Image to Base64 Converter
Convert images to Base64 strings or decode Base64 to preview images. Supports PNG, JPG, GIF, and WebP.
What is Base64 Image Encoding?
Base64 image encoding converts binary image data into a text string using Base64 encoding. This allows images to be embedded directly in HTML, CSS, or JSON without separate file references.
Base64-encoded images are useful for embedding small images in web pages, storing images in databases, and transmitting images through text-based protocols.
Common Use Cases
- Embedding images in HTML/CSS without external files
- Storing images in JSON or databases
- Transmitting images through APIs
- Creating data URIs for inline images
- Optimizing small images for web performance
Frequently Asked Questions
What is Base64 image encoding?
Base64 encoding converts binary image data into ASCII text format using 64 characters (A-Z, a-z, 0-9, +, /). This allows images to be embedded directly in HTML, CSS, JSON, or transmitted through text-based protocols without requiring separate image files.
When should I use Base64 for images?
Use Base64 encoding for small images (icons, logos under 10KB), embedding images in CSS for performance, storing images in JSON/databases, or when you need to include images in API responses. Avoid for large images as Base64 increases file size by approximately 33%.
Is Base64 encoding secure?
Base64 is an encoding method, not encryption. It doesn't provide security - anyone can decode Base64 strings. Don't use Base64 to hide sensitive image data. It's purely for format conversion.
What image formats are supported?
Our tool supports all common web image formats: JPEG/JPG, PNG, GIF, WebP, SVG, BMP, and ICO. The output Base64 string includes the data URI prefix indicating the image format.
Are my images uploaded to your server?
No. All processing happens locally in your browser using JavaScript. Your images never leave your device, ensuring complete privacy and security.
Related Tools
Encode and decode Base64 strings
Format JSON with embedded Base64 images