What is Base64 Repair Tool?
Base64 Repair Tool attempts to fix malformed Base64 strings by removing invalid characters and correcting '=' padding.
How to use Base64 Repair Tool
Paste a broken Base64 string and click Repair to output fixed Base64 data.
Key features
- Repairs Base64 padding and strips invalid characters
- 100% client-side operation
Common use cases
- Fixing corrupted Base64 payload strings
Technical details & standards
Sanitizes character alphabet and computes correct padding client-side.
Frequently asked questions
Can all Base64 strings be repaired?
It repairs formatting and padding flaws; missing data bytes cannot be recovered.
Is my data safe?
All processing happens entirely in your browser. Your data never leaves your device and is never sent to or stored on a server.
Does it work offline?
Yes. Once the page has loaded, most tools keep working without an internet connection.