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URL Encoder / Decoder

Configuration
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Advanced URL Encoder & Decoder for Developers

Our URL Encoder/Decoder is engineered specifically for developers, digital marketers, and system administrators who require more than just basic string conversion. With precise control over encoding standards and data formatting, you can safely parse, debug, and format uniform resource identifiers (URIs) without data loss or unexpected escaping issues.

Key Features Built for Power Users

We built this tool from the ground up to solve common development friction points when dealing with APIs, form data, and bulk URL lists.

  • Dual Encoding Standards: Seamlessly switch between Component Mode (encodeURIComponent) and Full URL Mode (encodeURI).
  • Form Data Compatibility: Instantly toggle space encoding between standard percent-encoding (%20) and the form-urlencoded standard (+).
  • Bulk Processing (Line-by-Line): Paste a massive list of URLs or parameters and process each line completely independently, ensuring line breaks aren't encoded into a single unreadable string.
  • Performance Live Mode: By default, conversions happen instantly as you type. Working with a 50MB JSON payload? Turn off Live Mode to prevent browser lag and process manually when ready.

Component Mode vs. Full URL Mode

Choosing the correct encoding level is critical. Here is a breakdown of how our tool handles characters based on the mode you select:

Mode / Function Preserved Characters Best Used For
Component (encodeURIComponent) A-Z a-z 0-9 - _ . ! ~ * ' ( ) Query string values, individual URI parameters, JSON payloads.
Full URL (encodeURI) Component chars + ; / ? : @ & = + $ , # Validating or encoding a complete, clickable URL string.

How to Use the URL Decoder

If you're debugging a tracking link or inspecting webhook payloads, simply paste the encoded string into the input box and click "Decode". Our tool will safely parse malformed percent-encoded sequences without crashing, surfacing an error flag only if the sequence is irreparably broken (e.g., an incomplete %2).

Frequently Asked Questions

Is this URL Encoder safe for sensitive data?
Yes. All encoding and decoding operations happen locally within your browser using JavaScript. No data, API keys, or JSON payloads are ever transmitted to or stored on our servers.
Why are my spaces encoded as "+" instead of "%20"?
By default, spaces are encoded as %20. However, if you are working with application/x-www-form-urlencoded data (like traditional HTML forms), spaces should be encoded as a plus (+). You can check the "Spaces as +" option in our configuration panel to use this format.
Can I decode multiple URLs at once?
Absolutely. Turn on the "Line-by-Line" setting, paste your list of URLs, and the tool will decode each line independently while preserving your line breaks.
Why does my browser freeze with large text?
Live Mode processes text on every keystroke, which can be computationally heavy for massive strings (like Base64 images in parameters). Turn off "Live Mode" to paste large data smoothly and process it manually.
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