How to use the Base64 Encoder
- Enter or paste your input in the tool above.
- Choose the available options and select Run tool or Process locally.
- Review, copy, or download the generated result.
What does the Base64 Encoder do?
Base64 represents binary bytes with printable ASCII characters. It is commonly used in data URLs, email formats, and text-based protocols, but it adds size and provides no secrecy.
Common uses
- Encode text for a data field or test fixture
- Create interoperable UTF-8 Base64 values
- Debug Base64 input expected by an API
Base64 Encoder example
Example input
Hello, developer 👋Example output
SGVsbG8sIGRldmVsb3BlciDwn5GLLimitations and important notes
- Base64 is encoding, not encryption
- Output is roughly one-third larger than source bytes
- Different text encodings produce different byte sequences
Private browser-based processing
Your data is processed locally in your browser and is not uploaded or stored on our servers. Tool inputs are not saved to local storage.
Base64 Encoder features
- Free to use with no registration
- Fast client-side processing
- Clear validation and useful error messages
- Copy and download support
- Mobile-friendly accessible interface
Frequently asked questions
Can Base64 protect a password?
No. Anyone can decode Base64. Use an appropriate password hashing algorithm for stored passwords.
Does this encoder support Unicode?
Yes. Text is converted to UTF-8 bytes before Base64 encoding.
Is the Base64 Encoder free to use?
Yes. The Base64 Encoder is completely free and requires no account or installation.
Is my data uploaded when using Base64 Encoder?
No. Your input and result are processed locally inside your browser and are not sent to our server.
Can I use Base64 Encoder on mobile?
Yes. The tool works in modern desktop and mobile browsers.