Axonix Tools
Web Utility

Free URL Encoder & Decoder Online

Safely encode or decode URLs with our professional percent-encoding utility. Ideal for web developers and API debugging.

Input
Paste your string or URL here
Result
Your processed output
Output will appear here...

Pro Tip

Encoding URLs ensures that special characters (like spaces or & symbols) are correctly interpreted by web browsers and servers. Perfect for query parameters.

Built With Care

“URL encoding follows the RFC 3986 standard, replacing reserved characters with percent-encoded equivalents. This tool uses the browser's native encodeURIComponent and decodeURIComponent functions, so results are byte-for-byte identical to what your JavaScript code produces.”

URL Encoder & Decoder

Encode a URL to percent-encoding for safe transmission, or decode an encoded URL back to readable text. Handles special characters, spaces, and Unicode — instantly and privately in your browser.

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How to Use URL Encoder & Decoder
  • 1Paste the URL or string you want to transform into the input box.
  • 2Click 'Encode' to escape special characters for safe URL transmission.
  • 3Click 'Decode' to transform an encoded string back into human-readable text.
  • 4Copy the result instantly using the copy button for your documentation or code.
  • 5Paste encoded output into a browser address bar to verify it resolves correctly.
Key Features
  • Percent Encoding: Full support for character escaping in compliance with RFC 3986.
  • Instant Bidirectional: Toggle between encoding and decoding with zero lag.
  • Error Handling: Real-time validation to catch invalid encoding sequences.
  • Unicode Support: Correctly handles emojis, accents, and multilingual characters.
  • Formatting Preserved: Maintains original line breaks and spacing for query strings.
  • Runs Locally: Everything happens in your browser — no uploads required.

URL Encoder & Decoder Specs

Limits

  • encodeURIComponent / decodeURIComponent (component encoding)
  • Bidirectional

Formats

  • Output: encoded/decoded text

Defaults

  • Empty input

How it works

  • Native encodeURIComponent / decodeURIComponent

Honest caveats

  • Does not encode whole URLs — only components. For full URL use encodeURI
  • Plus (+) vs %20 — component encoding uses %20 for spaces

Real Ways People Use This

API Query Strings

Encode query parameters with special characters to prevent broken URLs in API requests.

Web Development

Decode percent-encoded URLs to inspect and debug redirect links and form submissions.

SEO & Analytics

Encode UTM parameters and tracking URLs to ensure proper attribution in marketing campaigns.

International Text & Emojis

Encode non-ASCII characters, emojis, and multilingual text so they survive URL transmission intact.

Important Notes
  • Encoding rules differ by URL component (path vs query), so context matters.
  • Double-encoding can break APIs and redirect links if encoded input is transformed again.
  • Invalid percent sequences should be corrected before passing values to production endpoints.
Quick Checklist
  • 1Confirm whether input should be encoded or decoded for your specific workflow.
  • 2Run conversion once and inspect special characters (`?`, `&`, `=`, spaces).
  • 3Test final string in the target app/request to verify behavior.

Questions That Usually Come Up

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