Image to Base64
Convert images to Base64 encoded strings for embedding in HTML and CSS.
Drag & drop an image or
PNG, JPG, GIF, WebP, SVG · Max 10 MB
Original Size
Base64 Size
Size Increase
Common Uses
- • Embed images directly in HTML without external files
- • Use in CSS
background-image: url("data:...") - • Send images in JSON APIs without file uploads
- • Email templates with inline images
How It Works
Upload an image file (PNG, JPG, GIF, WebP, SVG) and get the Base64 encoded string instantly. Copy the data URI for use in HTML img src or CSS background-image.
**Image to Base64 Converter — Embed Images Directly in Code**
Base64 encoding converts binary image data into a text string that can be embedded directly in HTML, CSS, JSON, or XML files. This eliminates the need for separate image requests, which can improve performance for small images.
**What is Base64?**
Base64 is a binary-to-text encoding scheme that represents binary data using 64 printable ASCII characters (A–Z, a–z, 0–9, +, /). The name comes from the 64 characters used. It increases data size by approximately 33% but makes binary data safe for text-based transport.
**Output Formats**
- **Pure Base64 string** — Just the encoded data
- **Data URI** — Complete `data:image/png;base64,...` format for HTML src attributes
- **CSS background** — `url('data:image/png;base64,...')` format for CSS
- **HTML img tag** — Complete `<img src="data:..." />` element ready to paste
**When to Use Base64 Images**
*Good use cases:*
- Small icons and logos (< 5KB) to reduce HTTP requests
- Inline images in email templates (some clients block external images)
- Single-file HTML documents that must be self-contained
- CSS sprites for small repeated icons
*Bad use cases:*
- Large images (Base64 is 33% larger + no browser caching)
- Images used across multiple pages (each page embeds its own copy)
**Supported Formats**
PNG, JPG/JPEG, GIF, WebP, SVG, BMP, ICO, TIFF
**Privacy**
Image processing happens entirely in your browser using the FileReader API. Your images are never uploaded to our servers.