URL Encoder/Decoder

Encode and decode URLs, query strings, and parameters with advanced options for debugging and analysis.

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About URL Encoding

Encode/decode URLs

URI Encoding
Component Encoding
Bulk Processing

The URL Encoder/Decoder tool is a powerful, developer-friendly utility designed to accurately convert URLs, query parameters, and text strings between encoded and decoded formats using modern web-safe standards. It supports multiple encoding modes including URI, URL component, form encoding, and RFC3986 strict compliance, ensuring compatibility with browsers, APIs, and server-side applications. With advanced features like auto-detection, skip-encoded protection, encode-all mode, space handling options (+, %20, preserve), batch processing, and intelligent error recovery, this tool makes it easy to sanitize, debug, or prepare URLs for web development, SEO, data processing, and API integrations. Whether you're fixing malformed URLs, encoding parameters for secure transmission, or analyzing full query strings, this tool delivers precision, clarity, and developer-grade reliability.

Primary Use Cases

  • Encode URLs before sending them through APIs, webhooks, or third-party integrations to prevent parsing errors.
  • Decode complex query strings from marketing trackers, analytics tools, and redirect URLs for cleaner analysis.
  • Clean and normalize malformed URLs copied from emails, old databases, or broken web pages.
  • Prepare URL parameters for OAuth, payment gateways, and authentication flows that require strict encoding.
  • Convert form submissions where spaces need to be encoded as plus signs for compatibility with legacy systems.
  • Batch-encode multiple URLs at once when working with bulk spreadsheets or CSV imports.
  • Fix double-encoded or partially encoded URLs using the skip-encoded feature to avoid corrupt output.
  • Decode long tracking URLs from ad platforms to view clean, human-readable parameter values.

How to Use

  1. 1.Enter any URL, encoded string, or text into the input box to automatically process it based on your selected mode.
  2. 2.Choose between Encode or Decode mode depending on whether you want to convert text into a safe URL format or make an encoded URL readable.
  3. 3.Select URI or Component encoding to control how strictly characters like ?, &, and = are handled during processing.
  4. 4.Turn on 'Use + for spaces' if you need form-style encoding for legacy systems or PHP-based servers.
  5. 5.Enable RFC3986 strict mode when APIs or authentication systems require characters like ! ' ( ) * to be percent-encoded.
  6. 6.Switch on skip-encoded mode to avoid double-encoding URLs that already contain %XX sequences.
  7. 7.Use encode-all mode to convert every character—including emojis and Unicode—into percent-encoded UTF-8 bytes.
  8. 8.Paste multiple URLs or lines of text to use the batch encoder, which processes each line independently.
  9. 9.Click Copy to save the output to your clipboard or Download to export it as a text file.
  10. 10.Use the Reset button to clear all fields and restore default options for fresh input.

FAQs

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