URL Encoder/Decoder
Encode special characters and query parameters into safe percent-encoded URLs, or decode encoded URLs instantly.
The Safety Net of Navigation
The web is a vast network of symbols, but some characters cannot travel freely. URL encoding secures your data, wrapping it in a percent-encoded shell that prevents browser confusion.
From query parameters to complex path fragments, we ensure your URI remains structurally sound and universally readable across all platforms.
URL encoding (percent-encoding) converts special characters into a format that can be safely transmitted in URLs. Characters like spaces, ampersands, and non-ASCII characters are replaced with percent-encoded equivalents (e.g., space becomes %20). This is essential for building query strings, API parameters, and handling international characters in URLs.
Process your URLs and parameters locally without any server transmission — safe for encoding sensitive query parameters and API endpoints.
According to RFC 3986, URIs may only contain a strict subset of US-ASCII characters. Reserved delimiters (such as ?, &, =, and /) and non-ASCII UTF-8 bytes (such as Korean, Japanese, or emojis) must be converted into %HH hexadecimal byte triplets so web servers, API gateways, and browsers parse query strings without corruption.
Mastering the URI
- Enter the URL or text fragment requiring safety.
- The engine replaces unsafe characters with hex codes.
- Verify the structure with real-time decoding.
- Safely integrate the result into your application.
Compatibility Tip
Always encode query parameters containing special characters like '&' or '=' to avoid breaking the logic of your backend requests.
❓ Frequently Asked Questions
Alphanumeric characters and a few symbols like '-', '.', '_', and '~' are unreserved and safe for URLs.
It's the mechanism of replacing a character with a '%' followed by its two-digit hexadecimal representation.
How Base64 Encoding Works: Radix-64 Bit Splitting and Payload Mathematics →
Understand 8-bit to 6-bit binary radix conversion, padding rules, URL-safe alphabets, and network encoding trade-offs.