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URL Encoder & Decoder

Encode and decode URLs or URI components instantly in your browser.

Runs locally in your browser — no upload.

Free Online URL Encoder & Decoder

Percent-encoded strings are everywhere once you look: query parameters full of %20, tracking links mangled by escaping rules, API paths that break on a single unescaped ampersand. Whether you are building a query string, debugging analytics links or restoring a URL to something human-readable, this encoder/decoder handles both directions instantly.

Two scopes cover every use case. Component mode escapes all reserved characters — spaces, ampersands, slashes, emoji, everything — producing values that are safe to embed inside another URL, exactly what JavaScript's encodeURIComponent does for query parameters and path segments. Full URL mode preserves structural characters like ://, ? and &, so a complete link stays navigable while unsafe characters still get properly escaped. Decoding supports the same two scopes in reverse, restoring original text from percent-sequences including multi-byte UTF-8 input like Chinese, Arabic and emoji.

Conversion runs live as you type with character counts and inline validation, and everything executes locally in your browser — no requests leave your machine, so encoded content of any sensitivity stays private.

How to Use This Tool

  1. Pick a mode — Encode or Decode, then Component or Full URL scope.
  2. Enter your text — type or paste into the left panel; results appear immediately on the right.
  3. Copy — grab the result with one click, ready for your code, spreadsheet or address bar.

Benefits

  • Both directions — encode and decode with instant live feedback.
  • Two scopes — component-level safety or structure-preserving full URLs.
  • Full Unicode support — UTF-8 text, emoji and CJK characters handled correctly.
  • Inline validation — malformed percent-sequences are caught with clear errors.
  • Free and local — unlimited conversions, zero uploads.

Frequently Asked Questions

URL encoding (percent-encoding) replaces unsafe characters with a % followed by their hexadecimal byte value — for example, a space becomes %20 and an ampersand becomes %26. It guarantees that URLs and query parameters survive transport intact, since some characters have special meaning inside a URL.

Component mode (like JavaScript's encodeURIComponent) escapes every reserved character, which is what you want for individual values such as query parameters. Full URL mode preserves structural characters like ://?&= so a complete link stays navigable while spaces and non-ASCII characters still get encoded.

Whenever you receive encoded data and need to read it: query strings logged by your server, tracking parameters, API responses containing %20-style text, or links shared through systems that escaped them. Paste the string here to restore the original characters.

Yes. Text is treated as UTF-8, so Chinese, Arabic, accented letters and emoji all encode to valid percent-sequences and decode back exactly as they were.

encodeURI escapes a complete URL while leaving structural characters like ://?&= intact — that matches this tool's Full URL mode. encodeURIComponent escapes everything reserved, which is what you want for individual query values — that matches Component mode. Picking the wrong one is the most common cause of double-encoded or broken links.

Yes — free, unlimited, and fully local. Encoding and decoding happen in your browser; nothing is uploaded or stored.

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