Professional Base64 Encoder/Decoder — Text & Files
Convert text to Base64 and Base64 back to text instantly. Supports UTF-8, drag & drop any file, and clipboard copy. 100% local processing.
Encode to Base64
Convert text or files to Base64
Decode from Base64
Restore original text
Any File Support
Images, PDFs, documents → Base64
Copy to Clipboard
One-click copy input/output
UTF-8 Support
All languages & symbols
100% Private
No server upload, all local
✨ Why Our Base64 Tool Stands Out
Unlike server‑based tools, our encoder/decoder works entirely inside your browser using native JavaScript APIs. Your data never leaves your device – zero privacy risks. Supports UTF‑8, drag & drop any file, and instant clipboard copy.
- ✅ Zero data transfer – 100% local processing
- ✅ Any file to Base64 – drop images, PDFs, text files, etc.
- ✅ UTF-8 safe – handles emojis, accents, all languages
- ✅ Instant copy – copy encoded/decoded result with one click
📖 How to Use Base64 Encoder/Decoder
Choose Mode
Select Encode or Decode
Enter Data
Paste text OR drop any file
Convert & Copy
Click Convert, copy result, or Download as file
❓ Frequently Asked Questions
💡 Expert Tips for Best Results
Use Encode mode for preparing data for JSON, APIs, or email attachments. Use Decode mode to read Base64-encoded content from data URIs or saved strings. For large files, use the Download button to save the Base64 output as a text file.
- 🎯 Text encoding – perfect for API keys, binary data in JSON
- 📁 File conversion – embed images directly in HTML/CSS using data:image/...;base64,
- 🖥️ Offline first – works without internet after page load
- ⚡ Save as file – Download button saves result as .txt