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How to Use

  1. 1

    Enter Text or Upload File

    Type your text in the input field or upload a file using the file upload button. The tool supports various file formats.

  2. 2

    Choose Encoding Direction

    Select "Encode" to convert text/file to Base64, or "Decode" to convert Base64 back to original content.

  3. 3

    Copy Result

    Click the "Copy" button to copy the Base64 result to your clipboard for use in your application or system.

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Frequently Asked Questions

What is Base64 encoding and why do I need it?
Base64 encoding converts binary data into ASCII text format, making it safe for transmission over text-based protocols. It's essential for email attachments, data URLs in web development, API authentication tokens, and storing binary data in databases or JSON files.
Is this Base64 converter safe and secure to use?
Yes, our Base64 converter is completely secure. All encoding and decoding happens directly in your browser (client-side processing) - no data is uploaded to our servers. Your files and text remain private and are never stored or transmitted.
Can I encode large files with this Base64 tool?
Yes, you can encode files of any size. Our tool uses efficient client-side processing to handle large files without server limitations. However, very large files may take longer to process depending on your device's performance.
How do I decode Base64 back to the original file?
Simply paste your Base64 encoded text into the decoder section and click "Decode". The tool will automatically detect the file type and allow you to download the original file. You can also copy the decoded text directly.
What's the difference between regular and URL-safe Base64?
Regular Base64 uses characters +, /, and = which can cause issues in URLs. URL-safe Base64 replaces + with -, / with _, and removes padding (=) characters, making it safe for use in URLs and filenames.
Can I use this tool for API authentication tokens?
Absolutely! Base64 encoding is commonly used for API authentication, especially for Basic Authentication headers. Our tool supports both regular and URL-safe encoding, perfect for different API requirements.
Does this Base64 converter work offline?
Yes, after the initial page load, our Base64 converter works completely offline. All processing happens in your browser, so you can encode and decode data without an internet connection.
How do I encode images to Base64 for CSS or HTML?
Upload your image file using the file upload feature, and the tool will generate the Base64 encoded string. You can then use this in CSS as data:image/[type];base64,[encoded-string] or in HTML img src attributes.
What is URL-safe Base64?
URL-safe Base64 uses different characters (- and _ instead of + and /) to make the encoded string safe for use in URLs without additional encoding.