URL Encoder & Decoder
Encode and decode URLs with real-time conversion, examples, and swap mode—perfect for handling special characters in query strings.
Our URL Encoder & Decoder converts special characters to percent-encoded format (%20, %40) for safe URL transmission. Features real-time conversion, mode swap, quick examples, and copy—essential for developers handling query strings, API parameters, and form data.
Frequently Asked Questions
What is URL encoding and why is it needed?
URL encoding (percent-encoding) converts special characters into a format safe for URLs using % followed by hexadecimal values. It's required because URLs can only contain ASCII characters. For example, spaces become %20, @ becomes %40, and emojis are converted to multi-byte sequences.
What's the difference between encodeURI and encodeURIComponent?
encodeURIComponent (used by this tool) encodes all special characters including :, /, ?, &, =, making it perfect for query parameters. encodeURI preserves URL structure characters, suitable for full URLs. Use encodeURIComponent for individual parameter values.
How do I decode a URL?
Switch to Decode mode, paste your encoded URL (with %20, %40, etc.), and the tool automatically converts it back to readable text. Invalid encoded strings will show an error message.
Can I encode special characters and emojis?
Yes! The tool handles all Unicode characters including emojis, Chinese characters, and symbols. Each character is converted to its UTF-8 percent-encoded representation (e.g., 🚀 becomes %F0%9F%9A%80).
What is the swap feature?
The swap button switches modes and moves the output to input, allowing you to quickly encode then decode (or vice versa) to verify the conversion is reversible and correct.
When should I use URL encoding?
Use URL encoding when passing data in query strings, form submissions, API requests, or any time you need to include special characters in URLs. It's essential for proper HTTP communication and prevents broken links.