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Developer Tools

URL Encoder Decoder

Encode and decode URL strings for safe query and path handling.

Last validated: 2026-02-14

URL Encoder Decoder converts text to percent-encoded URL format and back to plain text. Use it when handling query parameters, callback URLs, or path values that include spaces and reserved characters. It helps prevent broken links and parsing errors caused by improper encoding. The tool is also useful for troubleshooting integrations where one system double-encodes or fails to decode values correctly.

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Input Pattern

Enter values in the left panel, keep units explicit, run the calculation, then copy or share the result. Invalid fields are highlighted immediately.

URL Encode / Decode

Result

https%3A%2F%2Fexample.com%2Fsearch%3Fq%3Dtool+patch%26lang%3Den

How to use this tool

  1. Choose Encode or Decode mode depending on your input format.
  2. Paste the value, run the tool, and copy the transformed output.
  3. Test the output in the target URL or API call to verify correct behavior.

Worked Example

Auto-generated from the tool's current default or entered inputs.

Example Inputs

  • Mode: encode
  • Input text: https://example.com/search?q=tool patch&lang=en

Expected Outputs

Interpretation

Scenario Compare (A vs B)

Use this to compare two input sets and quantify change in key outputs.

Scenario A

Scenario B

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