Developer Tools
URL Encode / Decode
Encode and decode URL components safely in the browser.
Privacy guaranteed. Your files and text are processed securely and are never permanently stored on our servers.
Free Online URL Encoder & Decoder
When passing data through query parameters in a web address, certain characters (like spaces, ampersands, or equals signs) hold special meaning and can break the routing logic if left unescaped. Our free URL encoder safely translates these special characters into a universally accepted percent-encoded format (e.g., turning a space into %20). Conversely, our URL decoder translates messy, encoded URLs back into readable text.
Essential for Web Developers & Marketers
Whether you are building complex API requests, structuring UTM parameters for a marketing campaign, or debugging broken links, handling URL encoding correctly is non-negotiable. Our utility uses strict RFC 3986 compliance, ensuring that characters like spaces, question marks, and non-ASCII UTF-8 characters (like emojis) are properly escaped so they transmit flawlessly across the internet.
100% Private Local Processing
URLs often contain sensitive data, including authentication tokens, API keys, or private query parameters. You should never paste these into server-side decoding tools. Our encode URL online utility executes entirely within your browser using native JavaScript APIs. Your data is processed locally, meaning it is never logged, stored, or sent to a third-party server, guaranteeing absolute privacy.
FAQ
What is URL encoding?+
URL encoding (or percent-encoding) is a mechanism for converting characters that are invalid or have special meaning in URLs into a safe, encoded format, usually starting with a percent sign (%).
Why do I need to encode URLs?+
If your URL contains spaces, ampersands, or other special characters, the web server might misinterpret them, causing broken links or API errors. Encoding ensures the data is transmitted safely.
How do I decode a URL?+
Paste the messy, percent-encoded URL (e.g., one containing %20 or %3D) into the tool, and it will instantly translate it back into human-readable text.
Is it safe to decode URLs containing passwords or API keys here?+
Yes, absolutely. Our tool processes the text locally within your web browser. Your sensitive URLs are never uploaded or logged by our servers.
Why does a space become %20?+
The space character is invalid in standard URLs. Under percent-encoding rules, a space is represented by the hex code 20, preceded by a percent sign, resulting in %20.
Does this tool support emojis and foreign languages?+
Yes, our encoder fully supports modern UTF-8 characters, meaning you can safely encode Japanese text, emojis, and symbols.
What is the difference between encodeURI and encodeURIComponent?+
Our tool uses encodeURIComponent, which is stricter and encodes characters like /, ?, and &, making it ideal for encoding data placed inside query parameters.
Is this URL encoder free?+
Yes, it is completely free to use with no hidden limits or ads.
Can I encode an entire URL?+
You usually only want to encode the query parameters (the part after the ?). If you encode the entire URL, the http:// prefix will break.
Does this tool work offline?+
Yes, once the page loads, the encoding and decoding logic is handled entirely by your browser, requiring no active internet connection.