readme.now

URL Encoder

Encode text to URL-safe format instantly. Free online URL encoder with real-time conversion and copy functionality.

URL Encoder
Text Input
URL Encoded Output

Safe URL Parameter Encoding

Ensure your data is safely transmitted through browser address bars. Our URL encoder converts special characters into percent-encoded equivalents, preventing breaks in query strings.

Local Only

"Instant results without any network round-trips or server-side logging."

Choose the URL encoding operation deliberately

URL-component mode protects text embedded in a query value or path segment. Key-character mode targets commonly significant characters. All-character mode percent-encodes every UTF-8 byte, including ASCII letters and digits.

Example input

café & plan=pro

Expected output

caf%C3%A9%20%26%20plan%3Dpro

Behavior

  • Unicode is converted to UTF-8 before percent encoding.
  • Each selected level performs one complete encoding pass.
  • All-character mode also encodes normally unescaped ASCII characters.

Limits and edge cases

  • Encoding a complete URL as one component also encodes its separators.
  • The legacy %uXXXX mode is not standard URL percent encoding.
  • Repeated encoding should be used only when the receiving system expects it.

Processing note: tool input stays in the browser. Readme.now analytics records page usage, not the payload you paste or the generated output.

Authoritative reference: RFC 3986: URI generic syntax

Related tools

Continue the workflow without copying data to a server.

Decode a URLReverse percent-encoded text deliberately.Base64 encodeEncode UTF-8 text as Base64.Encode payloadsApply controlled multi-level encoding.