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URL encoder and decoder for query strings, APIs and redirects

Encode or decode URLs, query strings and percent-encoded text. Your data stays in your browser whenever the task can be processed locally.

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URL Encoder / Decoder

Good to know

URL encoding converts reserved characters into percent-encoded sequences so text can safely travel inside URLs and query strings.

url encoderurl decoderpercent encodingquery stringurl encode online

Understand

Understand URL Encoder / Decoder

What is URL Encoder / Decoder?

URL encoding converts reserved characters into percent-encoded sequences so text can safely travel inside URLs and query strings.

Main use case: Encode or decode a URL, query parameter, redirect target, tracking link or API parameter.

Common use cases

API debugging
Decode parameters passed through webhook URLs or API calls.
Tracking links
Prepare campaign URLs with safe encoded values.
Form validation
Check how user input is represented inside URLs.

How to use the tool

  1. Paste readable text or an encoded URL.
  2. Edit either side of the converter.
  3. Review the decoded or encoded output.
  4. Copy the safe URL value.

Best practices

  • Use realistic test values when validating forms, exports or API payloads.
  • Keep real customer, banking and production secrets out of public tools.
  • Check the output format before copying it into a production workflow.
  • Document whether a value is generated, validated, converted or only estimated.

Common mistakes

Confusing valid format with real-world validity
A generated or locally validated value can match a format without proving that it exists in an official system.
Using real production data
Public utilities are best for test data, demos, fixtures, QA and quick checks, not for confidential values.

Related terms and searches

URLquery stringpercent encodingredirecttracking URLAPI parameterurl encode onlineurl decode query stringpercent encoding decoder

Continue with

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FAQ

Frequently asked questions

What is URL encoding?

URL encoding replaces reserved characters with percent-encoded values, for example spaces can become %20.

When should query parameters be encoded?

Encode query parameters when they contain spaces, symbols, accents, URLs or other reserved characters.

Is URL encoding encryption?

No. URL encoding is reversible formatting, not a security mechanism.

Are my inputs sent to a server?

OnSubmit tools run in the browser whenever the task can be processed locally. Avoid pasting production secrets, real banking details or personal data into public tools.