Encode text or files to Base64, or decode Base64 back to plain text. All processing in your browser.
🔒 Runs entirely in your browser — nothing is sent to any server
Input
Output
📁 Drop any file here, or click to select
Converts file to Base64 data URI — ready to embed in HTML, CSS, or JSON
When to use this
🔐
Decode API credentialsAPIs using Basic Auth send credentials as Authorization: Basic dXNlcjpwYXNz. Decode that string to reveal the username and password.
🪙
Inspect JWT tokensTokens starting with eyJ are Base64. Decode the middle section to read the user data and claims inside.
🖼️
Embed images inlineUse File mode to convert an icon to a data:image/png;base64,… URI — paste directly into HTML or CSS, no file needed.
⚙️
Read config secretsKubernetes secrets, CI/CD vars, and SSH keys are stored as Base64. Decode to see the actual certificate or token.
💡 Tip: Tokens starting with eyJ are always Base64. That's the encoded {" that begins every JWT header.