Home Categories Image Image to Base64 Converter

Image to Base64 Converter

Convert any image to Base64 encoded string instantly. Perfect for embedding images in HTML, CSS, JSON, and API requests.

Images ()

💡 How to Use This Tool

Convert your images to Base64 encoded strings in seconds. Follow these simple steps:

1

Choose Output Format

Select the format you need — Data URI, raw Base64, HTML img tag, CSS url(), or JSON.

2

Upload Your Images

Click to browse or drag and drop one or more image files of any format.

3

Preview Output

The Base64 output is generated instantly and displayed in the preview area.

4

Copy & Use

Click "Copy" to copy the output to your clipboard and paste it into your project.

📖 About Image to Base64 Converter

What is Image to Base64 Converter?

Image to Base64 Converter is a free online tool that transforms any image into a Base64 encoded string. This allows you to embed images directly into HTML, CSS, JSON files, or API requests without needing separate image files.

Common Use Cases

  • Email Templates: Embed images directly in HTML emails without external dependencies.
  • API Development: Include images in JSON payloads for testing and data transfer.
  • CSS Backgrounds: Use Base64 images directly in stylesheets for small icons and backgrounds.
  • Single-File HTML: Create self-contained HTML documents with embedded images.
  • Data URIs: Generate data URIs for inline image display without HTTP requests.
  • Configuration Files: Store small images in configuration files or databases.

Key Features

Universal Format Support

Supports all major image formats including PNG, JPG/JPEG, WebP, GIF, BMP, SVG, AVIF, and ICO.

Multiple Output Formats

Get Base64 output in different formats: raw Base64, Data URI (with MIME type prefix), CSS url(), and more.

Batch Conversion

Convert multiple images at once and copy each result individually.

File Size Display

See the original file size and the Base64 string length to understand the data overhead.

Copy to Clipboard

One-click copy functionality for quick use in your projects.

Privacy & Security

All image processing happens entirely in your browser using the FileReader API. Your images are never uploaded to any server — they stay completely private on your device.

Technical Details

Base64 encoding increases the data size by approximately 33% compared to the original binary. This is because Base64 uses 6 bits per character to represent 8-bit binary data. For large images, consider whether embedding is appropriate or if a traditional file reference would be more efficient.

❓ Frequently Asked Questions

Yes! All image processing happens locally in your browser using the FileReader API. Your images are never uploaded to any server and remain completely private on your device.
You can upload images in any format supported by your browser, including PNG, JPG/JPEG, WebP, GIF, BMP, SVG, AVIF, ICO, and TIFF.
Base64 is a binary-to-text encoding scheme that converts binary data (like images) into ASCII characters. This allows images to be embedded directly in HTML, CSS, JSON, or other text-based formats.
A Data URI is a string that includes the MIME type and Base64 data, formatted as "data:[mime-type];base64,[data]". This can be used directly in HTML img src attributes or CSS url() functions.
Yes, Base64 encoding increases the data size by approximately 33%. This is because Base64 uses 6 bits per character to represent 8-bit binary data. For large images, consider whether embedding is appropriate.
Yes! You can upload and convert multiple images in a single batch. Each image is processed independently and you can copy each result individually.

Version History

1.0.0

Initial release

Feb 16, 2026