.
4. Copy the token into your form, API response, or server-side session store.

Step by step, what happens

1. The tool asks the browser for cryptographically secure random bytes using the built-in crypto source.
2. Those random bytes are converted into a token string that is safe to place in HTML forms, headers, or JSON responses.
3. Each generate action creates a new token, so repeated clicks do not reuse the same value.
4. You then paste the token into your app and validate it on the server when the form or request comes back.

Worked example

A common use is adding a CSRF token to a contact form before sending it to your backend.

Input: contact-form-session

1. You enter a short label like contact-form-session to remind yourself what the token is for.
2. The tool ignores the label for security and generates a fresh random token from the browser's cryptographic source.
3. You copy the generated token into the form as a hidden field or into a request header.
4. Your server stores the same token for that session and checks that the submitted value matches.

Tips and common mistakes

• Generate a new token per session or per form, and do not reuse old ones.
• Store the token server-side and compare it on submission, instead of trusting a client-only value.
• Use HTTPS so the token is not exposed in transit.
• If your app uses multiple tabs or long-lived forms, make sure tokens do not expire too quickly.

Frequently asked questions