URL Encoder Decoder
Encode or decode URLs instantly. Convert special characters to percent-encoded format or decode encoded URLs back to readable text. 100% client-side. Analyze and process URLs directly in your browser with.
What is URL Encoder / Decoder | Rune
URL Encoder / Decoder converts special characters in URLs to percent-encoded format (encoding) or converts encoded URLs back to human-readable text (decoding). Supports both full URL encoding with encodeURI and component encoding with encodeURIComponent for query parameter values.
All processing happens entirely in your browser, no data is ever sent to a server. RFC 3986 compliant encoding ensures your URLs are properly formatted for web transmission. Essential for web developers, SEO specialists, and digital marketers who work with URLs and web infrastructure. Analyzes results in real time with detailed reports and actionable insights for your web properties.
Key Features of URL Encoder / Decoder
Everything you need for professional url encoder / decoder
Full URL Encoding
Encode complete URLs with encodeURI, preserving special URL characters like :, /, ?, and #.
Component Encoding
Encode individual URL components with encodeURIComponent for safe query parameter values.
Swap Input/Output
Instantly swap encoded and decoded text to chain multiple operations.
Privacy First
All encoding and decoding happens in your browser. No data is sent to any server.
Instant Results
See encoded or decoded output immediately as you type or paste text.
One-Click Copy
Copy results to clipboard with a single click for easy use in your projects.
How to Use URL Encoder / Decoder
Follow these simple steps to get started
Enter Text
Paste a URL to encode or an encoded string to decode.
Choose Mode
Select Encode or Decode, and optionally enable Component mode.
Get Results
Click to process and copy the result to clipboard.
Pro Tips
- Use Component mode (encodeURIComponent) when encoding values for query parameters.
- Full URL mode (encodeURI) preserves URL structure characters like / and ? while encoding spaces and special chars.
- Double-encoded URLs (e.g., %2520) usually mean the URL was encoded twice, decode it twice to fix.
- Spaces can be encoded as %20 (standard) or + (form data) depending on context.
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Frequently Asked Questions
Everything you need to know about URL Encoder / Decoder
What is URL encoding?
URL encoding (percent-encoding) converts special characters in URLs to a format that can be safely transmitted over the internet. Spaces become %20, ampersands become %26, and so on.
What is the difference between encodeURI and encodeURIComponent?
encodeURI() encodes a full URL while preserving special URL characters like :, /, ?, #. encodeURIComponent() encodes everything except letters, digits, and - _ . ~ making it ideal for query parameter values.
Is my data safe?
Yes. All encoding and decoding happens entirely in your browser. No data is sent to any server.
Can I encode non-ASCII characters?
Yes. Both encodeURI and encodeURIComponent handle Unicode characters by converting them to UTF-8 byte sequences and percent-encoding each byte.
Why do I need to encode URLs?
URLs can only contain certain ASCII characters. Special characters, spaces, and non-ASCII characters must be percent-encoded to be valid in a URL.
What does %20 mean?
%20 is the URL encoding for a space character. The % sign followed by two hexadecimal digits represents a single encoded character.
Is URL Encoder / Decoder free?
Yes! URL Encoder / Decoder is 100% free with no limits, no sign-up, and no ads. Use it as many times as you need.
What is double encoding and how do I fix it?
Double encoding happens when an already-encoded URL is encoded again, turning %20 into %2520. Simply decode the string twice to restore the original text.
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