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Free browser-based developer tool

URL Encoder Decoder

Encode and decode URLs, query strings, spaces, special characters, tracking links, API parameters, and URL components instantly in your browser.

Encode URL Now How It Works

URL Encoding Tool

Paste a URL, encoded string, or query parameter and choose a conversion mode.

Input 0 characters
Active mode: Encode URL Waiting for input
Output 0 characters
— Status
0 Input Chars
0 Output Chars
No Looks Encoded
0 Special Chars
0 Query Params

Query String Preview

Inspect query parameters from URLs and tracking links.

Paste a URL with query parameters to preview them here.

Best Use Cases

Common workflows for developers, marketers, SEO specialists, and testers.

Encode API parameters Safely encode query values before using them in requests and API URLs.
Decode tracking links Make long encoded UTM links, redirect URLs, and campaign URLs easier to inspect.
Debug broken links Fix URLs with spaces, symbols, unsafe characters, or incorrect percent encoding.

Free Online URL Encoder and Decoder

This URL Encoder Decoder helps you encode URLs, decode URLs, convert URL components, inspect query strings, copy results, and process links directly in your browser.

It is useful for developers, SEO specialists, marketers, testers, analytics users, API users, and anyone working with query strings, redirect URLs, tracking links, encoded parameters, or special characters in web links.

What is URL encoding?

URL encoding, also called percent encoding, converts unsafe or reserved characters into a URL-safe format. For example, spaces can become %20 and special characters can be represented by percent-encoded sequences.

What can this URL Encoder Decoder do?

  • Encode full URLs: Preserve URL structure while encoding unsafe characters.
  • Decode URLs: Convert encoded URLs into readable text.
  • Encode URL components: Encode query parameter values safely.
  • Decode URL components: Decode encoded query values or URL fragments.
  • Auto detect: Automatically choose whether to encode or decode the input.
  • Query preview: View parsed query parameters from URLs.

encodeURI vs encodeURIComponent

encodeURI is useful when you want to encode an entire URL while preserving structure characters like colon, slash, question mark, and ampersand. encodeURIComponent is better when encoding individual query parameter values, because it encodes more reserved characters.

Common URL encoding use cases

  • Encoding search query values before adding them to a URL.
  • Decoding UTM campaign links and tracking parameters.
  • Inspecting encoded redirect URLs.
  • Fixing links that contain spaces or unsafe characters.
  • Preparing API request URLs and query parameters.

Privacy and browser-based processing

This URL Encoder Decoder runs locally in your browser. Your URLs and query strings are not uploaded to a server, which makes it convenient for quick development, SEO, analytics, and testing workflows.

Frequently Asked Questions

Is this URL Encoder Decoder free?

Yes. This URL encoding tool is completely free to use online.

Does this tool upload my URLs?

No. Everything is processed directly in your browser.

What is URL encoding?

URL encoding converts unsafe or reserved characters into a safe percent-encoded format for use in URLs.

What is the difference between encodeURI and encodeURIComponent?

encodeURI keeps URL structure characters readable, while encodeURIComponent encodes more characters and is better for query parameter values.

Can I decode query strings?

Yes. Paste a URL with query parameters and the tool can decode and preview the query values.