ConvertDuck

Image Converter

Convert images (including HEIC) to JPG, PNG, WEBP, and more.

Select multiple images (JPG, PNG, HEIC) or drag & drop here.

No images selected.

Change Image Formats Without Uploading

Compatibility issues are frustrating, especially when legacy systems reject modern formats like HEIC or WebP. This tool solves that by converting files locally using your browser's Canvas API. Whether you're a designer needing a transparent PNG or an iPhone user needing a standard JPG for a government form, we handle the conversion instantly on your device.

How to Convert Images

1. Select Files

Drag and drop your images. We support common formats plus Apple's HEIC/HEIF files.

Pro Tip: You can convert a mix of different formats at the same time.

2. Choose Format

Select your target output. Use JPG for photos (white background added automatically) or PNG to keep transparency.

3. Download ZIP

Get your converted files instantly in a structured ZIP archive.

Built for Privacy and Speed

  • ✓ Zero-Upload Privacy

    Your photos never touch our servers. Conversion happens 100% inside your browser, making it safe for sensitive documents.

  • ✓ HEIC Support

    Native support for converting Apple's High Efficiency formats to universally compatible JPGs.

  • ✓ Smart Transparency

    When converting transparent images to JPG, we automatically apply a clean white background instead of rendering black artifacts.

  • ✓ Bulk Processing

    Convert dozens of images in one go and download them as a single convenient ZIP file.

Compatibility Specs

Inputs JPG, PNG, WebP, HEIC, HEIF, AVIF
Outputs JPG, PNG, WebP (Browser dependent)
Privacy 100% Client-side processing
Engine HTML5 Canvas + Wasm

Why convert locally?

Feature Local Converter Cloud Converter
Data Privacy Files stay on device Files uploaded to server
Large Files No strict limits Often limited to 5-10MB
Queue Time Instant start Wait for server slots

Common Questions

Q. How do you handle transparent backgrounds in JPGs? ▼
Since JPG doesn't support transparency, our engine automatically fills transparent areas with white, ensuring your images look clean.
Q. Can I convert iPhone HEIC photos on Windows? ▼
Yes! Our tool includes a specific library to decode HEIC files directly in the browser, so you don't need to install any plugins.
Q. Does this work offline? ▼
Yes, once the page is loaded, you can disconnect from the internet and continue converting files securely.
Q. Why use WebP instead of JPG? ▼
WebP typically offers 30% smaller file sizes with the same quality, making your website load faster.