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How to Convert Base64 to File - Step by Step Guide

Step 1

Paste Your Base64 String

Start by pasting your Base64 encoded file data into the input editor. The tool works with any file type encoded in Base64 format.

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Universal support: PDF, ZIP, DOCX, XLSX, images, and more
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Auto-detection: Automatically identifies file type from Base64 data
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Try sample: Click "Sample" to test with example data
Step 2

Automatic File Detection

The tool automatically decodes your Base64 string and identifies the file type by analyzing the binary signature. You'll see the file type, size, and format instantly.

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Smart detection: Identifies PDF, images, Office docs, archives automatically
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File info: Shows file type, size, and suggested extension
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Instant validation: Checks if Base64 data is valid
Step 3

Download Your File

Once decoded, enter a custom filename if desired and click "Download" to save the file to your computer. The file is ready to use with the appropriate file extension.

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API responses: Decode files from API calls
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Database exports: Extract files stored as Base64 in databases
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Email attachments: Decode Base64 file attachments

Frequently Asked Questions

How do I convert Base64 to a file?

Simply paste your Base64 encoded string into the input. The tool automatically detects the file type and decodes it. Click download to save the file. For the reverse process, use the File to Base64 encoder.

What file types are supported?

The tool supports all file types including PDF, Word documents, Excel spreadsheets, PowerPoint, ZIP archives, images (PNG, JPEG, GIF), CSV, JSON, XML, and plain text files.

How does file type detection work?

The tool analyzes the binary signature (magic bytes) at the start of the decoded data to identify the file type. This ensures accurate file extension and MIME type detection for proper file handling.

Is my data secure during conversion?

Absolutely! All Base64 to file conversion happens entirely in your browser using client-side JavaScript. Your data is never uploaded to any server, ensuring complete privacy.

Is this Base64 to File converter free?

Yes, completely free with no file size limits, no registration required, and unlimited conversions with full privacy protection.

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