What is URL Encoder & Decoder?
The URL Encoder & Decoder converts special, reserved, or non-ASCII characters in a URL string into their safe percent-encoded format, and decodes percent-encoded URLs back into human-readable text. Browsers transmit URLs using a restricted set of ASCII characters; query parameters containing spaces, ampersands, or hashes must be encoded to prevent routing errors. This utility runs completely in-browser for speed and privacy.
How to Use URL Encoder & Decoder
- Select 'Encode' or 'Decode' depending on your current task.
- Paste your raw URL or percent-encoded query string into the input area.
- The processed output will immediately display in the result card.
- Click 'Copy' to copy the encoded or decoded string to your clipboard.
Common Use Cases
- Web developers constructing API request URLs with query parameters containing spaces, ampersands, or hashes.
- SEO professionals analyzing UTN referral campaigns or decoding redirect URLs to inspect original query parameters.
- Security researchers decoding obfuscated URLs in suspicious email headers or web requests.
Pro Tips & Best Practices
- URL encoding replaces spaces with `%20` or `+`. If you are encoding query parameters specifically, `+` is standard, while path segments require `%20`.
- Never URL-encode an entire URL including the protocol (`https://`) and domain unless you are passing it as a query parameter to another redirect service.