Walnut: Webview Debug & Test

The ultimate developer tool for testing WKWebView and SFSafariViewController configurations in real-time.

KEY FEATURES

WKWebView Testing

• Real-time configuration testing with 20+ options
• Built-in DevTools: Console, Network, Storage, Performance, Sources, Accessibility
• JavaScript injection and snippet execution
• Custom User-Agent emulation
• Viewport and device emulation

SFSafariViewController Testing

• Native Safari experience with content blockers
• Reader mode and responsive size control
• Customizable bar colors and dismiss button styles

Developer Tools

• Console: Capture console.log with %c CSS styling support
• Network: Monitor fetch/XHR requests with timing data
• Storage: View/edit localStorage, sessionStorage, cookies
• Performance: Web Vitals (LCP, FID, CLS) and Navigation Timing
• Sources: DOM tree inspection, stylesheets, scripts
• Accessibility: axe-core based accessibility auditing

Additional Features

• Bookmark management for quick URL access
• Responsive viewport resizing (iPhone, iPad, Desktop presets)
• Screenshot capture
• API capability detection
• Dark mode support

Perfect for iOS developers who need to test web content rendering, debug JavaScript, analyze network requests, and ensure accessibility compliance.