Encode, decode, and understand URL security — with character analysis, security insights, and encoding best practices
Most URL tools just encode and decode. We show you what's actually happening. Every special character has a story — why it breaks, how attackers exploit double encoding, and why your API calls fail. Watch the transformation, understand the rules, and write safer code. Built for developers who want to know why, not just how.
What's in your URL?
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What browsers actually send
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🧠 Security & Behavior Insights
✨ What makes this different?
Most URL encoders just convert characters. We analyze your input for security risks, encoding pitfalls, and explain why certain characters cause problems in URLs.