Base64 Encoder Decoder

Base64 Encoder Decoder converts text and file content into Base64 and back again for common web development and API tasks. It is useful for data URIs, payload inspection, transport-safe embedding, and diagnostics. Encode and decode modes are instant, with output character count helping users understand payload growth. Drag-and-drop file support makes quick binary-to-Base64 conversion possible without external tools. The entire flow remains client-side for privacy and speed.

Key Features

• Encode and Decode Modes

  Switch between human-readable text and Base64 representations quickly.

• File-to-Base64 Support

  Drag or browse files and convert binary content into Base64 text output.

• Character Counters

  Track input and output lengths to estimate transmission overhead.

• Copy Output

  Copy converted payload directly for API requests, HTML embeds, or debug notes.

• Error Handling

  Decode mode reports invalid Base64 strings clearly for faster troubleshooting.

• Offline First Behavior

  Core conversion works in browser without backend dependency.

1. 1

   Select mode

   Choose Encode for plain text to Base64 or Decode for Base64 to text.

2. 2

   Enter text or drop a file

   Use input area for text or drag-and-drop for file-based conversion.

3. 3

   Read output panel

   Converted output appears in the output box immediately.

4. 4

   Check character lengths

   Review input/output counts to understand size expansion.

5. 5

   Copy result

   Use copy action to place output into your target workflow.

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