FormSanitizer

FormSanitizer is a security and filtering layer for online forms designed to reduce spam, automated submissions, and low-quality or malicious entries. It sits between your public-facing forms and your backend or notification systems, inspecting each submission before it reaches your database or inbox. The primary purpose of FormSanitizer is to help website owners, developers, and marketers maintain clean, reliable form data without relying solely on CAPTCHAs or manual review processes.

FormSanitizer works by analyzing form submissions in real time using configurable rules, pattern detection, and reputation checks to identify spam, bots, and suspicious content. It can block or flag entries based on IP behavior, disposable or suspicious email domains, known spam keywords, and abnormal submission patterns. The tool integrates with existing forms via simple endpoint configuration, so you can continue using your preferred form builder or custom HTML forms while routing submissions through FormSanitizer. It also offers logging and analytics to help you understand spam trends, adjust your filters, and fine-tune your protection over time.