Base64 File Decoder
Convert Base64 encoded files back to their original format. Download decoded files instantly.
Base64 Input
0 characters
Secure Decoding
Your Base64 data is decoded locally in your browser. No data is sent to our servers.
Instant Download
Download decoded files immediately with your chosen filename and type.
Format Detection
Automatic file type detection with manual override options for precise control.
Common Use Cases
Email Attachments
Extract files that were encoded for email transmission.
Content-Transfer-Encoding: base64
Content-Type: application/pdf
Data Recovery
Recover original files from Base64 encoded backups or logs.
const fileData = atob(encodedBackup);