If you still have an old Firefox version (pre-57) for a lab environment, you can run HackBar v2.9, but for real work, use Burp or ZAP.
: Unlike heavy suites like Burp Suite, HackBar lives directly in the browser's developer tools (F12), making it ideal for quick, "on-the-go" security audits within a single window. Key Features of the Legacy .xpi Versions
For encoding/decoding: Use the tab with JavaScript:
Because this is an .xpi file rather than a store-hosted extension, the installation requires a few manual steps:
