URL encoder and decoder for query strings, APIs and redirects

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.