▚ sandboxmax

Text to Base64 Encoder

Pre-loaded with a config payload of the kind that ends up Base64-encoded in environment variables, Kubernetes secrets, and HTTP basic-auth headers. Encoding is UTF-8 safe — accents and emojis won't corrupt — and happens on every keystroke, entirely in your browser.

runs 100% in your browser — text & files never uploaded

  1. 1Pick mode & directionText Mode for strings, File Mode for images and small files; encode or decode.
  2. 2Paste or dropConversion runs on every keystroke — UTF-8, URL-safe Base64, and data: URLs all handled.
  3. 3Copy or previewGrab the result with one click; decoded images render live in the preview sandbox.

Encoded and decoded with your browser’s native btoa/atoband FileReader — text and files never leave this tab.

More Base64 tools

/base64/decode-base64-to-string

Base64 to String Decoder

/base64/convert-image-to-data-url

Image to Data URL Converter

Is it safe to paste sensitive data into the Text to Base64 Encoder?

Yes. The Text to Base64 Encoder runs 100% client-side inside your browser thread — nothing you paste is uploaded, logged, or transmitted. SandboxMax is a static site with no backend server, no cookies, and no trackers: open your browser's network panel while you work and you'll see zero requests leave the tab.