URL Encoder & Decoder
Encode or decode URLs, parse URL components, and edit query string parameters as an interactive table. All processing happens in your browser.
Features
Dual Encoding Modes
Choose between encodeURIComponent for individual values or encodeURI for full URLs.
URL Component Parser
Break any URL into protocol, host, path, query, and hash components instantly.
Query String Editor
Edit query parameters as an interactive table — add, modify, or remove key-value pairs.
Rebuild URLs
After editing parameters, rebuild the URL with properly encoded values in one click.
Real-time Processing
Output updates instantly as you type — no buttons needed for encoding or decoding.
100% Client-side
All processing runs in your browser. No data is ever sent to a server.
About URL Encoding
URL encoding (also known as percent-encoding) is a mechanism for encoding characters that are not allowed in a URL into a format that can be safely transmitted over the internet. Special characters like spaces, ampersands, and non-ASCII characters are replaced with a percent sign (%) followed by two hexadecimal digits representing the character's UTF-8 byte value.
JavaScript provides two main functions for URL encoding: encodeURIComponent encodes all special characters and is ideal for encoding individual query parameter values, while encodeURI preserves URL-structural characters like :/?# and is meant for encoding complete URLs. Choosing the right function prevents common bugs like double-encoding or breaking URL structure.
Our tool provides both encoding functions, plus a URL parser that breaks any URL into its components and an interactive query string editor that lets you modify parameters visually. Everything runs entirely in your browser with no server calls.
Frequently Asked Questions
What is the difference between encodeURIComponent and encodeURI?▼
encodeURIComponent encodes all special characters including :/?#[]@!$&'()*+,;= and is used for individual query parameter values. encodeURI preserves URL-structural characters and is used for complete URLs. Using the wrong one can either break your URL structure or fail to encode values properly.
When do I need to URL-encode data?▼
You need URL encoding whenever you include user input, special characters, or non-ASCII text in a URL — especially in query parameters. Spaces become %20, ampersands become %26, and so on. Without encoding, these characters can break URL parsing or cause security issues.
What is percent-encoding?▼
Percent-encoding is the formal name for URL encoding. Characters are replaced with a percent sign (%) followed by two hexadecimal digits representing the UTF-8 byte value. For example, a space becomes %20, and an ampersand becomes %26.
Can I parse and edit query parameters with this tool?▼
Yes. Paste a full URL and click 'Parse URL' to see all components broken down. The query parameters are displayed as an editable table where you can add, modify, or remove key-value pairs, then rebuild the URL with the changes.
Is my data safe when using this tool?▼
Yes. All encoding, decoding, and parsing is performed entirely in your browser using JavaScript. Your data is never uploaded to any server.