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URL Encoder/Decoder

Pro Features
Batch URL processing

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About URL Encoder/Decoder

URL Encoder/Decoder converts text to and from percent-encoded URL format as defined by RFC 3986. It handles special characters, Unicode, spaces, and reserved URL characters so your query parameters, path segments, and fragment identifiers are always correctly formatted. This tool is essential for web developers building URLs, debugging query strings, or working with APIs that require encoded parameters.

Key Features

  • Encodes special characters, spaces, and Unicode into percent-encoded URL-safe format
  • Decodes percent-encoded strings back to their original human-readable text
  • Handles full URL encoding as well as component-level encoding for query parameters
  • Supports UTF-8 encoding for international characters and emoji
  • Provides both encodeURIComponent and encodeURI modes for different encoding needs
  • Real-time encoding and decoding that updates as you type

How to Use URL Encoder/Decoder

  1. 1

    Choose your mode

    Select whether you want to encode text into URL format or decode a percent-encoded string back to readable text.

  2. 2

    Paste your text or URL

    Enter the raw text you want to encode, or paste the percent-encoded URL string you need to decode.

  3. 3

    Select encoding scope

    Choose full URL encoding (preserves protocol and slashes) or component encoding (encodes everything including slashes) depending on your use case.

  4. 4

    Copy the result

    Click the copy button to grab the encoded or decoded string for use in your URL, API request, or application code.

Common Use Cases

API Query Parameter Construction

Encode user input, search terms, and filter values before appending them to API URLs to ensure special characters do not break the URL structure.

Debugging Encoded URLs

Decode percent-encoded URLs from browser address bars, server logs, or redirect chains to understand the actual parameter values being transmitted.

Deep Link Generation

Properly encode URLs embedded within other URLs for deep linking, OAuth redirect URIs, or sharing links that contain query parameters.

Internationalized URL Handling

Encode non-ASCII characters in URLs containing international names, addresses, or content in languages that use Unicode characters.

Why Use Our URL Encoder/Decoder

Encode and decode URLs in real time without opening browser DevTools or writing JavaScript one-liners. This tool offers both encodeURI and encodeURIComponent modes, which most online encoders conflate, so you get the correct encoding for your specific use case. Full UTF-8 and emoji support means international URLs and complex query strings are handled correctly every time.

URLs and Parameters Stay Private

URL encoding and decoding runs entirely in your browser without sending any data externally. Query parameters containing auth tokens, session IDs, redirect URIs, and user-specific data are never transmitted to a remote server. Safely decode URLs from production logs without leaking sensitive parameters.

Frequently Asked Questions

What is the difference between encodeURI and encodeURIComponent?
encodeURI encodes a full URL but preserves characters like ://?#&= that have structural meaning in URLs. encodeURIComponent encodes everything including those reserved characters, making it suitable for encoding individual parameter values.
How are spaces encoded?
Spaces are encoded as %20 in standard URL encoding. Some older systems use + for spaces in query strings (application/x-www-form-urlencoded), but %20 is the correct encoding per RFC 3986.
Does the tool handle emoji and special Unicode characters?
Yes. The encoder converts Unicode characters including emoji into their UTF-8 byte sequences, then percent-encodes each byte. The decoder reverses this process to restore the original characters.

Last updated: April 6, 2026