URL Encode Online
Encode and decode URLs instantly with our premium percent-encoding tool. Real-time conversion, batch file processing, encode-all mode, and complete privacy — all in your browser.
Text Input
Encoded Output
Conversion Complete
Your text has been URL-encoded successfully.
Why Use Our URL Encoder?
A complete percent-encoding toolkit built for developers, QA engineers, and everyday users.
Real-Time Encoding
Instantly encode or decode as you type. See results in real-time with zero latency and zero server calls.
Encode & Decode
Switch between URL encode and decode modes with one click. Full bidirectional support for any percent-encoded string.
Batch File Processing
Upload .txt files up to 25 MB for batch encoding or decoding. Drag-and-drop supported with progress tracking.
100% Private & Secure
All processing happens in your browser. No data uploaded, stored, or transmitted. No cookies, no tracking.
Encode All Characters
Toggle "Encode All" to encode every character including alphanumerics. Useful for strict encoding requirements.
Mobile-First Design
Fully responsive with touch-optimized controls. Works perfectly on phones, tablets, and desktops.
How to Use the URL Encode Online Tool
Follow these simple steps to encode or decode URLs in seconds.
Select Encode or Decode Mode
Choose "Encode URL" to convert text to percent-encoded format, or "Decode URL" to convert back to readable text.
Enter Text or Upload a File
Type or paste text in the input area, or drag and drop a .txt file. Enable "Encode All" for maximum encoding.
Watch Real-Time Conversion
The output appears instantly. On desktop, use the split-view to compare input and output side by side.
Copy or Download the Result
Click "Copy" for clipboard, or "Download" to save as .txt. Use "Paste" to quickly import content.
Clear and Start Over
Click "Clear All" to reset everything. Swap between encode and decode modes anytime with one click.
What is URL Encoding?
URL encoding, also known as percent-encoding, is a mechanism for encoding information in a Uniform Resource Identifier (URI) under certain circumstances. It converts characters into a format that can be transmitted over the Internet. Special characters are replaced with % followed by two hexadecimal digits representing the character's ASCII or UTF-8 value. For example, a space becomes %20, an ampersand becomes %26, and a question mark becomes %3F.
How Does the URL Encoder Work?
Our URL encoder online converts your text into a URL-safe format using the encodeURIComponent() function, which is the same standard used by JavaScript. It replaces reserved characters (! * ' ( ) ; : @ & = + $ , / ? # [ ]) and unsafe characters (< > " # % { } | \ ^ ~ [ ] `) with percent-encoded values. This ensures your data can be safely transmitted in URLs, query strings, and form data without breaking the URL structure.
How to Encode a URL Online
Simply paste your text into the input area, select "Encode URL" mode, and the tool will instantly generate the URL-encoded version. You can also upload a .txt file for batch processing. The encoded output can be copied to your clipboard or downloaded as a .txt file. Enable the "Encode All Characters" option to encode every character including alphanumerics for strict encoding requirements.
JavaScript URL Encode: A Developer's Guide
JavaScript provides two built-in functions for URL encoding: encodeURI() and encodeURIComponent(). The encodeURIComponent() function is more commonly used because it encodes all reserved characters, making it ideal for encoding query string parameters. Example: encodeURIComponent("hello world") returns "hello%20world". Our online URL encoder uses the same standard, making it perfect for developers testing URL encoding without writing code.
URL Decode Online: Reverse the Process
Our tool also supports URL decoding, allowing you to convert percent-encoded strings back to readable text. Simply switch to "Decode URL" mode, paste your URL-encoded string like hello%20world%26foo%3Dbar, and get the decoded version hello world&foo=bar instantly. The tool validates the percent-encoding format and reports any malformed sequences.
URL Encoding vs HTML Encoding
URL encoding is used for URLs and query strings and uses the %XX format. HTML encoding is used for displaying characters in HTML documents and uses the &entity; format (e.g., < for <). They serve different purposes and are not interchangeable. Our tool specializes in URL encoding and decoding online using RFC 3986 standards.
Why Use Our Online URL Encoder?
Unlike other tools, our URL encoder online offers a premium glass-morphism UI with dark mode, real-time encoding with split-view preview, batch file processing up to 25 MB, copy and download capabilities, an "Encode All Characters" mode, URL validation indicators, and 100% client-side privacy. No data is uploaded to any server. No ads, no tracking, no cookies.
Frequently Asked Questions
Common questions about URL encoding, decoding, and this tool.
% followed by two hexadecimal digits representing the character's ASCII or UTF-8 value. For example, a space becomes %20 and & becomes %26.encodeURIComponent() function to convert a string to a URL-safe format. It encodes all reserved and unsafe characters, making it safe for use in query strings and form data. Example: encodeURIComponent("hello&world") returns "hello%26world". Our tool uses the same encoding standard.decodeURIComponent() function to decode URL-encoded strings back to readable text. Example: decodeURIComponent("hello%20world") returns "hello world". Our online tool offers the same functionality without writing any code.encodeURI() encodes a complete URI but does not encode reserved characters like / ? : @ & = + $ #. encodeURIComponent() encodes all reserved characters and is better suited for encoding query string parameters and form data. Our tool defaults to encodeURIComponent() behavior for maximum compatibility and safety.%XX) for URLs and query strings. HTML encoding uses entity references (like < for <) for displaying characters safely in HTML documents. They serve different purposes and are not interchangeable.! * ' ( ) ; : @ & = + $ , / ? # [ ]), unsafe characters (< > " # % { } | \ ^ ~ [ ] `), and any non-ASCII characters including Unicode and emojis. Alphanumeric characters (A-Z, a-z, 0-9) and - _ . ! ~ * ' ( ) are not encoded by default. Enable "Encode All Characters" to encode everything.Privacy Guarantee: All URL encoding and decoding operations are performed entirely in your browser. No text, files, or data are uploaded, stored, or transmitted to any server. Your data never leaves your device. 100% private and secure. No cookies, no tracking, no ads.
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