URL Encoder / Decoder

Encode, Decode, and Edit URLs Live

Two-mode URL tool: paste any string to percent-encode or decode it, or paste a full URL to inspect and edit its query parameters in a table. The output URL rebuilds in real time as you change values.

Common Use Cases

• Webhook debugging: Decode a percent-encoded request URL to see what your endpoint actually received.
• OAuth flows: Build redirect URIs with multiple query params without manually escaping each value.
• API testing: Encode JSON payloads or special characters that need to ride along in a query string.
• Marketing UTMs: Edit a campaign URL's UTM parameters in a table view instead of hand-editing the string.
• Debugging redirects: Decode the ?next= or ?redirect_uri= parameter on a login flow to verify it's pointing where you expect.

Key Features

• Encode mode: percent-encode any UTF-8 string for safe inclusion in a URL. Mirrors browser encodeURIComponent exactly.
• Decode mode: reverse percent-encoding into readable text.
• Query-string editor: paste a full URL, see every parameter in a key/value table, edit values, add or remove pairs, copy the rebuilt URL.
• Plus-decoding: handles both %20 and + as spaces (form-encoded URLs).

Privacy: Pure JavaScript using the browser's native URL and URLSearchParams APIs. Nothing transmits to any server.