URL Decoder

The URL Decoder converts percent-encoded strings back into human-readable plain text. When text is included in a URL, special characters and non-ASCII letters are replaced with percent-encoded sequences such as %20 for spaces, %26 for ampersands, and %E2%82%AC for the euro sign. While this encoding is necessary for URLs to work correctly, the encoded strings are difficult to read and interpret.

This tool uses the standard decodeURIComponent function to reverse the encoding process. It parses each percent-encoded sequence in your input and replaces it with the original character, correctly handling multi-byte UTF-8 sequences for Unicode text. If the input contains a malformed percent-encoded sequence that cannot be decoded, the tool returns a clear error message instead of crashing or producing garbled output.

URL decoding is a common task when analyzing web traffic logs, debugging API requests, reading query parameters from analytics platforms, or extracting readable text from encoded links shared in emails and chat applications. Marketing professionals frequently encounter encoded UTM parameters and tracking URLs that need to be decoded before the parameter values can be read. Developers use URL decoding when debugging HTTP requests, inspecting form submissions, or processing webhook payloads.

The tool handles the full Unicode range, so it correctly decodes text in any language, including CJK characters, Cyrillic, Arabic, and emoji. All processing happens entirely in your browser with no server communication, keeping your data private. Paste any percent-encoded string, get the decoded result instantly, and copy the readable text.