MetoolzyURL Encoder / Decoder
Encode & Decode
encodeURIComponent and encodeURI modes.
Real-time
Results update as you type.
Copy Result
One-click copy to clipboard.
Client-side
All processing in your browser. No data uploaded.
About URL Encoder / Decoder
URL encoding, also called percent-encoding, converts characters that are not allowed or have special meaning in URLs into a safe format. Each unsafe character is replaced by a percent sign followed by its two-digit hexadecimal code point — for example, a space becomes %20 and an ampersand becomes %26. This tool supports two standard JavaScript functions: encodeURIComponent encodes everything except letters, digits, and the characters - _ . ! ~ * ' ( ), making it ideal for encoding individual query parameter values. encodeURI encodes a full URL and preserves characters like : / ? # & = that have structural meaning in a URL. Proper URL encoding is essential for building web applications, constructing API request URLs, handling form submissions, and ensuring links work correctly across browsers and operating systems. Decoding lets you inspect encoded URLs and query strings in a human-readable form. This tool processes everything client-side so your data stays private.
How to Use URL Encoder / Decoder
- Choose "Encode" to percent-encode text or "Decode" to convert encoded strings back to plain text.
- Select the encoding scope: use "encodeURIComponent" for a single value (e.g., a query param), or "encodeURI" for a full URL.
- Type or paste your text into the input field.
- The encoded or decoded result appears instantly in the output field.
- Click "Copy" to copy the result to your clipboard.
Frequently Asked Questions
What is the difference between encodeURIComponent and encodeURI?
encodeURIComponent encodes almost everything except basic alphanumeric characters, making it suitable for encoding individual query parameter values. encodeURI preserves characters that are structurally part of a URL (like /, ?, #, &) so it is meant for encoding complete URLs.
Why does a space become %20 and not +?
%20 is the standard percent-encoding for a space. The + notation for spaces is specific to the application/x-www-form-urlencoded format used in HTML form submissions, not in general URLs.
When would I need to URL-encode a string?
Whenever you embed a value inside a URL — such as a search query, a file path, or a user-provided parameter — you should URL-encode it to prevent special characters from breaking the URL structure or being misinterpreted by the server.
Can I URL-decode multiple parameters at once?
Yes — paste the full query string (e.g., name=John%20Doe&city=S%C3%A3o+Paulo) and switch to Decode with encodeURIComponent mode to see the decoded result. Each parameter will be decoded inline.
Is this tool safe for sensitive data?
All processing happens in your browser with no server communication, so your data remains private. That said, URL encoding is not encryption — encoded values can be decoded by anyone who sees them.
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The Ultimate URL Encoder / Decoder
URL Encoder / Decoder is a powerful, free online tool designed to simplify your digital workflow. Encode or decode URL components and full URIs. Client-side only.
In today's fast-paced digital world, efficiency is key. Whether you're a developer, designer, or digital marketer, finding reliable utilities is crucial. With our URL Encoder / Decoder, you can get things done instantly right in your browser, with absolutely no signup required.
Why Use Our URL Encoder / Decoder?
Our tool is built with performance and privacy in mind. All processing is incredibly fast, ensuring you don't waste any time.
- 100% Free: No hidden fees or premium paywalls.
- No Installation: Works instantly in any modern web browser.
- Privacy First: We respect your data. Most processing happens directly on your device.
- User-Friendly: A clean, intuitive interface that anyone can use without technical skills.
How it benefits your workflow
Integrating the URL Encoder / Decoder into your daily routine saves you valuable time. Instead of downloading bulky software or writing custom scripts, you can bookmark this page and solve your problem in just a few clicks.
Try it out today and experience the easiest way to handle your tasks!
Top 10 Free Tools Every Developer Needs
Boost your productivity instantly. Get our exclusive cheatsheet featuring the most essential web utilities you didn't know you needed, delivered straight to your inbox.
We respect your inbox. Unsubscribe at any time.