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Encoding & Decoding

URL Encoder and Decoder

Percent-encode or decode text with encodeURIComponent or encodeURI. Useful for query values, non-ASCII paths, and API debugging. All processing stays in the browser.

Quick switch→Base64 Encode/Decode
URLEncodingDecoding
Quick switch:Base64 Encode/DecodeURL BuilderURL Parser

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Copy this tool URL or open the system share sheet on a supported device.

Use cases

  • Build query parameters that include non-ASCII or special characters
  • Restore percent-encoded API URL fields
  • Compare encodeURI and encodeURIComponent behavior

How to use

  1. Paste or enter the text to process
  2. Choose encode or decode and pick the encoding function
  3. Copy the output

Example input and output

Text

你好

encodeURIComponent

%E4%BD%A0%E5%A5%BD

FAQ

What is the difference between encodeURIComponent and encodeURI?

encodeURIComponent encodes more reserved characters (such as &, =, and ?), so it fits single parameter values. encodeURI keeps URL structure characters and fits encoding a full URL.

How is this different from a URL parser?

This tool percent-encodes or decodes a string. A URL parser splits a full URL into scheme, host, path, and query parts.

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