URL Encoder Decoder Online

Why Use URL Encoder Decoder Online?

Copy a search URL that contains a space or an ampersand and the server on the other end may receive a truncated query — the browser quietly silently cut the parameter at the first unescaped delimiter. URL encoding is the fix, but hand-encoding with a percent table is tedious and error-prone. A good encoder does two things: lets you pick the right RFC (`encodeURIComponent` for single parameter values vs. `encodeURI` for whole URLs), and preserves the characters that are already valid so you don't double-encode. The decoder is just as useful for reading logs and network tabs where everything is percent-escaped.

How to Use URL Encoder Decoder Online

1. Enter the URL or text you want to encode in the input field.
2. Click 'Encode' to convert special characters to percent-encoded format (%20, %3A, etc.), or paste an encoded URL and click 'Decode' to make it readable.
3. Copy the result with the copy button.
4. Pick encodeURIComponent for individual query-parameter values, or encodeURI for whole URLs that already contain /, ?, and #.
5. Toggle 'decode + as space' if your input came from an HTML form body (application/x-www-form-urlencoded).

About URL Encoder Decoder Online

URL encoding, also called percent-encoding, replaces characters that are unsafe or reserved in a URL with a % followed by their hexadecimal byte value. A space becomes %20, an ampersand becomes %26, and an emoji becomes a multi-byte UTF-8 sequence like %E2%98%95. This tool encodes text into percent-encoded form and decodes encoded strings back into readable form, entirely in your browser. It offers both standard modes: encodeURIComponent for encoding individual query-parameter values, and encodeURI for encoding whole URLs while preserving the reserved characters (:, /, ?, #) that give a URL its structure. Unicode characters and emoji are handled correctly through UTF-8. Web developers building query strings are the core audience: every filter value, redirect URL and search term that goes into a link needs encoding before it is safe. API developers encode parameters before firing requests and decode the percent-escaped values they find in server logs and network tabs. Marketers and SEO folks debug UTM parameters, redirect chains and affiliate links that arrive fully escaped. QA engineers copy failing URLs from bug reports and decode them to read what the user actually typed. If a URL contains anything beyond plain ASCII, this tool earns a bookmark. A browser-based encoder wins on two fronts: correctness and privacy. Hand-encoding against a percent table is slow and error-prone, and the classic mistake is using encodeURIComponent on a whole URL, which escapes the :// and ? and produces a broken link. This tool makes the mode choice explicit so that error disappears. Privacy matters because URLs routinely carry session IDs, tokens and private query parameters; nothing you paste here leaves your device, so decoding a production URL from a log file carries no exposure risk. It is free, instant and requires no signup, which is exactly what you want when a request is failing and the clock is ticking. A few practical traps. First, pick the mode deliberately: encodeURIComponent is for values (it escapes & = ? / so they cannot break the query string), encodeURI is for complete URLs (it leaves those delimiters intact). Second, watch out for double encoding: if you paste an already-encoded URL into the encoder, every % becomes %25, and the server will receive literal %20 text instead of spaces. Third, browsers display decoded URLs in the address bar, so a copied link may look fine while the underlying value is still escaped, which confuses debugging. Fourth, some servers follow strict RFC 3986 rules and reject characters that older browsers leave alone, so when a request is rejected as malformed, stricter encoding is the first thing to try.