Analysis

General, Accessibility, Network and Security, Performance, SEO and SEM, Validation, …

Favorite: HTML Validator (W3C)

Misc

Browser Testing, Code Generation, Code Optimization, Conversion, Graphics and Design, Network and Security, SEO and SEM, …

Favorite: Color Scheme Generator (Coolors)

New Tools

• IP History Check
• HTML Optimizer
• Security Leak Victim Check (Hasso Plattner Institute)

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Site Check

Easily test your site in many different tools. Comes with the Site Check Bookmarklet.