Quickly encode and decode data in Base64 format. Whether you are handling binary data in text-based protocols or creating Data URIs for images, our tool provides a secure, instant solution.
{} Launch Base64 Tool → ⚡ Instant Conversion • 🔒 100% Private • 🚀 No Data UploadsSeamlessly switch between encoding strings to Base64 and decoding Base64 back to original text with full character support.
Your sensitive data stays on your machine. All processing is done locally in your browser, so your strings never touch a server.
Generate Base64 Data URIs for images and files. Perfect for embedding assets directly into HTML, CSS, or JSON files.
Built for speed. Encode or decode massive blocks of data instantly without lag, even while working offline.
Paste your text string or upload the file you wish to encode or decode.
The tool automatically detects the input type. Toggle between Encode and Decode as needed.
Instantly copy the resulting Base64 string or original text to your clipboard.
Create Data URIs to embed small icons and images directly into stylesheets to reduce HTTP requests.
Quickly decode Base64 encoded Basic Authentication headers or JWT payloads for debugging purposes.
Handle Base64 encoded attachments or content for MIME email generation and troubleshooting.
We value developer privacy. Our Base64 tool runs purely in your browser's RAM; no strings or files are logged or saved.
Base64 is used to encode binary data into a text format (ASCII), making it safe to transport over systems that only handle text.
No. Base64 is an encoding format, not encryption. It is easily reversible and should not be used to hide sensitive information.
The tool can handle very large strings, limited only by your device's browser memory.