Describe the field
Name and type (text, email, number, URL, date) determine the base validation rules that apply.
VALIDATION REQUIREMENTS
Input Validation Checklist Generator
Generate validation requirements for type, length, format, range, encoding, and malicious input from a single field description.
- Uses your inputs in a transparent calculation
- Instant result with practical next steps
- No signup required
Planning guidance only. Validate important decisions with customer evidence and your delivery team.
YOUR INPUTS
Build your result
Complete every field. The result updates only when you choose Calculate.
How it works
Flag if it's user-facing
Fields shown back to other users need explicit XSS and injection protection, not just format checks.
Get a concrete checklist
Type, length/range, encoding, and malicious-input requirements tailored to this specific field.
Continue learning: Input validation basics for MVPs
Frequently asked questions
Why does 'user-facing' change the checklist?
A field only you see (like an internal note) still needs type and injection validation at the data layer, but a field rendered to other users additionally needs output escaping to prevent XSS.
Is client-side validation enough?
No — client-side validation is a UX convenience that can always be bypassed. Every requirement in this checklist should also be enforced server-side.
Does this replace a security review?
No — it's a starting checklist for one field. A full security review should cover the whole request/response path, not just individual field validation.
How is the checklist generated?
A deterministic rule set adds requirements based on field type (format/range specifics) and user-facing status (XSS/injection specifics), plus universal encoding and server-side enforcement requirements.
How We Compare
| Feature | MVPHub | OWASP Cheat Sheets | Snyk |
|---|---|---|---|
| Instant field-specific checklist | Included | Limited | Not included |
| No account required | Included | Included | Not included |
| Tailored to user-facing vs private fields | Included | Not included | Not included |
| Free, no signup required | Included | Not included | Not included |
OWASP Cheat Sheets are a comprehensive reference; Snyk scans running code and dependencies for known vulnerabilities. This tool sits between them — a fast, field-specific starting checklist you can apply immediately.
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