Base64 Encoder & Decoder
Convert text payloads to and from Base64 encoding scheme securely on your local device.
About Base64 Encoder & Decoder Free — Convert Text and Binary Online
Encode credentials, token headers, and payload data into standardized Base64 strings, or decode obfuscated data back into clean, readable text.
Key Features & Capabilities
- Encode ASCII and full UTF-8 Unicode strings to Base64
- Decode Base64 payloads into readable text
- URL-safe Base64 encoding variant support
- Real-time instant output as you type
- 100% private on-device execution
How to Encode or Decode Base64
Step 1: Input Text or Base64
Type or paste your input string.
Step 2: Choose Operation
Switch between Encode to Base64 or Decode from Base64.
Step 3: Copy Result
Click Copy to grab your encoded or decoded text.
Frequently Asked Questions
Does this support non-English Unicode characters?
Yes, our encoder properly handles full UTF-8 character sets including emojis and international accents.
Can I convert images to Base64?
For images, use our specialized Image to Base64 tool which generates Data URIs.
Related Utility Tools
Why Zaeyon?
Private, free, and browser-based — no account, no uploads, no compromises.
Zero Uploads
Your files never leave your device. All processing happens locally in your browser memory — nothing is sent to any server.
100% Free Forever
No subscriptions, no hidden fees, no daily limits. Every tool on Zaeyon is permanently free to use without an account.
Instant & Powerful
Powered by WebAssembly — the same low-level technology used in native apps — so processing is fast even for large files.
Works Offline
Once the page loads, the WebAssembly engine runs entirely on your device. No internet connection needed to process files.
Works Everywhere
No software installation required. Runs directly in your browser on Windows, Mac, Linux, iOS, and Android.