Landing Page Builder Development
Landing page builder is a tool for creating single-page marketing pages without developer. Differs from full website builder in smaller scope and focus on conversion: A/B tests, CRM integrations, lead capture forms, built-in analytics.
Landing Blocks
Typical block set:
- Hero — title + subtitle + CTA button + background image/video
- Features — advantages in grid (2/3/4 columns)
- Social Proof — customer reviews, user count, logos
- Pricing — pricing table with highlighted plan
- FAQ — collapsible answers
- Lead Form — contact capture form
- Video Section — YouTube/Vimeo embed
- Timer — countdown to event or promo end
- Footer — contacts, links, policy
Each block configurable via inspector: texts, colors, margins, images.
A/B Testing
Key advantage of dedicated landing builder. User creates variant B — changes title, button, or whole block. Traffic split 50/50. Winner determined by conversion rate.
Implementation:
- Each visit — assign cookie
variant=A|B - Conversion event (form submit) — recorded with variant binding
- Statistical significance: chi-squared test or Z-test for proportions
from scipy import stats
# Variant A: 1000 visitors, 50 conversions
# Variant B: 1000 visitors, 70 conversions
chi2, p_value = stats.chi2_contingency([[950, 50], [930, 70]])[:2]
if p_value < 0.05:
print(f"Variant B won (p={p_value:.4f})")
CRM and Email Service Integrations
Landing form should send leads to CRM or email service without code. Standard integrations:
- AmoCRM / Bitrix24 — deal/lead creation API
- HubSpot — Forms API
- Mailchimp / SendGrid — list subscription
- Webhook — universal integration
- Google Sheets — via Google Sheets API (popular with small business)
UTM Parameters and Analytics
Builder auto-passes UTM parameters from URL to CRM on form submit. Built-in analytics: views, unique visitors, conversions, click heatmap, scroll depth.
Load Speed
Landing must load fast (Core Web Vitals):
- LCP < 2.5s — images compressed, preloaded
- CLS < 0.1 — explicit block sizes
- FID/INP < 100ms — minimal JavaScript
Generation: static HTML without client framework or Next.js SSG. Images — WebP with lazy loading. Fonts — preconnect + font-display: swap.
Custom Domain and HTTPS
User connects own domain via CNAME record. SSL certificate — automatic via Let's Encrypt API.
Timeline
MVP (10–15 blocks, editor, publish, basic forms, one CRM integration): 6–10 weeks. Full builder with A/B tests, heat maps, multiple integrations, mobile editor: 3–5 months.