How It Works
Input
Encode: Drop or select an image file.
Decode: Paste a Base64 string.
Process
The tool verifies the file is a valid image and converts it using the FileReader API
Result
Encode: Copy the Base64 string or data URI.
Decode: Preview and download the image.
Allowed Safe File Types
PNG — Lossless compression, transparency support
JPEG — Lossy compression, photographs
GIF — Animated images, limited color palette
WebP — Modern format, superior compression
BMP — Uncompressed bitmap
SVG — Scalable vector graphics
ICO / TIFF — Icons and high-quality images
Privacy & Security
- 100% client-side — runs entirely in your browser via JavaScript
- Zero network traffic — no API calls, no server requests, no data transmission
- Nothing stored — images are never logged, recorded, or saved
- Works offline — once the page loads, it functions without any internet connection
Common Use Cases
Data URIs — embed images directly in HTML or CSS without external files.
API payloads — encode images for JSON-based API requests.
Email templates — inline images in HTML emails for consistent rendering.
Debugging — decode and preview Base64 image strings from logs or configs.
