Base64 Encoder
Quickly encode any text to Base64. All processing happens in your browser.
Encode Text to Base64
Paste or type text below and click Encode to Base64.
How to Use Base64 Encoder
👉 Step-by-step guide
Type or paste your text into the input textarea. Any text including Unicode characters is supported.
Click the "Encode to Base64" button to convert your text to Base64 format.
The Base64 encoded result will appear in the output textarea below.
Click "Copy Result" button to copy the encoded text to your clipboard for use elsewhere.
About Base64 Encoder
Base64 Encoder is a free online tool that allows you to convert text or data into Base64 format. Base64 encoding is a method of converting binary data into a text string, using only readable ASCII characters. It’s commonly used to safely transmit data over media that are designed to handle text, such as JSON, HTML, or email.
This Base64 Encoder uses modern JavaScript only (no external libs). It supports Unicode input and copies results to your clipboard. The encoding happens locally in your browser and nothing is sent to the server.
What Makes Our Base64 Encoder Unique?
- Unicode Support: Properly handles non-ASCII characters and emojis
- Client-side Processing: All encoding happens in your browser for privacy
- Modern Clipboard API: Fast and reliable copying with fallback for older browsers
- Responsive Design: Works perfectly on both desktop and mobile devices
Use Cases for Base64 Encoder Tool
- Data URLs: Create Base64 encoded strings for embedding images in CSS/HTML
- API Development: Encode binary data for transmission in JSON payloads
- Email Attachments: Convert binary files to Base64 for email systems
- Authentication: Prepare credentials for basic authentication headers
Frequently Asked Questions (FAQ)
Base64 is an encoding scheme that converts binary data into ASCII text format by translating it into a radix-64 representation. It's commonly used to send binary data through systems that only reliably handle text.
Base64 is not encryption - it's encoding. Anyone can decode Base64 text, so don't use it to protect sensitive information. For security, use proper encryption methods.
Base64 encoding increases the data size by approximately 33% because it represents 3 bytes of data with 4 Base64 characters.
This tool is designed for text encoding. For files, you may want to use a dedicated file-to-Base64 converter tool that can handle binary data directly.