Online Base64 Codec
Encode and decode Base64 with UTF-8, URL-safe option, and file-to-Base64. 100% private, all processing in your browser
Two-Way Convert
Switch between encode and decode
Privacy First
Your data never leaves your device
UTF-8 Support
Fully supports multilingual characters
File Encoding
Convert any file to a Base64 string
Frequently Asked Questions
Does it support Unicode characters like Chinese?
Yes. The tool processes text with UTF-8 encoding and correctly encodes/decodes Chinese, Japanese, Korean, and other multilingual characters.
Will my data be uploaded to a server?
No. All encoding/decoding is done locally in your browser. Your text and file data never leave your device, fully protecting your privacy.
What is URL-safe Base64?
URL-safe Base64 replaces '+' with '-' and '/' with '_' in standard Base64, and removes '=' padding, making it safe to use in URLs and filenames.
Can I convert any file?
Yes. With the 'File to Base64' feature, you can convert any file type into a Base64 string, commonly used for embedding images, fonts, and more.
Does it support batch processing?
Currently it handles a single text or file at a time. For batch processing, paste text or select files one at a time.
Is this tool free to use?
Completely free. This is a pure frontend online tool - no registration required, no payment needed, just open and use.
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