Base64 Decoder

Developer Tool Featured

Decode Base64 strings to text, files, and images instantly. Supports multiple output formats and decoding options. Perfect for data analysis and debugging.

Base64 Input

0 characters

Upload Base64 File

Drag & drop Base64 files here

or

Supports .txt, .base64, and other text files up to 10MB

Output Options

Decoded Output

Enter a Base64 string to decode

Common Base64 Formats

Standard
Uses A-Z, a-z, 0-9, +, /, =
URL-safe
Replaces + with -, / with _
MIME
Uses line breaks every 76 chars

Detection Tips

  • Text data often starts with common prefixes
  • Images have specific byte signatures
  • JSON/XML have structured patterns
  • Binary files have random byte distribution

Features

  • Auto-detect content type
  • Multiple output formats
  • Image preview support
  • Detailed analysis