URL Encoder / Decoder

Why Use This Tool?

URL Encoder / Decoder converts text and special characters into percent-encoded ASCII strings (`%20` for space, `%2F` for `/`, `%3F` for `?`) for safe query parameter transmission according to RFC 3986.

Getting Started with the URL Encoder / Decoder

1. Type or paste your URL or query string into the box.
2. Select mode: `encodeURIComponent` (for query parameter values) or `encodeURI` (for full URLs).
3. Click 'Encode' or 'Decode' to process.
4. Copy the encoded URL string.

Pro Tips & Best Practices

• `encodeURIComponent` vs `encodeURI`: Use `encodeURIComponent` when encoding parameter values (encodes `&`, `=`, `?`); use `encodeURI` on full URLs to preserve protocol slashes.
• Fix Broken Query Strings: Prevents spaces, ampersands, and special characters from breaking API URLs.
• Decode Obfuscated URLs: Easily decode messy `%20%3F%26` strings back into human-readable text.

Related Guides & Tutorials

• Json Formatting For Developers — Learn in-depth concepts, best practices, and expert tips.
• Base64 Encoding Explained — Learn in-depth concepts, best practices, and expert tips.

Frequently Asked Questions

What's the difference between encodeURI and encodeURIComponent?

encodeURI encodes a full URL while preserving characters like / and : that are structurally meaningful in a URL, while encodeURIComponent encodes a single component more aggressively, escaping those same characters too — use the component version for individual query parameter values.

Why do spaces need to be encoded in a URL?

URLs can't contain literal spaces, since they're used as a delimiter in many contexts — a space is typically encoded as %20 or a plus sign, depending on the specific encoding context.

What does percent-encoding actually mean?

It represents a reserved or special character as a percent sign followed by its hexadecimal code, like %20 for a space — this lets URLs safely include characters that would otherwise have a conflicting special meaning.

Is my URL data uploaded anywhere?

No — encoding and decoding happen entirely in your browser using standard JavaScript functions, so nothing is sent to a server.

Cite This Tool

Referencing this tool in a paper, article, or bibliography? Copy a ready-made citation below.

NexLove.org. (2026). URL Encoder / Decoder [Software]. https://nexlove.org/tools/url-encoder.html

“URL Encoder / Decoder.” NexLove.org, 2026, nexlove.org/tools/url-encoder.html.

NexLove.org (2026) URL Encoder / Decoder. Available at: https://nexlove.org/tools/url-encoder.html (Accessed: 2026).

@misc{nexlove_url_encoder,
  title = {URL Encoder / Decoder},
  author = {{NexLove.org}},
  year = {2026},
  url = {https://nexlove.org/tools/url-encoder.html}
}

Embed This Tool

Add the live URL Encoder / Decoder tool to your own website with this snippet — it loads the real, working tool in an iframe, not a static screenshot.

<iframe src="https://nexlove.org/embed/url-encoder.html" width="100%" height="600" style="border:1px solid #e2e8f0;border-radius:12px" title="URL Encoder / Decoder — NexLove.org" loading="lazy"></iframe>