URL Encoder/Decoder

URL encoding (also called percent-encoding) converts characters that aren't allowed in URLs into a safe format using percent signs followed by two hexadecimal digits. URLs can only contain a limited set of characters: unreserved characters (A-Z, a-z, 0-9, hyphen, underscore, period, tilde), reserved characters that have special meaning in URLs (/, ?, #, &, =, :, @), and percent-encoded representations of all other characters. Spaces become %20 (or + in query strings), ampersands become %26, equals signs become %3D, and non-ASCII characters like Arabic, Chinese, or accented Latin characters are encoded as their UTF-8 byte sequences in percent format. This is why URLs containing non-English text look like long strings of percent-encoded characters when copied from browsers. Two encoding functions exist in JavaScript: encodeURIComponent() encodes everything except unreserved characters and is used for individual URL components like query parameter values. encodeURI() preserves reserved characters and is used for complete URL strings. The AllTools URL Encoder and Parser applies the correct encoding for your use case, processing everything locally without transmitting your potentially sensitive URL parameters to any server.

URL parsing breaks a complete URL into its component parts for analysis and manipulation. A full URL contains multiple distinct components: the scheme (https://), the optional authentication (user:password@), the host (subdomain.domain.tld), the optional port (:443), the path (/articles/slug), the query string (?key=value&another=value), and the fragment (#section-anchor). Query strings are particularly important for web developers — they pass parameters from clients to servers, track marketing campaign sources (UTM parameters), paginate results, and store application state. Parsing query strings reveals all parameters and their decoded values. URL parsing is essential for debugging API requests that fail due to malformed parameters, analyzing redirect chains, cleaning affiliate tracking parameters from URLs before sharing, and generating canonical URL forms for SEO. The AllTools URL Parser handles all these cases in the browser using the Web API's URL and URLSearchParams interfaces, providing reliable, spec-compliant parsing that matches how browsers natively interpret URLs.