URL Encoder Decoder

Easily encode or decode URLs online to ensure safe data transmission and make your web links perfectly formatted for sharing

Input 0 chars

Tip: Use Encode URL to make a URL safe for query strings, or Decode URL to reverse percent-encoded characters like %20 → space. Shortcut: Ctrl+Enter to encode.

Output

All processing happens 100% in your browser. No data is sent to any server. Supports full Unicode via encodeURIComponent.

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How to Use This URL Encoder Decoder

Encoding or decoding a string takes just a few steps:

Paste Your Text or URL

Type or paste the string you want to convert into the input box. A live character counter tracks the length as you type. If you need to manage your text parameters more precisely, you can also use our Word Counter to get an advanced breakdown of your characters.

Choose Encode or Decode

Click “Encode URL” to convert special characters, spaces, and non-ASCII symbols into percent-encoded format, or click “Decode URL” to reverse an already-encoded string back into readable text.

Review & Copy Your Result

The converted output appears instantly below with a success or error status. Click “Copy” to send the result straight to your clipboard, or use Ctrl+Enter to encode instantly.

Free Online URL Encoder Decoder

Need to convert a string into a safe, percent-encoded URL, or turn an encoded string back into readable text? Our free online URL Encoder Decoder does both in the same box, entirely inside your browser. Paste your text or URL, click Encode or Decode, and get an instant, accurate result with full Unicode support. No software to install, no sign-up, and no file ever uploaded to a server.

Whether you’re building a query string for an API, debugging a redirect URL full of percent-encoded characters, or preparing user input to be safely included in a link, this tool handles it in one click. If your inputs require modifying capitalization style first, consider processing them with our Case Converter before finalizing your URL parameters.

Full Unicode Support & Advanced Error Handling

This tool uses encodeURIComponent and decodeURIComponent under the hood, which means it correctly handles the full Unicode character set, not just basic ASCII text. Non-English characters, emoji, and multi-byte symbols are all encoded and decoded accurately, which matters if your URLs or query strings include names, addresses, or content in any language.

Malformed percent-encoded strings, like a stray % that isn’t followed by two valid hexadecimal digits, will break most decoders with a generic failure. This tool instead shows a specific, readable error message explaining what went wrong, so you can spot and fix the problem in your input rather than guessing why decoding failed. If you need to perform more intricate pattern matching or syntax validating on complex string payloads, you may also find our custom Regex Tester highly beneficial.

                    
                    100% Private URL Processing: This tool encodes and decodes your input entirely inside your browser using JavaScript, with no server involved at any point. Your text is never uploaded, never stored, and never seen by anyone else. This makes it a safe choice for encoding or decoding URLs that contain sensitive query parameters, internal tokens, or private data.
                

Why URL Encoding Matters

URLs can only safely contain a limited set of ASCII characters. Anything outside that set, including spaces, ampersands, question marks, and non-English characters, needs to be converted into percent-encoded form so it can be transmitted correctly and interpreted the same way by every browser, server, and API involved. Skipping this step can break a link entirely, silently corrupt query parameters, or in some cases create a security issue if user input isn’t properly encoded before being inserted into a URL. When dealing with parameters containing secure identifiers or cryptographic signatures, you can securely generate hashes using our Hash Generator tool.

Tips for Getting the Best Results

Use “Encode URL” on raw, human-readable text or query values, and “Decode URL” when you already have a percent-encoded string.
If decoding fails, check for a stray % character that isn’t followed by two valid hexadecimal digits.
Remember that encoding a string that’s already encoded will double-encode it, turning a %20 into %2520.
Use the Ctrl+Enter shortcut if you’re encoding many strings back to back during development.
Always copy the result rather than manually selecting text to avoid missing leading or trailing characters.

Who Uses This Tool?

Useful anytime you need to safely encode or decode a URL or query string:

Web Developers: Encoding query parameters, form values, or path segments programmatically. For structuring the final returned JSON object, you can rely on our JSON Formatter.
API Developers: Preparing request parameters that include spaces or special characters.
QA Engineers: Decoding captured URLs from logs or browser dev tools to inspect data.
Digital Marketers: Decoding long tracking or campaign URLs to check embedded parameters.
Security Researchers: Decoding suspicious or obfuscated URLs to inspect actual content safely.

This Tool vs. Typical URL Encoder Decoder Sites

Feature	Typical URL Encoder Decoder Sites	Our URL Encoder Decoder
Default Location	Often server-side by default, with an optional “live” mode	Always client-side, no toggle required
File Upload Option	Common, with files deleted after a retention window	Not needed, since there’s no file upload path at all
Operation Field	Sometimes requires selecting a mode from a dropdown first	Paste once, choose either action with one click
Error Message Specificity	Often a generic failure message	Specific explanation of what part of the input is malformed
Unicode Support	Usually supported, sometimes requires selecting a character set	Full Unicode by default via encodeURIComponent

Frequently Asked Questions

Find comprehensive answers to common questions regarding our real-time URL text analysis, browser processing, and privacy standards.

Does this tool upload my text to a server?

No. All encoding and decoding happens directly in your browser using JavaScript. Your input is never uploaded, stored, or shared with any server or third party.

Does this tool support non-English characters and emoji?

Yes. Since it uses encodeURIComponent and decodeURIComponent, full Unicode text, including non-English characters and emoji, is encoded and decoded correctly.

What happens if I try to decode an invalid or incomplete percent-encoded string?

You’ll get a specific, readable error message explaining that the input contains an incomplete or invalid percent-encoded sequence, rather than a generic failure.

What’s the difference between URL encoding and HTML encoding?

URL encoding, or percent-encoding, prepares text to be safely included in a URL. HTML encoding is a separate process used for safely rendering characters like < and & inside HTML markup. This tool handles URL encoding specifically.