Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 to text
Enter text above to encode or decode
Advanced Options
Input Validation
Enter some text to see validation results
Encoding History
No encoding history yet. Start encoding/decoding to build your history!
How to encode and decode Base64 online?
Encode and decode Base64 strings instantly with our secure, browser-based tool. Whether you're working with data transmission, file encoding, or API authentication, our Base64 encoder/decoder provides fast, reliable conversion with support for various input formats and real-time validation.
Features
- Encode/decode strings and files
- Supports UTF‑8 and binary data
- Instant results with large input support
- Copy/download output
How to use
- Paste text or select a file.
- Choose Encode or Decode.
- Copy or download the result.
Tips & Best Practices
- Always validate your data before processing to catch syntax errors early.
- Use the copy button to quickly transfer formatted output to your clipboard.
- For large files, consider breaking them into smaller chunks for better performance.
- Back up your original data before applying any transformations.
- Use keyboard shortcuts for faster workflow: Ctrl+A to select all, Ctrl+C to copy.
FAQ
Is Base64 encryption?
No. Base64 is an encoding, not encryption. The tool supports common encoding and decoding standards, ensuring compatibility with a wide range of applications and workflows.
Max file size?
Large files work in most modern browsers; memory constraints may apply. or external dependencies.
Is this tool free to use?
Yes, this tool is completely free with no registration required. There are no usage limits, no premium tiers, and no hidden costs. You can use it as many times as you need.
Is my data safe and private?
Absolutely. All processing happens locally in your browser. No data is ever sent to our servers or any third party. Your input never leaves your device, making it completely safe for sensitive information.
Does this tool work offline?
Once the page is loaded, the tool works entirely in your browser without requiring an internet connection. All processing is done client-side using JavaScript, so you can use it even when offline.