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URL Decoder

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URL Decoder — Decode URL-Encoded Text Online Free

What is URL Decoder?

Decode URL-encoded strings. Convert percent-encoded text back to plain text.

URL Decoder reverses percent-encoding. Paste a URL-encoded string and get the original text. Handles %20 (space), %2B (+), and all standard percent-encoded sequences. Useful when debugging URLs, parsing query parameters, or understanding encoded data. Runs entirely in your browser.

How to Use URL Decoder

  1. Paste or type your input into the editor on the left panel.
  2. Results update automatically while you type. You can also press Ctrl+Enter to force a refresh.
  3. View the result in the output panel on the right with full syntax highlighting.
  4. Use Copy or Download to export the result.
  5. Drag and drop .json or .txt files directly into the editor.

Example

Input:

Hello%20World!%20How%20are%20you%3F

Output:

Hello World! How are you?

Common Use Cases

  • Decode query params
  • Read encoded URLs
  • Debug URL issues

Encoded vs Decoded

%20
Encoded space
%3F
Encoded ?
?
Use
In URLs
Readable text

Common Errors

  • Invalid % sequence
  • Double-encoded input
  • Malformed hex

Why Use Our URL Decoder?

  • 100% client-side — your data never leaves your browser. No server processing, no data collection.
  • No sign-up required — start using the tool instantly with no registration or installation.
  • Keyboard shortcuts — press Ctrl+Enter to run, ? for shortcuts list, Ctrl+B to toggle sidebar.
  • Persistent state — your input is automatically saved across sessions using local storage.
  • IDE-style interface — Monaco Editor (the engine behind VS Code) with syntax highlighting and error detection.
  • Multi-format conversion — convert between JSON, XML, CSV, and YAML without switching tools.

Frequently Asked Questions

What is URL decoding?

URL decoding converts percent-encoded sequences (e.g. %20) back to their original characters.

What does %20 mean?

%20 is the encoded form of a space character.

Why does decoding fail?

Invalid % sequences (e.g. %2G) or truncated input can cause errors.

Does it handle + as space?

Yes. Plus signs are decoded as spaces, per application/x-www-form-urlencoded.

Is it free?

Yes. Free, no sign-up, 100% client-side.

Try URL Decoder Now

Paste your data into the editor above for instant processing. Use Ctrl+Enter anytime to re-run quickly.

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