How to Use Base64 Encoder & Decoder
Process your files in seconds. Everything runs directly inside your web browser with zero software installation or account setup required.
Select Encode or Decode Mode
Choose Encode to turn text or files into Base64, or Decode to extract raw strings and files.
Enter Text or Upload File
Paste string content into the text editor or upload small images, icons, or binary documents.
Configure Data URI Format
Optionally format output as ready-to-use `data:image/png;base64,...` strings for inline web assets.
Copy or Download File
Copy encoded Base64 strings to clipboard or download decoded binary assets directly.
Why Choose ToolLab's Base64 Encoder & Decoder?
Engineered for extreme speed, strict privacy, and maximum accuracy. Experience a modern browser utility built with high standards.
Text & Binary File Support
Encode UTF-8 strings or convert small PNG/SVG images into inline Base64 data strings.
URL-Safe Base64 Mode
Optionally replaces `+` and `/` characters with URL-safe alternatives for query string safety.
Full Unicode & Emoji Compliant
Accurately encodes multi-byte UTF-8 character sets, emojis, and international alphabets without corruption.
Data URI Generator
Generates HTML `<img src="...">` ready data strings with automatic MIME type headers.
100% In-Browser Security
Your secret API tokens, passwords, and code are converted locally with zero network transmission.
Instant One-Click Copy
Copy multi-thousand-character encoded strings effortlessly with visual confirmation.
Frequently Asked Questions
Everything you need to know about using Base64 Encoder & Decoder, security protocols, and supported formats.
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