Free Base64 Encoder & Decoder
Free Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to text instantly. Safe, fast, and 100% private — nothing leaves your browser.
🔄 Base64 Converter
What Is Base64?
Base64 is a binary-to-text encoding method that converts data into a string of ASCII characters. It is commonly used to send images, files, and other binary data safely over text-based protocols such as email, HTML, JSON, and URLs.
Why Use Our Base64 Encoder?
Our Base64 tool runs entirely in your browser using JavaScript’s native encoding functions. That means your data is never sent to any server — it is 100% private, fast, and free. It also supports Unicode characters (emoji, accents, etc.) with proper UTF-8 handling.
Key Benefits
- ✅ Encode & Decode — both in one tool
- ✅ Unicode safe — supports emoji and accents
- ✅ Instant results — one-click conversion
- ✅ Swap button — reverse input/output fast
- ✅ 100% private — nothing leaves your browser
- ✅ Copy output — one-click clipboard copy
How to Use the Base64 Tool
- Select Encode or Decode mode.
- Paste your text or Base64 string.
- Click ⚡ Convert.
- Copy the output with the 📋 Copy button.
Perfect For:
Developers
API data and tokens.
Security
Encode config strings.
Attach binary data safely.
Web
Embed images in HTML/CSS.
Common Base64 Examples
❓ Frequently Asked Questions
Is this Base64 tool free?
Yes, our Base64 encoder and decoder is 100% free with no signup, no download, and no limits.
Is Base64 encryption?
No. Base64 is encoding, not encryption. It is easily reversible and offers no security. Never use Base64 to protect passwords or secrets.
Does it support Unicode and emoji?
Yes. Our tool uses UTF-8 encoding internally, so it correctly handles accents, emoji, and other Unicode characters.
Is my data sent to a server?
No. Everything runs in your browser using JavaScript. Your data is never uploaded or stored anywhere.
Why do some Base64 strings end with “=”?
The “=” signs are padding characters. Base64 works in groups of 4 characters, and padding ensures the output length is a multiple of 4.
Does it work on mobile?
Absolutely. The Base64 tool is fully responsive and works on phones, tablets, and desktops.
