Use component mode for query values. Use URL mode to keep reserved URL separators readable.
Ready to encode or decode
Paste input, choose a mode, then click Convert// encode and decode URLs safely
Encode and decode URLs, query strings, and components safely with Unicode support, plus copy, sample, download, and quick validation tools in your browser.
Use component mode for query values. Use URL mode to keep reserved URL separators readable.
Ready to encode or decode
Paste input, choose a mode, then click ConvertAdd a full URL, query string, path segment, or raw value into the input box.
Choose component encoding, full URL encoding, or decoding based on your task.
Review warnings, copy the converted result, or download it as a text file.
URL Encode Decode converts readable URL text into percent-encoded form and turns encoded strings back into readable text. It runs in your browser for fast, private debugging.
URL encoding replaces characters that are unsafe or ambiguous in URLs with percent-encoded byte sequences.
Encode a component when handling one query value or path segment. Encode a full URL only when you want to preserve separators such as : / ? & and =.
Yes. The browser JavaScript uses UTF-8 aware encoding and decoding for non-ASCII text, emoji, and multilingual strings.
%20 is standard percent encoding for a space. The plus sign is commonly used for spaces in form-style query strings.
No. The main conversion runs locally in your browser. The small PHP API fallback is included only for server-side integration patterns.
Yes. With strict decoding enabled, the tool warns about malformed percent escape sequences before decoding.
A URL Encode Decode tool helps developers, marketers, analysts, and content teams convert URL text between readable form and percent-encoded form. URLs are not simply free-form text. They use reserved characters such as question marks, ampersands, equals signs, slashes, hashes, colons, and percent signs to describe structure. When you place arbitrary text inside a URL, especially inside a query parameter value, that text may contain characters that conflict with the URL structure. Encoding turns those characters into safe byte sequences so the link can be transmitted, copied, logged, and parsed correctly.
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This tool is designed for quick browser-based work. Paste a string, choose whether you want to encode a single component, encode a full URL, or decode an existing encoded string, then copy the result. It is useful for API testing, redirect debugging, analytics links, OAuth callback URLs, search URLs, and any task where a small encoding mistake can break a request.
URL encoding matters because many characters have special meanings in web addresses. An ampersand separates query parameters. An equals sign separates a query key from a value. A hash begins the fragment section. A slash separates path segments. If a user-provided value includes one of these characters and it is inserted without encoding, the receiving server may interpret the URL incorrectly. For example, the value red & blue should be encoded before it is placed inside a query parameter. Otherwise the ampersand could be mistaken for the start of a new parameter.
Percent encoding solves that problem by representing bytes with a percent sign followed by two hexadecimal digits. A space can become %20, an ampersand can become %26, and non-ASCII characters are represented using their UTF-8 byte sequence. This is why a single emoji or accented character can become several percent-encoded groups. The encoded result may look less readable, but it is safer for transport through browsers, servers, logs, and APIs.
The most common mistake is encoding the wrong level of a URL. Component encoding is used for one value, such as a query parameter value, a search term, or a path segment. In JavaScript terms, this is similar to encodeURIComponent. It encodes reserved separators because those separators should be treated as literal text within the value.
Full URL encoding is different. It keeps structural characters such as :, /, ?, &, and = readable so the URL remains recognizable as a URL. This mode is useful when a mostly valid URL contains spaces or Unicode characters that need cleanup without destroying the URL structure. This tool includes both modes so you can choose the safer option for your situation.
Decoding is useful when you need to understand what a browser, API client, analytics platform, or redirect chain is actually sending. Long URLs often contain encoded callback URLs, campaign values, search terms, or JSON-like payloads. Decoding turns those sequences back into readable text so you can inspect values, compare links, and find mistakes. The strict decode option helps catch malformed percent escapes, such as a percent sign not followed by two hexadecimal characters.
?q=.The main conversion logic runs locally in the browser. That means your pasted URLs, tokens, test parameters, and debugging strings do not need to leave the page for normal use. You should still avoid sharing private production secrets in any browser tab unless necessary, but local processing makes the tool convenient for day-to-day development. Use the output with your HTTP client, browser address bar, documentation, test suite, or redirect configuration after reviewing the result.