URL Encoder & Decoder
Encode plain text into URL-safe percent format or decode URL-encoded strings back to readable links. All processing happens locally on your device.
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URI Percent-Encoding Standards
DuckConvert implements standard RFC 3986 compliance. Unsafe, non-ASCII, and reserved characters are safely mapped to their hex byte-triplets using modern Unicode UTF-8 character specifications.
Unlike old legacy systems that convert spaces to plus symbols (+), our tool supports standard percent-encoding (%20) alongside standard decode routines, making it highly compatible with REST API architectures.
Confidentiality and Safe Environment
- Secure Sandbox Memory: Bypasses remote server databases. Data is parsed strictly in-memory using native JS string decoders.
- Sub-millisecond Performance: Live translating maps strings in real-time without server processing lag or networking delays.
- Wide Compatibility: Works perfectly on all major web browser platforms, ensuring a uniform developer utility experience.
URL Encoder & Decoder Frequently Asked Questions
URL encoding, also known as percent-encoding, is a mechanism used to translate characters in a Uniform Resource Identifier (URI) under specific conditions. Characters that do not fall inside the standard unreserved character set must be represented as a percent sign (%) followed by a two-digit hexadecimal representation corresponding to the character's ASCII/Unicode byte value.
URLs can only be sent across the internet using the standard US-ASCII character set. Certain characters have specific structural meanings within URLs (such as '?' for query parameters, '&' for separators, and '/' for paths). If you need to pass raw text, search phrases, or key-value structures containing these special characters inside a URL query string, you must encode them so that routers and web servers do not misinterpret the URL's layout.
Unreserved safe characters (which are never encoded) include letters (A-Z, a-z), digits (0-9), and basic punctuation (hyphen '-', underscore '_', period '.', tilde '~'). Reserved characters that must be encoded if they represent raw data instead of URL syntax include space (encoded as '%20' or '+'), question mark '%3F', ampersand '%26', equals '%3D', forward-slash '%2F', and octothorpe '%23'.
Many developers use public URL tools to decode URLs containing proprietary corporate endpoints, confidential emails, internal database keys, or API tokens. Sending these URLs to external online encoders logs your configurations in their cloud servers, posing a heavy privacy risk. DuckConvert runs purely on the client side inside your browser memory, keeping your links completely confidential.