SmartConverter logoSmartConverter
Text → PDFPDF → TextPDF → WordDOC → PDFHTML → PDFPDF MergePDF SplitPDF Compress ⭐PDF RotatePDF → Image
Image → PDFImage → Text (OCR)Image Compress ⭐Resize ImageJPG ↔ PNGJPG → PNGPNG → JPGPNG → WebPSVG → PNGImage → SVGQR Code Generator
JSON FormatterBase64 Encode/Decode
Blog
SmartConverter logoSmartConverter

Fast, private, and 100% free online file converter. Runs entirely in your browser with WebAssembly — no uploads, no servers, zero data stored.

100% Client-Side Privacy

PDF Tools

  • PDF Compress
  • PDF to Word
  • PDF Merge
  • PDF Split
  • PDF to Text
  • DOC to PDF
  • PDF Rotate

Image & Dev Tools

  • Image Compress
  • Image to Text (OCR)
  • Image to PDF
  • JPG to PNG
  • PNG to WebP
  • QR Code Generator
  • JSON Formatter
  • Base64 Converter

Resources & Legal

  • All Converter Tools
  • Tips & Guides (Blog)
  • Privacy Policy
  • Terms of Service
  • Contact Us
No server uploads
No account required
No file quotas

© 2026 SmartConverter. All rights reserved.

Engineered for speed, privacy, and accessibility. Completely free forever.

Home/Tools/Base64 Encoder/Decoder
New

Base64 Encoder / Decoder

Encode or decode Base64 strings instantly in your browser. Free, no upload.

Advertisement · Top Banner (Responsive / 728×90)
INPUT
OUTPUT

How to Encode or Decode Base64

1

Enter Text or Base64

Type or paste your input into the source box.

2

Choose Mode

Click Encode to convert to Base64 or Decode to convert back to plain text.

3

Copy Output

Copy the converted string directly to your clipboard.

Why Use SmartConverter for Base64 Encoder/Decoder?

🔤

Two-Way Conversion

Seamlessly switch between encoding text and decoding Base64 strings.

⚡

Real-Time Processing

Instantaneous conversion with zero lag or delay.

🔒

Confidential & Local

Tokens, passwords, and authorization headers never touch a remote server.

📋

One-Click Copy

Fast clipboard integration for streamlined developer workflow.

Frequently Asked Questions

Advertisement · 728×90

Related Tools

JSON Formatter

Format, beautify, minify, and validate JSON instantly in your browser.

QR Code Generator

Generate a custom QR code for any URL or text. Download as crisp PNG instantly.

Text to PDF

Transform plain text or notes into a beautifully formatted, shareable PDF.

HTML to PDF

Render any HTML and CSS code snippet into a pixel-perfect, printable PDF document.

Advertisement · 300×600