URL encoding (or percent-encoding) converts characters that are not allowed in a URL (like spaces, ampersands, or non-ASCII characters) into a '%' followed by two hexadecimal digits. For example, a space becomes
%20.URL Encoder & Decoder
Paste your text or URL, choose your encoding mode, and get instant results. Supports multi-line batch processing and advanced character inspection.
Input
Characters: 0
Lines: 1
Output
Characters: 0
Status: Ready
Character Transformation Map
Recent History
No recent conversions yet.
Developer API & Webhook Integration
While this tool runs 100% client-side for maximum privacy, you can easily implement the same encoding/decoding logic in your own backend, webhooks, or applications using these ready-to-use snippets.
// JavaScript URL Encoding Example
const text = "https://example.com/search?q=hello world";// Encode URI Component (Recommended for query parameters)
const encoded = encodeURIComponent(text);
console.log(encoded);
// Output: https%3A%2F%2Fexample.com%2Fsearch%3Fq%3Dhello%20world// Decode URI Component
const decoded = decodeURIComponent(encoded);
console.log(decoded);
// Output: https://example.com/search?q=hello world// Base64 Encoding (Unicode safe)
const base64Encoded = btoa(unescape(encodeURIComponent(text)));
const base64Decoded = decodeURIComponent(escape(atob(base64Encoded)));World-Class Encoding Features
Built for developers, marketers, and everyday users who need reliable, instant, and secure URL manipulation without compromising data privacy.
- Real-Time ProcessingInstant encoding and decoding as you type, with zero latency or server round-trips.
- 4 Advanced ModesSupports encodeURI, encodeURIComponent, Base64 (Unicode-safe), and HTML Entities.
- Batch ProcessingPaste multiple URLs or text strings on separate lines and process them all simultaneously.
- Character InspectorVisual breakdown showing exactly which characters were transformed and their hex equivalents.
- Local HistoryAutomatically saves your recent conversions in your browser for quick reference and reuse.
- 100% PrivateAll processing happens locally in your browser. Your URLs, tokens, and API keys never leave your device.
- Developer ReadyIncludes copy-paste API snippets for JavaScript, Python, Node.js, and cURL for easy webhook integration.
- Every DeviceFully responsive from 240px keypad phones to 4K desktops, with touch-friendly controls and keyboard shortcuts.
How to Encode or Decode a URL
No software to install and no account to create. Process any URL or text in seconds.
- 1Select Your ModeChoose between encoding or decoding, and select the specific format (URI, URI Component, Base64, or HTML).
- 2Paste Your TextEnter a single URL, a complex query string, or multiple lines of text for batch processing.
- 3Review & InspectThe output updates instantly. Use the Character Inspector to verify exactly what was changed.
- 4Copy or IntegrateClick 'Copy' to save the result, or use our developer snippets to add this logic to your own apps.
Frequently Asked Questions
encodeURI is used for encoding a complete URL and will not encode characters that have special meaning in a URL (like ?, &, =). encodeURIComponent is used for encoding a single URL parameter value and will encode all special characters, ensuring they are safely passed in a query string.Yes, 100% safe. This tool runs entirely in your browser using client-side JavaScript. Your URLs, API keys, and sensitive parameters are never sent to any server, making it completely private and secure.
Yes. The tool supports batch processing. Simply paste multiple URLs or text strings on separate lines, and the tool will process each line individually while preserving the line breaks.
While this specific web tool is client-side for maximum privacy, we provide ready-to-use JavaScript, Python, Node.js, and cURL code snippets in the Developer API section so you can easily implement the same encoding/decoding logic in your own backend webhooks or applications.
Standard Base64 only supports ASCII characters. Our tool uses a Unicode-safe Base64 method (escaping and unescaping) to ensure that special characters, emojis, and non-Latin scripts encode and decode correctly without corruption.
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