Base64 Encoder & Decoder
Encode and decode Base64 strings instantly. File upload, URL-safe mode, real-time preview, copy & download. 100% private — runs in your browser.
🔒 Data stays on device
⚡ Real-time encoding
📁 File upload support
🆓 Free forever
🔒 Encode to Base64
ENCODE
0 characters · 0 bytes
Upload file to encode
Max 5 MB · Any file type
🔓 Decode from Base64
DECODE
0 characters · 0 bytes
💡 Tip: Base64 is widely used to encode binary data, images, and files for safe transmission over text-based protocols like email, JSON, and XML.
How to Use Base64 Encoder / Decoder
1
Enter Text
Type or paste your text in the left panel, or upload a file
2
Click Encode
Hit the Encode button — the Base64 result appears in the same panel
3
Copy or Save
Copy to clipboard or download as a text file instantly
4
Decode
Paste any Base64 string in the right panel and hit Decode
🔒
100% Private
All processing happens in your browser. Your data never leaves your device.
⚡
Real-time Mode
Enable auto-encode to instantly see Base64 output as you type
📁
File Upload
Encode any file up to 5 MB — images, PDFs, documents, anything
🔗
URL-safe Mode
Generate URL-friendly Base64 for use in web addresses and APIs
📊
Char Counter
Live character and byte count so you always know your string length
📋
One-click Copy
Click Copy — button shows "Copied!" confirmation instantly
Frequently Asked Questions
Common questions about Base64 encoding
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