URL Encoder/Decoder

How it works

1. Enter URL or text. 2. Choose Encode or Decode. 3. Click Convert.

When to use it

The URL encoder is essential for:

• Query string parameters: encode values with special characters before inserting them in API URLs.
• Redirect URLs: encode callback and redirect URLs for OAuth and authentication systems.
• Deep links: create mobile app deep links with correctly encoded parameters.
• Tracking URLs: encode UTM parameters containing spaces or special characters for analytics.
• Form actions: prepare URLs with pre-filled data via encoded query strings.

Advantages

Full percent-encoding support. Handles all special characters.

Benefits vs alternatives

Advantages of our tool:

• Bidirectional: encode and decode in the same tool with one click.
• Complete percent-encoding: handles all RFC 3986 reserved characters.
• Privacy: the URL is not sent to external servers.
• Instant: real-time result with no waiting.

Common mistakes to avoid

1. Encoding the entire URL: don't encode the entire URL (including "https://" and separators). Only encode query string parameter values.
2. Double encoding: encoding already-encoded text turns "%20" into "%2520", breaking the URL.
3. Spaces as + or %20: in query strings, spaces can be encoded as "+" or "%20". The choice depends on context (form vs URL).
4. Reserved characters: &, =, ? and # have special meaning in URLs. If they're part of a value, they must be encoded.

Category