Webflow Security Best Practices
Secure your Webflow website with these essential practices. From form security to custom code safety.
Verify your app follows these best practices automatically.
Webflow handles hosting security, but you're responsible for application-level security. These practices help you build secure websites on Webflow.
Quick Wins
Security Best Practices
#1Protect Form Submissions
highForms can be targeted by bots and spammers. Enable reCAPTCHA and use Webflow's spam filtering.
Implementation
Enable reCAPTCHA in Form Settings and configure spam protection
#2Secure Custom Code
highCustom HTML/CSS/JS can introduce vulnerabilities. Review all custom code for security issues.
Implementation
Audit embed code for XSS vulnerabilities and external script security
#3Protect API Keys in Custom Code
criticalNever expose API keys in client-side custom code. Use server-side solutions for sensitive APIs.
Implementation
Use serverless functions or proxy services for API calls requiring keys
#4Enable SSL
highEnsure HTTPS is enabled and enforced for your domain.
Implementation
SSL is automatic for Webflow-hosted sites, verify custom domains have SSL
#5Use Secure Third-Party Integrations
mediumReview the security of any third-party tools, widgets, or scripts you embed.
Implementation
Audit embedded scripts, prefer official integrations
#6Implement Content Security Policy
mediumAdd CSP headers to protect against XSS and data injection attacks.
Implementation
Configure headers in Webflow project settings or via CDN
Common Mistakes to Avoid
API keys in custom code
Client-side code is visible to all visitors
Use serverless functions or proxy services for API calls
Unsecured forms
Forms without protection are targeted by bots
Enable reCAPTCHA and spam filtering
Untrusted embed scripts
Third-party scripts can access your page content
Only embed scripts from trusted sources, review what they do
Verify Your Webflow App Security
Following best practices is the first step. Verify your app is actually secure with a comprehensive security scan.
Get Starter ScanFrequently Asked Questions
Is Webflow secure?
Webflow handles hosting security (SSL, DDoS protection, etc.). You're responsible for application-level security like forms, custom code, and third-party integrations.
How do I hide API keys in Webflow?
You can't hide secrets in Webflow's client-side code. Use Webflow's integrations, Zapier, or a serverless function to make API calls that require secret keys.
Are Webflow forms secure?
Webflow forms use HTTPS and have spam filtering, but you should enable reCAPTCHA for additional protection against bots.
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Last updated: January 2026