Base64 String & File Converter Console

A versatile Base64 encoding and decoding tool operating 100% in your browser. Encode plain text into Base64, decode Base64 strings back to readable UTF-8 text, or upload images and documents to generate ready-to-use HTML/CSS Data URIs.

🔒100% In-Browser Privacy • Zero Server Storage

URL-Safe Base64 (replace +/ with -_)

Input (Plain Text)36 chars

Output (Base64 Result)0 chars

📖 How to Use Base64 String & File Converter

Select Mode

Choose Text Encode/Decode or File-to-Base64 mode.

Enter Input

Paste text or upload your image or document.

Copy Base64

Copy the encoded/decoded string or CSS Data URI.

✨ Key Capabilities

✓Dual operation tabs: Encode mode and Decode mode
✓Text codec with UTF-8 encoding support
✓File to Base64 Data URI generator (PNG, JPG, SVG, PDF, etc.)
✓Direct image preview for decoded data URIs
✓One-click copy and file download

FAQS

Frequently Asked Questions

Common questions about Base64 String & File Converter and client-side processing.

❓ Does this work with binary files?

Yes, you can upload images, PDFs, or icons to get data URIs for embedding in CSS or HTML.

❓ Is my data secure?

Yes, encoding is performed locally using the browser window.btoa and FileReader APIs with zero server transmission.

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