Image Format Converter Online Tool

Convert JPG images to PNG (lossless) or JPEG (with quality control) instantly with our free online tool. Supports live preview and secure processing.

Upload JPG Image

Drag & drop JPG image here or click to browse

Supports JPG, JPEG (max 10MB)

filename.jpg
0 KB

Converted Image Preview

Smaller file Better quality
Converted image preview
PNG 0 KB Size: --

Converted image will appear here

How to Use This JPG to PNG Converter Tool

Converting JPG to PNG

  1. Upload your JPG image using either:
    • Drag and drop into the upload area
    • Click to browse your files
  2. Verify image details (name, size, type)
  3. Click "Convert JPG to PNG" button
  4. View the converted PNG
    • Preview appears automatically
    • Check file size and format
  5. Download the PNG file using the download button

Understanding JPG vs PNG

JPG
Lossy compression, smaller file size, good for photos
PNG
Lossless compression, larger file size, supports transparency
  • When to convert: When you need transparency, better quality, or PNG format
  • Note: Converting JPG to PNG doesn't recover lost quality, but preserves current quality

Key Technical Details

Conversion Process

  • Client-side processing: All conversion happens in your browser
  • Canvas API: Uses HTML5 Canvas for image processing
  • No quality loss: Preserves existing image quality
  • Format support: JPG/JPEG input, PNG output

Supported Formats & Limits

  • Input formats: JPG, JPEG
  • Output format: PNG
  • Max file size: 10MB
  • Processing: 100% browser-based, no server upload

Format Options

Choose the output format that best suits your needs:

  • PNG: Lossless compression - preserves all image quality but typically larger files (2-4x the JPG size)
  • JPEG: Lossy compression with quality control - smaller files with adjustable quality (10-100%)

Important Notes

  • Quality preservation: Converting JPG to PNG doesn't restore lost quality from compression
  • Privacy: Images are processed locally - never uploaded to our servers
  • Browser compatibility: Requires modern browser with Canvas support

Frequently Asked Questions

Choose PNG when:

  • You need lossless quality preservation
  • You need transparency support
  • You're working with logos, graphics, or text-heavy images
  • File size is not a major concern

Choose JPEG when:

  • You want smaller file sizes
  • You can accept some quality loss
  • You need to optimize images for web delivery

The JPEG quality slider controls the compression level from 10% (maximum compression, smallest file) to 100% (minimum compression, best quality). Lower quality settings will produce smaller files but with more visible compression artifacts. Higher quality settings produce larger files with better image fidelity. The default 90% provides a good balance between size and quality for most use cases.

Yes, completely secure. All image processing happens directly in your browser using JavaScript and the HTML5 Canvas API. Your images are never uploaded to any server - the conversion is performed locally on your device.

PNG uses lossless compression, which preserves all image data without discarding information like JPG compression does. When you convert a highly compressed JPG to PNG, the file size can increase significantly (often 2-4x or more) because:

  • JPG compression permanently removes image data to achieve smaller files
  • PNG preserves all the original image information that was lost in JPG compression
  • Canvas processing expands the compressed JPG to full bitmap data before PNG encoding

This size increase is normal and expected when converting from lossy (JPG) to lossless (PNG) formats. If you want smaller files, try converting to JPEG with a lower quality setting instead.