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Image to Base64 Converter

Convert images to Base64 encoding with support for various formats and quality settings

Click to upload file or drag and drop file here

Maximum file size: 10MB Supported formats: image/jpeg, image/png, image/webp, image/gif

Key Facts

Category
Design
Input Types
file, select, checkbox, number
Output Type
text
Sample Coverage
4
API Ready
Yes

Overview

The Image to Base64 Converter allows you to quickly transform image files into Base64 encoded strings, making it easy to embed graphics directly into your HTML, CSS, or JSON files without external dependencies.

When to Use

  • •Embedding small icons or logos directly into your CSS or HTML to reduce HTTP requests.
  • •Storing image data within a database or JSON configuration file.
  • •Preparing image assets for transmission via APIs that require text-based data formats.

How It Works

  • •Upload your image file (JPEG, PNG, WebP, or GIF) using the file selector.
  • •Adjust optional settings like output format, dimensions, or the inclusion of the Data URI prefix.
  • •Click convert to generate the Base64 string, which you can then copy directly to your clipboard.

Use Cases

Optimizing web performance by inlining critical small images.
Generating base64 strings for CSS background-image properties.
Embedding profile avatars directly into user profile JSON objects.

Examples

1. Inlining a Logo for Email Templates

Web Developer
Background
The developer needs to include a company logo in a transactional email template that does not support external image hosting.
Problem
The image must be embedded directly into the HTML code to ensure it displays correctly in all email clients.
How to Use
Upload the logo file, ensure 'Include Data URI Prefix' is checked, and click convert.
Example Config
Include Data URI Prefix: true
Outcome
A complete Base64 string ready to be pasted into an <img src='...'> tag.

2. Optimizing Icons for CSS

Frontend Designer
Background
A designer wants to reduce the number of server requests for a landing page by inlining small UI icons.
Problem
The icons are too large and need to be resized to fit the design system before being converted.
How to Use
Upload the icon, set the Max Width to 32px, and convert to Base64.
Example Config
Max Width: 32, Include Data URI Prefix: true
Outcome
A compact Base64 string that can be used as a background-image in CSS, reducing page load time.

Try with Samples

image, png, jpg
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Windows Image Processing C++ Samples
Windows C++ image processing examples including reading/saving images, resizing, and format conversion using Windows Imaging Component (WIC)
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Web Image Processing Rust Samples
Web Rust image processing examples including image read/save, scaling, and format conversion
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macOS Image Processing Objective-C Samples
macOS Objective-C image processing examples including image reading/saving, image scaling, and format conversion
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FAQ

What image formats are supported?

The tool supports JPEG, PNG, WebP, and GIF formats.

What is the 'Include Data URI Prefix' option?

When enabled, it adds the 'data:image/...;base64,' header to your string, which is required for direct use in HTML 'src' attributes or CSS 'url()' properties.

Is there a file size limit?

Yes, the tool supports files up to 10MB.

Can I resize the image during conversion?

Yes, you can specify a maximum width or height in pixels to scale the image before encoding.

Is my image data stored on your server?

No, all processing is performed locally in your browser to ensure your data remains private.

API Documentation

Request Endpoint

POST /en/api/tools/image-to-base64

Request Parameters

Parameter Name Type Required Description
imageFile file (Upload required) Yes -
outputFormat select Yes -
includeDataUri checkbox No -
maxWidth number No -
maxHeight number No -

File type parameters need to be uploaded first via POST /upload/image-to-base64 to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}
Text: Text

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-image-to-base64": {
      "name": "image-to-base64",
      "description": "Convert images to Base64 encoding with support for various formats and quality settings",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=image-to-base64",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]