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Image Canvas Extender

Basic image canvas extension tool for adding space around images with various fill strategies

Click to upload file or drag and drop file here

Maximum file size: 20MB Supported formats: image/jpeg, image/png, image/webp, image/tiff, image/gif, image/bmp

Upload any image file (JPEG, PNG, WebP, TIFF, GIF, BMP)

Choose how to extend the image canvas

Choose how to fill the extended area

Background color for the extended area (default: white)

Padding to add on all sides when using uniform mode

Padding to add to the top edge

Padding to add to the right edge

Padding to add to the bottom edge

Padding to add to the left edge

Choose output format or keep original

Output quality for lossy formats (JPEG, WebP). Higher = better quality but larger file size

Key Facts

Category
Media
Input Types
file, select, color, number
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

The Image Canvas Extender is a straightforward utility designed to add extra space around your images. Whether you need to create uniform padding for social media layouts or add specific margins for professional design work, this tool allows you to expand your canvas using solid colors, edge mirroring, or pattern repetition.

When to Use

  • •Adding consistent padding to images for web design or social media thumbnails.
  • •Creating extra space around an image to accommodate text or branding elements.
  • •Adjusting image dimensions to meet specific aspect ratio requirements without cropping.

How It Works

  • •Upload your image file (JPEG, PNG, WebP, etc.) to the tool.
  • •Select your preferred extension mode, choosing between uniform padding or custom dimensions for each side.
  • •Pick an extension method, such as a solid background color, edge mirroring, or pattern repetition.
  • •Adjust the output format and quality settings, then process the image to download your expanded file.

Use Cases

Preparing product photos with uniform white borders for e-commerce listings.
Extending the background of a portrait photo to fit a specific banner aspect ratio.
Adding padding to images to prevent them from being cropped by social media profile picture frames.

Examples

1. Standardizing E-commerce Product Images

E-commerce Store Owner
Background
Product photos have varying aspect ratios, making the storefront look disorganized.
Problem
Need to add uniform white padding to make all images square without losing content.
How to Use
Upload the product image, select 'Uniform Padding', set the padding to 100px, and choose 'Solid Color Background' set to white.
Outcome
All product images are converted to a uniform square size with a clean white border, creating a professional and consistent gallery layout.

2. Creating Background Space for Banners

Graphic Designer
Background
A high-quality portrait photo is too tight to fit into a wide website header.
Problem
Need to extend the canvas horizontally to fit the banner without stretching the subject.
How to Use
Upload the portrait, select 'Individual Sides', set 'Left Padding' and 'Right Padding' to 200px, and use the 'Mirror Edges' method.
Outcome
The image canvas is extended on both sides using mirrored edge pixels, providing enough space to fit the header while keeping the subject centered.

Try with Samples

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FAQ

What file formats are supported?

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

Can I add different amounts of padding to each side?

Yes, select the 'Individual Sides' mode to specify unique pixel values for the top, right, bottom, and left edges.

How does the 'Mirror Edges' method work?

The 'Mirror Edges' method reflects the pixels at the edge of your image into the new canvas area, creating a seamless, natural-looking extension.

Is there a limit to the image file size?

Yes, the maximum file size for uploads is 20 MB.

Can I change the file format during extension?

Yes, you can choose to keep the original format or convert the output to JPEG, PNG, or WebP.

API Documentation

Request Endpoint

POST /en/api/tools/image-extend

Request Parameters

Parameter Name Type Required Description
imageFile file (Upload required) Yes Upload any image file (JPEG, PNG, WebP, TIFF, GIF, BMP)
extendMode select Yes Choose how to extend the image canvas
extendWith select Yes Choose how to fill the extended area
backgroundColor color No Background color for the extended area (default: white)
uniformPadding number No Padding to add on all sides when using uniform mode
topPadding number No Padding to add to the top edge
rightPadding number No Padding to add to the right edge
bottomPadding number No Padding to add to the bottom edge
leftPadding number No Padding to add to the left edge
format select No Choose output format or keep original
quality number No Output quality for lossy formats (JPEG, WebP). Higher = better quality but larger file size

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

Response Format

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
File: File

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-image-extend": {
      "name": "image-extend",
      "description": "Basic image canvas extension tool for adding space around images with various fill strategies",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=image-extend",
      "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]