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claude-skills-reference/marketing-skill/signup-flow-cro/references/signup-cro-playbook.md

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signup-flow-cro reference

Core Principles

1. Minimize Required Fields

Every field reduces conversion. For each field, ask:

  • Do we absolutely need this before they can use the product?
  • Can we collect this later through progressive profiling?
  • Can we infer this from other data?

Typical field priority:

  • Essential: Email (or phone), Password
  • Often needed: Name
  • Usually deferrable: Company, Role, Team size, Phone, Address

2. Show Value Before Asking for Commitment

  • What can you show/give before requiring signup?
  • Can they experience the product before creating an account?
  • Reverse the order: value first, signup second

3. Reduce Perceived Effort

  • Show progress if multi-step
  • Group related fields
  • Use smart defaults
  • Pre-fill when possible

4. Remove Uncertainty

  • Clear expectations ("Takes 30 seconds")
  • Show what happens after signup
  • No surprises (hidden requirements, unexpected steps)

Field-by-Field Optimization

Email Field

  • Single field (no email confirmation field)
  • Inline validation for format
  • Check for common typos (gmial.com → gmail.com)
  • Clear error messages

Password Field

  • Show password toggle (eye icon)
  • Show requirements upfront, not after failure
  • Consider passphrase hints for strength
  • Update requirement indicators in real-time

Better password UX:

  • Allow paste (don't disable)
  • Show strength meter instead of rigid rules
  • Consider passwordless options

Name Field

  • Single "Full name" field vs. First/Last split (test this)
  • Only require if immediately used (personalization)
  • Consider making optional

Social Auth Options

  • Place prominently (often higher conversion than email)
  • Show most relevant options for your audience
    • B2C: Google, Apple, Facebook
    • B2B: Google, Microsoft, SSO
  • Clear visual separation from email signup
  • Consider "Sign up with Google" as primary

Phone Number

  • Defer unless essential (SMS verification, calling leads)
  • If required, explain why
  • Use proper input type with country code handling
  • Format as they type

Company/Organization

  • Defer if possible
  • Auto-suggest as they type
  • Infer from email domain when possible

Use Case / Role Questions

  • Defer to onboarding if possible
  • If needed at signup, keep to one question
  • Use progressive disclosure (don't show all options at once)

Single-Step vs. Multi-Step

Single-Step Works When:

  • 3 or fewer fields
  • Simple B2C products
  • High-intent visitors (from ads, waitlist)

Multi-Step Works When:

  • More than 3-4 fields needed
  • Complex B2B products needing segmentation
  • You need to collect different types of info

Multi-Step Best Practices

  • Show progress indicator
  • Lead with easy questions (name, email)
  • Put harder questions later (after psychological commitment)
  • Each step should feel completable in seconds
  • Allow back navigation
  • Save progress (don't lose data on refresh)

Progressive commitment pattern:

  1. Email only (lowest barrier)
  2. Password + name
  3. Customization questions (optional)

Trust and Friction Reduction

At the Form Level

  • "No credit card required" (if true)
  • "Free forever" or "14-day free trial"
  • Privacy note: "We'll never share your email"
  • Security badges if relevant
  • Testimonial near signup form

Error Handling

  • Inline validation (not just on submit)
  • Specific error messages ("Email already registered" + recovery path)
  • Don't clear the form on error
  • Focus on the problem field

Microcopy

  • Placeholder text: Use for examples, not labels
  • Labels: Always visible (not just placeholders)
  • Help text: Only when needed, placed close to field

Mobile Signup Optimization

  • Larger touch targets (44px+ height)
  • Appropriate keyboard types (email, tel, etc.)
  • Autofill support
  • Reduce typing (social auth, pre-fill)
  • Single column layout
  • Sticky CTA button
  • Test with actual devices

Post-Submit Experience

Success State

  • Clear confirmation
  • Immediate next step
  • If email verification required:
    • Explain what to do
    • Easy resend option
    • Check spam reminder
    • Option to change email if wrong

Verification Flows

  • Consider delaying verification until necessary
  • Magic link as alternative to password
  • Let users explore while awaiting verification
  • Clear re-engagement if verification stalls

Measurement

Key Metrics

  • Form start rate (landed → started filling)
  • Form completion rate (started → submitted)
  • Field-level drop-off (which fields lose people)
  • Time to complete
  • Error rate by field
  • Mobile vs. desktop completion

What to Track

  • Each field interaction (focus, blur, error)
  • Step progression in multi-step
  • Social auth vs. email signup ratio
  • Time between steps