Encoder/Decoder

They serve different purposes. Base64 converts binary data or text into a safe text form made of letters and numbers, often to prevent data loss during transfer. URL encoding converts spaces and special characters into safe address-bar forms such as %20. HTML entity encoding prevents symbols such as < and > from being interpreted as HTML tags by the browser.

No. All encoding and decoding are processed 100% locally in your web browser. You can safely transform sensitive keys, tokens, or personal information without sending it outside your device.

Decoding means converting data that has already been encoded back into its original readable text. Select the encoding type first, then click the decode button.

When URL mode is selected and you enter a long URL, the tool automatically separates parameters after the question mark, such as ?name=yioo&category=tools, into Key and Value columns. This makes complex URL parameters easier to inspect.

Use it to convert Base64, URL encoding, and HTML entities, or to inspect URL query parameters quickly.