URL Encoder / Decoder – Encode & Decode URLs Instantly

Encode special characters into percent-encoded URL-safe strings, or decode them back to readable text. Supports both encodeURIComponent and full URL encoding — all processed in your browser.

Input

Result

Encoded or decoded result will appear here.

Why Use Tools Oasis URL Encoder / Decoder?

Tools Oasis makes URL encoding and decoding effortless. Whether you're building API query strings, debugging URLs, or handling special characters in web development — this tool does it instantly, privately, and for free.

  • Instant Encoding & Decoding: Convert between plain text and percent-encoded URLs in one click.
  • 100% Private: All processing happens client-side in your browser. No data is ever sent to a server.
  • Two Encoding Modes: Choose between encodeURIComponent (for query parameters) and encodeURI (for full URLs).
  • Auto-Detect: Not sure if your string is encoded? The auto-detect feature figures it out for you.

Need to generate hashes? Try the Hash Generator. Working with Base64? Use the Base64 Encoder or Base64 Decoder. Need strong passwords? Check out the Password Generator.

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Related Tools You Might Need

Base64 Encoder → Base64 Decoder → HTML Translator → Hash Generator →

Frequently Asked Questions

What is URL encoding?

URL encoding (also called percent-encoding) replaces unsafe or reserved characters in a URL with a percent sign (%) followed by two hexadecimal digits. This ensures URLs are transmitted correctly across the internet, since certain characters like spaces, ampersands, and special symbols have special meanings in URLs.

Why do URLs need to be encoded?

URLs can only contain a limited set of ASCII characters. Special characters like spaces, quotes, angle brackets, and non-ASCII characters must be encoded to be safely included in a URL. Without encoding, these characters could break the URL structure or be misinterpreted by browsers and servers.

What does %20 mean in a URL?

%20 is the URL-encoded representation of a space character. When you see %20 in a URL, it means there is a space at that position. Other common encodings include %26 for ampersand (&), %3D for equals (=), and %2F for forward slash (/).

Is URL encoding reversible?

Yes. URL encoding is fully reversible. You can decode any percent-encoded string back to its original text using the Decode button on this tool. The Auto-Detect feature can also automatically determine whether your input needs encoding or decoding.

Is this URL encoder/decoder free and private?

Yes. Tools Oasis URL Encoder/Decoder is 100% free with no signup required. All encoding and decoding happens locally in your browser — no data is sent to any server, stored, or tracked.