100% Client-Side Privacy

Base64 Encoder / Decoder

Convert text strings to Base64 format or decode Base64 back to original text securely. All processing happens entirely inside your browser. No data is ever sent to any server.

Input

Detecting format...
Drop your text file here
Characters: 0 | Size: 0 B

Output

Result
Characters: 0 | Size: 0 B
❌

Invalid Base64 Input

The supplied text is not a valid Base64 encoded string. Please check the content format and try again.

About Base64 Encoder & Decoder

The TechHost Base64 Encoder & Decoder is a free, fast, and privacy-first online utility. Convert plain text into standard Base64 format, or decode Base64 encoded strings back to clear, readable text in real-time. Because all operations are performed completely client-side in your web browser, your sensitive data is never uploaded to any server or recorded in any log, guaranteeing absolute confidentiality.

How to encode/decode Base64 online

  1. Paste or type your input text into the left editor panel.
  2. Toggle the "Live Conversion" switch for instant, real-time results, or click "Encode" or "Decode" manually.
  3. Verify character counts and data size metrics under the editors.
  4. Click "Copy Output" to save your results to the clipboard, or click "Download Output" to save it as a clean text file.

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