Convert JPG, PNG, and WebP in Your Browser Convert images between JPG, PNG, and WebP formats with quality control.

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Image Format Converter

Convert images between JPG, PNG, and WebP formats with quality control.

Upload Your Image

Drop or select any image file (JPG, PNG, WebP, BMP, etc.).

Choose Output Format

Select your desired format: PNG (lossless), JPG (lossy, small), or WebP (modern, best compression).

Convert and Download

Click Convert, preview the result, and download in your chosen format.

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What Is Image Format Converter?

An image format converter transforms images from one file format to another. Different image formats have different strengths: PNG offers lossless quality with transparency support, JPEG provides excellent compression for photographs, and WebP delivers superior compression and optional transparency. This tool lets you convert between all three formats with a visual quality control for lossy formats. When converting to JPEG, transparent areas are automatically filled with white since JPEG does not support transparency. All conversion happens in your browser using the Canvas API.

Why Use Image Format Converter?

Convert between PNG, JPG, and WebP with one click
Quality slider for fine-grained control on lossy formats
Automatic handling of transparency when converting to JPEG
Clear format descriptions help you choose the right one

Common Use Cases

Web Optimization

Convert PNGs to WebP for 30-50% smaller file sizes while maintaining quality.

Compatibility

Convert WebP images to JPG or PNG for use with software that does not support WebP.

Transparency Needs

Convert JPG images to PNG when you need to add transparency later.

Social Media Requirements

Convert to formats accepted by specific platforms.

Technical Guide

Format conversion uses the Canvas API to decode the source image and re-encode it in the target format. The image is drawn to a canvas element, then exported using canvas.toDataURL() with the target MIME type. For JPEG output, the canvas is pre-filled with white to replace transparent areas. PNG encoding is always lossless. JPEG and WebP accept a quality float between 0.0 and 1.0 that controls compression level.

Tips & Best Practices

1
Use PNG for images with text, logos, or transparency needs
2
Use JPEG for photographs and images with smooth gradients
3
Use WebP for the best compression — ideal for web use
4
When converting to JPEG, transparent areas become white

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Frequently Asked Questions

Q Which format is best for web use?

WebP offers the best compression for web. Use PNG for images needing transparency, and JPEG for wide compatibility.

Q Will conversion affect quality?

Converting to PNG is lossless. Converting to JPEG/WebP may lose some quality depending on the quality setting.

Q What about transparency?

PNG and WebP support transparency. When converting to JPEG, transparent areas are filled with white.

Q Can I convert GIF to other formats?

Yes, but only the first frame of animated GIFs will be converted.

Q What is the maximum file size?

The limit depends on your browser memory. Most modern browsers handle images up to 50MB.

About This Tool

Image Format Converter is a free online tool by FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration or installation required.