If your goal is to change your login session or authentication token, EditThisCookie is the tool.
Trigger the request you want to modify (e.g., click a button or submit a form). tamper data chrome
A lightweight extension to add, modify, or remove request headers (e.g., Authorization , User-Agent , X-Forwarded-For ). Does modify POST/JSON body data. If your goal is to change your login
A: Technically, modifying your own outgoing requests isn’t illegal per se, but if you bypass payment, access unauthorized data, or violate the Computer Fraud and Abuse Act (CFAA) or similar laws, you could face serious consequences. Always stay within legal boundaries. Does modify POST/JSON body data
| Tool | Key Feature | |------|--------------| | (Community) | Full intercept, repeater, intruder. Industry standard. | | OWASP ZAP | Open-source, automated scanning + manual tampering. | | Caido | Lightweight, modern UI, fast for beginners. |