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How to Convert File to Base64 - Step by Step Guide

Step 1

Upload Your File

Start by clicking "Upload File" or drag and drop your file into the upload area. The tool accepts any file type up to 10MB in size.

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Any file type: PDF, DOCX, XLSX, images, ZIP, JSON, XML, and more
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Drag & drop: Simply drag your file into the upload area
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Try sample: Click "Sample" to test with example file
Step 2

Automatic Encoding

The tool instantly converts your file to RFC 4648 compliant Base64 format. You'll see file information and the Base64 encoded string immediately.

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Instant conversion: No waiting or button clicks needed
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File details: Shows file name, type, and size
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Safe encoding: Preserves all file data accurately
Step 3

Copy or Download Base64 String

Perfect! Now you can copy the Base64 encoded string to your clipboard or download it as a text file. The output is ready to use in APIs, databases, and applications.

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API transmission: Send files in JSON payloads
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Database storage: Store files as text in databases
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Email attachments: Embed files in email systems

Frequently Asked Questions

How do I convert a file to Base64?

Simply upload your file using the "Upload File" button or drag and drop it. The tool will instantly convert it to a Base64 string. You can then copy or download the result. To convert back, use the Base64 to File decoder.

What file types can I encode?

The tool supports all file types including PDF, Word documents, Excel spreadsheets, PowerPoint presentations, ZIP archives, images, videos, audio files, text files, and any other file format.

What is the file size limit?

The tool supports files up to 10MB. For larger files, consider splitting them into smaller chunks or compressing them first. Remember that Base64 encoding increases size by about 33%.

Is my file secure during conversion?

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

Is this File to Base64 converter free?

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

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