AI Image Upscaler

High-quality image upscaling using advanced interpolation algorithms with sharpening enhancement

Click to upload file or drag and drop file here

Maximum file size: 50MB Supported formats: image/jpeg, image/png, image/webp, image/bmp, image/tiff

Supports JPG, PNG, WebP, BMP, TIFF and other common image formats

Select scale factor (2x is recommended for best quality and details)

Set to use this width instead of scale factor

Set to use this height instead of scale factor

Maintain the original image aspect ratio

Lanczos3 provides best quality, Nearest is fastest

0 1.5 5

Enhance image details, higher values create stronger sharpening effect

Slightly enhance color saturation and brightness

JPEG for photos, PNG for images with transparency

1 92 100

Output image quality (1-100), only for JPEG and WebP

Key Facts

Category
Images, Audio & Video
Input Types
file, select, number, checkbox, range
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

The AI Image Upscaler allows you to increase the resolution of your images using advanced interpolation algorithms like Lanczos3, combined with customizable sharpening and color enhancement. It supports common formats like JPG, PNG, WebP, BMP, and TIFF, enabling you to scale by factors up to 8x or define custom target dimensions while maintaining the original aspect ratio.

When to Use

  • •When you need to increase the resolution of low-resolution photos or graphics for print or high-definition displays.
  • •When you want to sharpen blurry details and enhance colors in compressed web images.
  • •When you need to resize images to specific target widths or heights without losing quality or distorting the aspect ratio.

How It Works

  • •Upload your image file in JPG, PNG, WebP, BMP, or TIFF format.
  • •Select a scale factor from 1.5x to 8x, or specify custom target dimensions.
  • •Choose your preferred interpolation method, adjust the sharpening level, and toggle color enhancement.
  • •Select the output format and quality, then process the image to download the upscaled file.

Use Cases

Upscaling legacy digital photos to print-ready resolutions.
Enhancing web graphics and screenshots for high-density Retina displays.
Preparing low-resolution product images for e-commerce platforms.

Examples

1. Preparing Low-Res Product Photos for Print

E-commerce Designer
Background
A designer needs to print marketing banners using product photos that are only 800x600 pixels.
Problem
The images look pixelated and blurry when stretched to print dimensions.
How to Use
Upload the product JPEG, select a 4x scale factor, set the interpolation to Lanczos3, adjust the sharpening amount to 2.0, and set the output format to PNG for lossless quality.
Example Config
Scale: 4x, Interpolation: Lanczos3, Sharpen Amount: 2.0, Output Format: PNG
Outcome
The image is upscaled to 3200x2400 pixels with sharp edges and enhanced details, suitable for high-quality printing.

2. Enhancing Compressed Web Graphics

Web Developer
Background
A developer wants to optimize a blurry screenshot for a blog post.
Problem
The original screenshot is small, blurry, and has dull colors due to compression.
How to Use
Upload the screenshot, set a target width of 1920 pixels, check 'Maintain Aspect Ratio', enable 'Color Enhancement', set the sharpening amount to 1.5, and export as WebP at 90% quality.
Example Config
Target Width: 1920, Maintain Aspect Ratio: True, Color Enhancement: True, Sharpen Amount: 1.5, Output Format: WebP, Quality: 90
Outcome
The screenshot is resized to 1920px wide with vibrant colors, sharp text, and a modern WebP format optimized for fast web loading.

Try with Samples

image, png, jpg
Web Image Processing Go Samples
Web Go image processing examples including image reading/saving, image resizing, and format conversion
title token image
image
Web Image Processing Python Samples
Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion
title token image
image
Web Image Processing Rust Samples
Web Rust image processing examples including image read/save, scaling, and format conversion
title token image
image
Windows Image Processing C++ Samples
Windows C++ image processing examples including reading/saving images, resizing, and format conversion using Windows Imaging Component (WIC)
title token image
image

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FAQ

What image formats are supported?

You can upload JPG, PNG, WebP, BMP, and TIFF files up to 50MB.

Which interpolation method should I choose?

Lanczos3 is recommended for the highest quality results, while Nearest is the fastest option.

Can I set a specific width and height instead of a scale factor?

Yes, you can enter custom target width and height values and choose whether to maintain the original aspect ratio.

What does the sharpening option do?

The sharpening amount slider enhances fine details and edges in the upscaled image, with values ranging from 0 to 5.

Which output formats can I download?

You can export your upscaled image as JPEG, PNG, or WebP.

API Documentation

Request Endpoint

POST /en/api/tools/image-quality-upscaler

Request Parameters

Parameter Name Type Required Description
imageFile file (Upload required) Yes Supports JPG, PNG, WebP, BMP, TIFF and other common image formats
scale select No Select scale factor (2x is recommended for best quality and details)
targetWidth number No Set to use this width instead of scale factor
targetHeight number No Set to use this height instead of scale factor
maintainAspectRatio checkbox No Maintain the original image aspect ratio
interpolation select No Lanczos3 provides best quality, Nearest is fastest
sharpenAmount range No Enhance image details, higher values create stronger sharpening effect
enhanceColors checkbox No Slightly enhance color saturation and brightness
outputFormat select No JPEG for photos, PNG for images with transparency
quality range No Output image quality (1-100), only for JPEG and WebP

File type parameters need to be uploaded first via POST /upload/image-quality-upscaler 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-quality-upscaler": {
      "name": "image-quality-upscaler",
      "description": "High-quality image upscaling using advanced interpolation algorithms with sharpening enhancement",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=image-quality-upscaler",
      "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]