Image Preview
Base64 image viewer online. Paste Base64 image data and preview instantly. Supports PNG, JPG, WebP, GIF—decode and view Base64 images free.
Base64 Image Data
Preview
Paste Base64 image data to see preview
Supported Formats
Features
- Instant Base64 image preview
- Support for PNG, JPG, GIF, WebP, SVG
- Display image dimensions and file size
- Detect and show MIME type
- Download decoded image
- Validate Base64 image data
Common Use Cases
- Preview data URI images before embedding
- Verify Base64 images from API responses
- Debug email template images
- Convert Base64 back to downloadable images
- Extract images from JSON/XML data
Base64 Image Decoding and Preview
Base64 image preview decodes Base64-encoded image data and renders it visually in your browser. This is useful for verifying images embedded in code, APIs, or databases.
Supported formats:
- PNG - Lossless compression, supports transparency
- JPEG/JPG - Lossy compression, smaller file sizes
- GIF - Animations and transparency
- WebP - Modern format, excellent compression
- SVG - Vector graphics, scalable without quality loss
Data URI format: Base64 images in HTML use the format data:image/png;base64,iVBORw0KG.... You can paste either just the Base64 string or the full data URI.
Use cases: Debugging embedded images, extracting images from JSON APIs, verifying image data before using it in production code.
Examples
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUA...
// Decodes to a 5x5px PNG image/9j/4AAQSkZJRgABAQEAYABgAAD/2wBDAAIBAQE...
// JPEG image, missing "data:image/jpeg;base64," prefix
// Tool auto-detects and adds itdata:image/png;base64,NotValidBase64!!!
// Invalid characters, cannot decodeFrequently Asked Questions
If the Base64 string includes the data URI prefix (data:image/png;base64,...), the MIME type is between data: and ;base64. Our tool automatically detects it. If there's no prefix, the tool attempts to identify the format by inspecting the binary header (magic bytes).
Yes! Once the Base64 image is decoded and displayed, you can right-click the preview and select "Save Image As..." to download it. Some tools also provide a dedicated "Download" button that saves the image with the correct file extension.
Common issues: (1) Invalid Base64 characters, (2) incorrect padding (missing =), (3) wrong MIME type prefix, or (4) corrupted binary data. Use our Validator tool to check if the Base64 string is properly formatted.
Base64 images embedded in HTML/CSS load faster initially (no separate HTTP request) but increase page size by ~33%. For many small images, this eliminates connection overhead. For large images, traditional <img src="url"> with caching is more efficient.
Yes! SVG (Scalable Vector Graphics) can be Base64-encoded and previewed. The data URI format is data:image/svg+xml;base64,.... SVGs remain vector-based even when Base64-encoded, so they scale without quality loss.