Base64 Encoder Online
Encode text strings into Base64 format instantly. 100% private and free.
Key Capabilities
What is Base64 encoding?
Base64 converts binary or text data into a 64-character ASCII representation (A-Z, a-z, 0-9, +, /). It's used to safely transmit binary data through text-only channels like email, JSON payloads, HTML data URIs, and HTTP headers.
Who uses this tool professionally?
Developers encode API authentication credentials for HTTP Basic Auth headers. Email system administrators encode attachment data for MIME email formatting. Frontend developers create Base64 data URIs for embedding small images directly in CSS and HTML.
Does it handle binary data?
This tool encodes text strings to Base64. For binary file encoding (images, PDFs), the file should first be read as a binary buffer. The tool handles all UTF-8 text including international characters and special symbols.
Is my data kept private?
Yes. All encoding happens locally in your browser. Sensitive data like passwords and tokens are never transmitted to any server.
Frequently Asked Questions
What is Base64 encoding?
Base64 converts binary or text data into a 64-character ASCII representation (A-Z, a-z, 0-9, +, /). It's used to safely transmit binary data through text-only channels like email, JSON payloads, HTML data URIs, and HTTP headers.
Who uses this tool professionally?
Developers encode API authentication credentials for HTTP Basic Auth headers. Email system administrators encode attachment data for MIME email formatting. Frontend developers create Base64 data URIs for embedding small images directly in CSS and HTML.
Does it handle binary data?
This tool encodes text strings to Base64. For binary file encoding (images, PDFs), the file should first be read as a binary buffer. The tool handles all UTF-8 text including international characters and special symbols.
Is my data kept private?
Yes. All encoding happens locally in your browser. Sensitive data like passwords and tokens are never transmitted to any server.
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