URL Encoder/Decoder

Type:
Plain Text0 chars
Encoded Output0 chars
Output will appear here...

What This Tool Does

URL Encoder/Decoder is built for deterministic developer and agent workflows.

Encode and decode URL components and full URLs.

Use How to Use for execution steps and FAQ for constraints, policies, and edge cases.

Last updated:

This tool is provided as-is for convenience. Output should be verified before use in any production or critical context.

Agent Invocation

Best Path For Builders

Browser workflow

Runs instantly in the browser with private local processing and copy/export-ready output.

Browser Workflow

This tool is optimized for instant in-browser execution with local data handling. Run it here and copy/export the output directly.

/url-encoder/

For automation planning, fetch the canonical contract at /api/tool/url-encoder.json.

How to Use URL Encoder/Decoder

  1. 1

    Choose encode/decode mode

    Select between encoding a URL or URL component (query params, fragments) and decoding from an encoded string.

  2. 2

    Paste your URL or component

    Input a full URL (https://example.com?key=value&foo=bar) or a parameter value to be encoded.

  3. 3

    Encode instantly

    Click 'Encode' and see special characters (spaces, &, =, #) converted to %XX format. Preserves scheme and domain by default.

  4. 4

    Test in context

    Build query strings in the preview pane and test parameter combinations before copying to your application.

  5. 5

    Copy or share

    One-click copy to clipboard. The tool also shows a 'Test Link' button to open the encoded URL in a browser.

Frequently Asked Questions

What is URL Encoder/Decoder?
URL Encoder/Decoder converts special characters in URLs to their percent-encoded equivalents and back. It handles both full URLs and individual URL components like query parameters.
How do I use URL Encoder/Decoder?
Paste a URL or text string into the input field and click Encode or Decode. The tool converts special characters to percent-encoded format (e.g., spaces become %20) or decodes them back to readable text.
Is URL Encoder/Decoder free?
Yes. This tool is free to use with immediate access—no account required.
Does URL Encoder/Decoder store or send my data?
No. All processing happens entirely in your browser. Your URLs stay on your device — nothing is sent to any server.
When do I need to URL-encode strings?
URL encoding is required when passing special characters in query parameters, form data, or URL paths. Characters like spaces, ampersands, and non-ASCII characters must be percent-encoded to be valid in URLs.