URL Encoder & Decoder
Encode and decode URL strings online for free
What is URL Encoder & Decoder?
The URL Encoder & Decoder is a free online tool that converts special characters to percent-encoded format for safe use in URLs, and decodes percent-encoded strings back to readable text, all instantly in your browser. URLs can only contain a limited set of characters — spaces, ampersands, equals signs, question marks, and non-ASCII characters must be encoded as %XX sequences to avoid breaking the URL structure. This is essential when building query strings, passing parameters in API requests, creating redirect URLs, or handling user-submitted data in web forms. This tool handles both encoding and decoding in one place, making it easy to construct valid URLs, debug encoded strings from server logs, and understand what encoded URL parameters actually contain.
Why Use DevBench URL Encoder & Decoder?
DevBench tools are built with one principle: everything runs in your browser. Unlike most online tools that upload your data to remote servers, DevBench processes everything locally using client-side JavaScript. This means your files, code, and sensitive data never leave your device. There are no accounts to create, no usage limits, no watermarks, and no paywalls. Every tool on DevBench is completely free to use as many times as you need. Whether you are a professional developer, a student learning to code, or someone who occasionally needs a quick utility, DevBench gives you instant access to powerful tools without friction.
How to Use URL Encoder & Decoder
Using the URL Encoder & Decoder is straightforward and requires no installation or sign-up. Follow these steps to get started:
- Enter URL or text in the input field
- Click "Encode" to convert special characters to percent-encoding
- Click "Decode" to convert percent-encoded URL back to readable text
- Copy the result using the Copy button
- Use for URL parameters, query strings, and API requests
All processing happens directly in your browser, so your data stays private and results are instant.
Examples
Here are some common examples of how the URL Encoder & Decoder is used in real-world scenarios:
- Encode "Hello World" to "Hello%20World" for URLs
- Encode special characters like & = ? for query parameters
- Decode "%20" back to spaces in URLs
- Encode email addresses for mailto links
- Encode search queries for URL parameters
Use Cases
The URL Encoder & Decoder is used by developers, designers, and professionals across many industries. Common use cases include:
- Encoding URL parameters for API requests
- Encoding search queries in URLs
- Encoding special characters in query strings
- Decoding URLs from server logs
- Encoding email addresses for mailto links
- Encoding file paths in URLs
- Decoding encoded URLs for debugging
- Encoding form data for GET requests
- Encoding special characters in redirects
- Decoding URL parameters from analytics
Whether you are a beginner learning the basics or an experienced developer working on complex projects, this tool is designed to fit seamlessly into your workflow.
Frequently Asked Questions
Here are answers to the most common questions about the URL Encoder & Decoder:
What is URL encoding?
URL encoding (percent-encoding) converts special characters to %XX format so they can be safely transmitted in URLs.
Why do URLs need encoding?
URLs can only contain certain characters. Special characters like spaces, &, =, ? must be encoded to avoid breaking URLs.
What characters need encoding?
Spaces, &, =, ?, #, %, +, and non-ASCII characters must be encoded in URLs.
Is URL encoding the same as Base64?
No, URL encoding uses percent-encoding (%20) while Base64 converts data to alphanumeric strings.
Can I encode entire URLs?
Yes, but typically only the query parameters and path segments need encoding, not the protocol or domain.