Free Online Base64 Encoder and Decoder
Encode text to Base64 or decode Base64 strings back to plain text with HubKit's Base64 tool. Base64 encoding is commonly used for embedding data in HTML, CSS, email attachments (MIME), data URIs, API authentication headers, and transferring binary data in JSON.
How to Use
Paste your text or Base64 string into the input pane. Select Encode to convert plain text to Base64, or Decode to convert Base64 back to text. The output updates in real time as you type.
Features
- Encode plain text to Base64 format
- Decode Base64 strings to readable text
- Supports UTF-8 text encoding
- Instant conversion with no server calls
Frequently Asked Questions
What is Base64 encoding used for?
Base64 encodes binary data as ASCII text. It is used in data URIs, email attachments, API authentication headers (Basic Auth), embedding images in CSS, and transmitting binary data in JSON or XML.
Is Base64 encoding the same as encryption?
No. Base64 is an encoding scheme, not encryption. It does not provide security — anyone can decode a Base64 string. Use proper encryption (AES, RSA) for sensitive data.
Can I encode files with this tool?
This tool encodes text strings. For encoding image files to Base64, use the Base64 Image tool available on HubKit.