Repair Malformed Base64

Fix corrupted Base64 strings automatically. This tool detects and corrects common encoding issues, padding problems, and formatting errors in your Base64 data.

Base64 Repair Tool

Paste your malformed Base64 string below and get an instant repair

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Automatic Detection

Identifies common Base64 issues including missing padding, invalid characters, and formatting problems.

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Smart Repair

Fixes whitespace issues, converts URL-safe variants, removes invalid characters, and corrects padding.

Instant Results

Get repaired Base64 strings immediately with detailed status reports on all applied fixes.