About This Tool

Encoding and decoding data is essential for security, data transfer, and API work. This free encoder-decoder supports base64, URL encoding, and more. Encode text to base64 (useful for APIs, authentication), decode base64 back to plaintext, URL-encode special characters, and more. All conversion happens instantly in your browser — your data is never sent to a server.

Common Uses

Encode/decode base64 for API authentication
URL-encode special characters for query strings
Debug API requests and responses

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Encoder Decoder.

Switch between Base64 and URL encoding. Encode, decode, copy. Runs entirely in your browser — nothing is ever sent over the network.

Input

Output

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Frequently Asked

Why would I need base64 encoding?: Base64 converts binary or special characters into safe ASCII text. It's used in email (MIME), HTTP auth headers, and data URIs.
Is encoding the same as encryption?: No. Encoding is reversible and not secure. Encryption uses keys and is meant for security. For secrets, use encryption.
What's URL encoding?: URL encoding (percent encoding) converts special characters to %XX format so they're safe in URLs. Example: space → %20.
Is my data stored?: No. All encoding/decoding happens in your browser. Data is never sent to a server.