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Convert web links, search parameters, and special UTF-8 characters into RFC 3986 percent-encoded strings or decode percent-encoded URLs instantly. Zero network transmission guarantees complete data privacy.
Choose Encode URL or Decode URL. Select encodeURIComponent for query parameters or encodeURI for full links.
Paste any URL, query string, or UTF-8 text into the input panel. The tool converts your text live in real time as you type.
Click Copy Output to transfer results to your clipboard, or review the auto-extracted query parameter breakdown table below.
Your URLs, query strings, and parameters are processed completely inside browser memory. Zero server transmission.
Choose between strict component encoding (encodeURIComponent for query params) and URI encoding (encodeURI for full links).
Toggle between standard percent-encoded spaces (%20) and application/x-www-form-urlencoded plus (+).
Inspect character counts, encoded byte sizes, and auto-parsed URL query parameters in real time.
Copy encoded/decoded output instantly or swap input and output text with a single click.
Test immediately using built-in URL samples containing UTF-8 characters, special symbols, and search parameters.
Our URL Encoder & Decoder is fully open-source under HiMat Technology. Star the repository, audit the JavaScript URI parser, or submit contributions on GitHub.
Unlike traditional web converters that send query parameters or authorization strings to server logs, HiMat's URL Encoder & Decoder executes 100% locally inside your browser runtime. OAuth tokens, tracking parameters, and API endpoints are never transmitted across any network interface.
Encode and decode text, binary files, and images to standard Base64 or URL-safe Base64 strings.
Format, beautify, validate, minify, and auto-repair complex JSON payloads client-side with zero server transmission.
Decode, inspect, and debug JSON Web Token headers, payloads, and claims with 100% client-side privacy.
No. The HiMat URL Encoder & Decoder operates 100% locally in your web browser using standard JavaScript encodeURIComponent / decodeURIComponent APIs. No data is sent over the network.
encodeURI preserves special URL characters like ':', '/', '?', and '#' so that a full web link remains usable. encodeURIComponent encodes all special characters, making it safe for query string parameter values.
Standard RFC 3986 percent-encoding uses '%20' for spaces in URLs. HTML form submission (application/x-www-form-urlencoded) uses '+' for spaces in query strings. Our tool lets you toggle both.
Yes, 100% free with no account required, no usage limits, and zero advertisements.
HiMat Technologies builds scalable SaaS architectures, custom microservices, multi-agent AI platforms, and high-performance digital products for modern software teams.