Free Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text instantly — 100% free, runs in your browser.
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme that converts data into 64 printable ASCII characters (A-Z, a-z, 0-9, +, /). Developers use Base64 to embed images in CSS data URIs, encode email attachments via MIME, pass binary data in URLs, and create API authentication headers like Basic Auth. The Verified Tools Base64 encoder and decoder supports full UTF-8 text including emojis and non-Latin scripts, converting in real time as you type. All processing happens in your browser — data is never sent to any server, making it safe for encoding API keys and sensitive tokens.
How to Encode or Decode Base64
- Select "Encode" to convert text to Base64, or "Decode" to convert Base64 back to text.
- Type or paste your input — the result appears in real time.
- Click "Copy" to copy the result to your clipboard.
- Use "Swap" to quickly reverse the operation and verify your results.
100% Free — No sign-up, no email, no limits. This tool runs entirely in your browser. Your data never leaves your device.