URL Encoder / Decoder

URL Encoder and Decoder — Percent-Encoding Made Easy

Encode URLs and query parameters or decode percent-encoded strings instantly with this free online URL encoder/decoder. Special characters like spaces, ampersands, question marks, and non-ASCII text break URLs unless they are properly percent-encoded — this tool does it correctly in one click, entirely in your browser.

It supports both encodeURIComponent-style encoding (for query string values) and full-URI encoding, so you can safely build API requests, share links with special characters, debug redirect chains, and inspect what an encoded tracking URL actually contains.

How to URL-Encode or Decode a String

Paste your text or URL

Drop in the raw string you want to encode, or the %-encoded string you want to decode.
Pick encode or decode

Choose the direction — the conversion updates live as you type.
Choose component or full URL mode

Encode a single query parameter value, or encode a full URL while preserving its structure.
Copy the result

One click copies the safely encoded (or human-readable decoded) string to your clipboard.

Features of the URL Encoder / Decoder

Component and full-URI modes

Correctly handles the difference between encoding a parameter value and encoding an entire URL.
UTF-8 aware

International characters, emoji, and symbols are percent-encoded to spec (RFC 3986).
Live two-way conversion

Instant results in both directions — perfect for debugging redirects and callback URLs.
Runs fully client-side

URLs with tokens or session IDs never leave your machine.
Whitespace and plus handling

Understands the difference between %20 and + so form-encoded data decodes correctly.

Frequently Asked Questions

What is percent-encoding (URL encoding)?

Percent-encoding replaces unsafe characters in URLs with a % followed by their hexadecimal byte value — for example, a space becomes %20. It ensures URLs remain valid and unambiguous across browsers and servers.

When should I use encodeURIComponent vs encodeURI?

Use component encoding for individual values placed inside a query string (it encodes &, =, ?, /). Use full-URI encoding when you want to sanitize a complete URL while keeping its structure intact.

Why does my URL contain %2520?

That is double encoding — a %20 that was encoded again (% became %25). Decode the string twice with this tool to recover the original text, and fix the code that encodes it twice.

How are spaces encoded in URLs?

In URL paths and modern query strings a space is %20. In legacy application/x-www-form-urlencoded form data, a space may appear as +. This tool handles both conventions.

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URL Encoder / Decoder

URL Encoder and Decoder — Percent-Encoding Made Easy

How to URL-Encode or Decode a String

Paste your text or URL

Pick encode or decode

Choose component or full URL mode

Copy the result

Features of the URL Encoder / Decoder

Component and full-URI modes

UTF-8 aware

Live two-way conversion

Runs fully client-side

Whitespace and plus handling

Frequently Asked Questions