What is the difference between encodeURI and encodeURIComponent?

encodeURI preserves complete URI delimiters (like http:// and query ?), while encodeURIComponent encodes everything including slashes and query symbols, making it suitable for individual query parameter values.

Are my query strings or authentication tokens logged on any server?

Never! All URL encoding and decoding operations run client-side in local browser RAM with zero logging or external transmission.

USETOOLX

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URL & Query String Encoder / Decoder

100% Local · No Uploads

RFC 3986 compliant encoding with multi-byte UTF-8 character safety.

Interactive Studio

100% In-Browser RAM Execution

RAM Sandbox Active•100% Client-Side. Zero server telemetry or data retention.

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Simple Workflow

How to Use URL & Query String Encoder / Decoder in 3 Simple Steps

Paste URL or query parameter.

Toggle Encode or Decode mode.

Copy the converted string instantly.

100% Client-Side Privacy

Your data and files never leave your device. Everything processes strictly in local browser RAM memory with zero server tracking.

Zero-Lag Execution Engine

Built on client-side memory, Canvas API, and high-speed Gemini Cloud AI for instantaneous, frictionless output.

Common Questions

Frequently Asked Questions

URLs can only be sent over the Internet using standard ASCII characters. Percent encoding converts unsafe or reserved characters (such as spaces, ampersands, slashes, and question marks) into standard %xx hexadecimal representations.