🔐 Base64 Encoder & Decoder

Convert text to Base64 and decode Base64 strings instantly. 100% browser-based and secure.

Encode or decode Base64 in seconds

Why developers choose ToolsKit247

  • Client-side processing keeps data private
  • UTF-8 & Unicode support for every language
  • No length limits or throttling
  • Mobile-friendly responsive layout

Switch to Vietnamese

Need the tool in Vietnamese? Use the localized version.

Mở bản Tiếng Việt

Highlights

  • Real-time encoding and decoding with zero latency.
  • No server storage — everything happens locally.
  • Handles multilingual content and special characters.
  • Optimized for desktop, tablet, and phones.

Use cases

  • Embed Base64 assets in HTML or CSS.
  • Send binary data through JSON APIs.
  • Decode Base64 email content or attachments.
  • Convert data for mobile or IoT applications.

How to use

  1. Pick the Encode or Decode tab.
  2. Paste your text or Base64 string into the input box.
  3. Click the button to process the data instantly.
  4. Copy the result with one tap and reuse it anywhere.

FAQ

No. All encoding and decoding happens in your browser, so nothing leaves your device.

The tool does not impose limits. Extremely large strings may be limited by your browser memory.

Base64 encoding safely transmits binary data through text-based channels like JSON, XML, and email.