Static Forms - Secure form backend and form endpoint for contact forms

Spam Protection

Keep unwanted submissions out of your inbox

Overview

Static Forms supports two types of spam protection:

reCAPTCHA

Google's popular CAPTCHA service. Free and widely trusted.

  • ✅ Industry standard
  • ✅ Multiple versions (v2, v3)
  • ⚠️ Requires Google account

ALTCHA

NEW

Privacy-first CAPTCHA alternative. No tracking or external dependencies.

  • ✅ Privacy-focused
  • ✅ No external accounts needed
  • ✅ Better user experience

ALTCHA Setup

Recommended

ALTCHA is a privacy-first, self-hosted CAPTCHA alternative that doesn't require any external accounts or API keys.

Step 1: Enable ALTCHA in Dashboard

  1. Go to your CAPTCHA settings
  2. Enable ALTCHA protection
  3. Save your settings

Step 2: Add ALTCHA to Your Form

HTML

💡 Learn More: Check out our detailed guides on implementing ALTCHA:

reCAPTCHA Setup

Google reCAPTCHA is a widely-used CAPTCHA service that protects your forms from automated spam. Static Forms supports both reCAPTCHA v2 (checkbox) and v3 (invisible - Pro only).

Pro Feature: reCAPTCHA v3 is available exclusively for Pro users. It provides invisible protection with score-based verification, eliminating the need for user interaction.

Step 1: Get reCAPTCHA Keys

  1. Visit Google reCAPTCHA Admin
  2. Register your site and get your Site Key (for HTML) and Secret Key (for Static Forms)
  3. Important: Make sure to add your domain to the domain list in the reCAPTCHA admin console
  4. Choose your version:
    • v2 Checkbox: User clicks "I'm not a robot" (All tiers)
    • v3 Invisible: Score-based verification, no user interaction (Pro only)

Step 2: Configure in Dashboard

  1. Go to your CAPTCHA settings
  2. Select the reCAPTCHA tab
  3. Choose your version (v2 or v3 for Pro)
  4. Enter your Secret Key (not the Site Key)
  5. Save your settings

Step 3: Add reCAPTCHA to Your Form

For reCAPTCHA v2 (Checkbox):

HTML

For reCAPTCHA v3 (Invisible - Pro Only):

HTML
Read the complete reCAPTCHA guide →

Which Should You Choose?

FeatureALTCHAreCAPTCHA
Setup DifficultyEasyModerate
External Account RequiredNoYes (Google)
PrivacyExcellentGood
User ExperienceSmoothCan be intrusive
EffectivenessExcellentExcellent

🎯 Recommendation: We recommend ALTCHA for most use cases due to its ease of setup, privacy benefits, and excellent user experience.

Documentation