URL Encoder & Decoder (Percent-Encoding)

100% In-Browser & Private

Encode special characters in URLs and query strings using percent-encoding (RFC 3986), or decode encoded URIs into human-readable text.

About URL Encoder & Decoder

Uniform Resource Identifiers (URIs) can only contain a limited set of ASCII characters. Characters outside this set, or characters with special syntactic meanings (like ?, &, =, /, and spaces), must be percent-encoded (e.g. space becomes %20). This online tool handles URL encoding and decoding accurately in your browser.

Key Features & Capabilities

RFC 3986 compliant encodeURIComponent and decodeURIComponent parsing
Bidirectional live conversion: encode or decode simultaneously
Supports complex query parameters, deep links, and international characters
Zero server round-trips for maximum performance and security

How to Use This Tool

  1. 1

    Enter URL or string

    Paste a standard URL, query string, or plain text into the Input area.

  2. 2

    Instant encoding

    Watch the percent-encoded URL generate instantly.

  3. 3

    Decoding

    Paste an encoded URL into the Output area to inspect its decoded representation.

Frequently Asked Questions

What is percent-encoding?

Percent-encoding represents non-ASCII or reserved characters in a URI as a "%" followed by two hexadecimal digits representing the character's byte value.

Is this safe for sensitive tokens in query strings?

Yes, 100%. All conversions execute purely in your browser runtime; no URLs, tokens, or queries are logged or sent to any server.

Client-Side Security Guarantee: All operations are processed locally in your browser sandbox using web standards. We never record, send, or store your code, data payloads, or tokens on any server.