Base64 Encoder / Decoder
Encode text into Base64 or decode Base64 back to readable text. Full UTF-8 support for emoji, Chinese, and any Unicode input. Everything runs in your browser — your data never leaves your device.
How to Encode and Decode Base64 Online
ToolsPix Base64 Encoder / Decoder lets you convert any text to Base64 or decode Base64 strings back to readable text in seconds. There is no software to install, no account to create, and no need to upload files to any server.
Why use ToolsPix Base64 Encoder?
- Free with no size or usage limits
- All processing happens locally in your browser — your data never leaves your device
- Works on Windows, macOS, Linux, iOS, and Android
- Supports the URL-safe variant (
-and_instead of+and/) for JWT tokens and URLs - No watermarks, no registration, and no tracking
Steps to Encode or Decode Base64
Select the mode — Encode or Decode — using the tabs at the top of the tool. Paste or type your input into the left panel. With Auto convert enabled the result appears instantly in the right panel; otherwise click Convert. Copy the output with Copy Result, or use Swap to reverse direction and switch modes automatically. Once the page is loaded, the tool also works completely offline.
FAQ
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data using 64 printable ASCII characters (A-Z, a-z, 0-9, +, /). It is commonly used to safely transmit data in contexts where only text is supported, such as email bodies, URLs, JSON payloads, and data URIs.
Is Base64 encryption?
No. Base64 is encoding, not encryption. Anyone can decode a Base64 string back to its original content without a key. Do not use Base64 to protect passwords or sensitive data — use proper encryption or hashing instead.
Does this tool upload my data to a server?
No. All encoding and decoding happens entirely in your browser using native JavaScript. Your input never leaves your device.
Can this tool handle Unicode characters like emoji or Chinese text?
Yes. The tool uses UTF-8 encoding before converting to Base64, so it correctly handles emoji, Chinese, Japanese, Arabic, and any other Unicode text.
Why am I getting a decode error?
Decode errors usually mean the input contains characters that are not valid Base64 (outside A-Z, a-z, 0-9, +, /, =), incorrect padding, or the string was encoded with a URL-safe variant. Check that you pasted the full string correctly.