Free URL Encoder & Decoder Online
Encode and decode URL components instantly in your browser. Percent-encodes special characters. No data sent to servers.
How to use
- 1
Paste your text or URL
Enter the text or URL you want to encode or decode.
- 2
Click Encode or Decode
Encode converts special characters to percent-encoded form. Decode reverses it.
- 3
Copy the result
Use the Copy button to copy your encoded or decoded output.
Why use this tool?
- Runs entirely in your browser with no server calls
- Handles all percent-encoded characters including %20 spaces
- Shows clear errors for malformed percent-encoding sequences
- Useful for building query strings, API calls, and debugging URLs
Frequently asked questions
- What is URL encoding?
- URL encoding (percent-encoding) converts characters that are not allowed in URLs - like spaces, &, =, and # - into a safe format using a % followed by two hex digits (e.g., space becomes %20).
- When do I need to URL encode?
- When building query parameters, embedding URLs inside other URLs, or working with APIs that require encoded inputs.
- Is this the same as encodeURIComponent?
- Yes, this tool uses the same encoding as JavaScript's encodeURIComponent function.
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