Repair Malformed Base64

Malformed Base64 Input
Repaired Base64 Output
Information

What is Base64 Repair?

Base64 repair tools fix common issues in malformed Base64 strings such as missing padding,invalid characters, incorrect spacing, and formatting problems.

Our repair tool fixes:

  • Missing padding (= characters)
  • Invalid characters (non-Base64 characters)
  • Whitespace and line breaks
  • URL-safe variants (- and _ characters)
  • Incomplete padding sequences
Base64 Repair

Common Base64 Issues

Base64 strings can become malformed due to various reasons:

  • Missing Padding: Strings that don't end with proper = padding
  • Invalid Characters: Non-Base64 characters mixed in the string
  • Whitespace: Spaces, tabs, or newlines within the string
  • URL-Safe Format: Using - and _ instead of + and /
  • Truncated Data: Incomplete or cut-off strings

How to Use the Base64 Repair Tool

  1. Input: Paste your malformed Base64 string
  2. Repair: Click "Repair Base64" to fix common issues
  3. Review: Check the repair status and applied fixes
  4. Copy: Use "Copy Repaired" to get the fixed string

The tool attempts to repair common Base64 formatting issues automatically.