# URL Encoder / Decoder

> Free URL encoder & decoder. Percent-encode or decode URLs and query strings with encodeURIComponent or encodeURI, and inspect query parameters — instant, no signup.

Encode or decode URLs and query strings instantly with encodeURIComponent or encodeURI, plus a built-in query-string inspector that breaks any URL into a readable parameter table.

- **Live tool:** https://www.toolnova.org/dev-tools/url-encoder-decoder
- **Category:** Developer Tools (https://www.toolnova.org/dev-tools)
- **Price:** Free
- **Requirements:** Runs in a modern web browser · No signup · No install

## What this tool does

- Two-way encode & decode
- encodeURIComponent and encodeURI schemes
- One-click swap between input and output
- Query-string inspector parses params into a table
- Handles spaces, unicode & reserved characters
- Runs locally — nothing is uploaded

## How to use URL Encoder / Decoder

1. **Choose a mode** — Toggle between Encode and Decode, and Component or Full URI.
2. **Paste your text** — Enter a URL or query value into the input box.
3. **Read the output** — The encoded or decoded result updates live — copy it in one click.
4. **Inspect params** — Paste a URL with a query string to see its parameters in a table.

## Common use cases

- Encode a query value with spaces or special characters
- Decode a percent-encoded redirect or callback URL
- Debug UTM and tracking parameters in a link
- Build a safe URL for an API request

## About

### Percent-encoding, done right

Browsers and servers only accept a limited set of characters in a URL, so spaces, ampersands, question marks and unicode must be percent-encoded (%20, %26, and so on). This tool encodes and decodes both full URLs (encodeURI) and individual query values (encodeURIComponent), so you always pick the right escaping for the job — whether you're building a link, debugging a redirect, or reading an OAuth callback.

### Inspect any query string

Paste a full URL and the built-in inspector splits its query string into a clean key/value table, decoding each value so you can read exactly what a link is passing. It's ideal for debugging UTM tags, API requests and tracking parameters. Everything runs in your browser — sensitive tokens and internal URLs never leave your device.

## FAQ

### What is the difference between encodeURI and encodeURIComponent?

encodeURI escapes a full URL but leaves characters like :/?&= intact so the link still works. encodeURIComponent escapes those too, which is what you want when encoding a single query value or path segment.

### How do I decode a percent-encoded URL?

Switch to Decode mode and paste the encoded string — sequences like %20 and %26 are turned back into spaces and ampersands instantly.

### Can it read the parameters in a URL?

Yes. Paste a URL with a query string and the inspector lists every key/value pair in a table, decoding each value so you can read it clearly.

### Is my URL uploaded anywhere?

No. All encoding, decoding and parsing runs in your browser, so tokens and internal URLs are never sent to a server.

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ToolNova — free, privacy-first browser tools. Most tools process data locally on your device. See https://www.toolnova.org/llms.txt for the full directory.