How to use security.txt validator
Review pasted security.txt fields, expiry and disclosure contact information. The check runs when you submit the form. Its inputs are processed in this browser.
How the check works
The validator parses field lines and checks required Contact and Expires entries, contact URI schemes, expiry syntax and HTTPS canonical links.
The Overview tab explains the findings. Measured data lets you search individual fields and values, while JSON report shows the complete export. Export JSON to retain a baseline, or print the findings for your own records. Review the report before sharing it: browser characteristics, token claims, and file names can reveal information about your setup.
Read the result in context
A current expiry and a usable contact help researchers find a disclosure route. Canonical identifies the intended document location; it does not authenticate the file by itself.
Understand the limits
No contact is opened and no remote file is fetched. OpenPGP signatures and whether a mailbox is monitored are outside the check.
Common questions
Where is the input processed?
In this browser tab. This tool does not submit its input to the site server or a third-party service.
What should I keep with a result?
Record the selected options, browser and time. Review exported values before sharing them. Generated passwords, tokens and HMAC secret keys are excluded from report exports.