Format Converter

Convert between JPG, PNG, WebP, AVIF.

Drop images here or click to upload

JPG, PNG, WebP · up to 50 images · 0/50 selected

Multi-format

Convert between JPG, PNG, WebP, AVIF.

Batch Convert

Convert multiple images at once.

ZIP Download

Download all converted files as ZIP.

Client-side

All processing in your browser. No data uploaded.

About Format Converter

The Image Converter transforms your images between the most common web formats — JPEG, PNG, and WebP — entirely inside your browser. Different image formats suit different use cases: JPEG is ideal for photographs where small file size matters; PNG is best for graphics, logos, and images that need a transparent background; WebP is a modern format that delivers superior compression for both photographs and graphics and is supported by all major browsers. Converting between these formats is often necessary when a CMS or design tool only accepts one specific type, or when you want to optimise images for web delivery. This tool supports batch conversion of up to 50 images simultaneously, with a configurable quality slider for lossy formats. The output is ready to download immediately — individually or as a ZIP archive. Because processing runs client-side, conversion is instant and your files stay completely private.

How to Use Format Converter

  1. Drag and drop your images onto the upload zone, or click to browse — up to 50 files accepted at once.
  2. Choose the output format by clicking one of the format buttons: JPG, PNG, or WebP.
  3. For JPG and WebP, adjust the Quality slider to balance file size against visual fidelity.
  4. Conversion starts automatically. The new file size is displayed next to each image once ready.
  5. Click "Download" next to a single file to save it, or "Download all" to get a ZIP of all converted images.
  6. Switch between output formats at any time — all images will re-convert to the newly selected format.

Frequently Asked Questions

Which format should I choose for my website?

WebP is the best choice for modern websites — it produces smaller files than both JPEG and PNG while maintaining quality. Use PNG when you need transparency, and JPEG for maximum compatibility with older systems.

Will converting PNG to JPEG remove the transparent background?

Yes. JPEG does not support transparency; transparent areas will be filled with white. Use WebP or keep the PNG format if you need to preserve alpha channels.

Does the quality slider affect PNG output?

No. PNG is a lossless format, so the quality slider is hidden when PNG is selected. The file will always be saved at full quality.

Are my images uploaded anywhere?

No. Conversion uses the browser's Canvas API entirely on your device. No data is sent to any server.

Can I convert animated GIFs?

The tool converts only the first frame of animated images. For animated GIF conversion, a dedicated animation tool is recommended.

Free Online Image Converter: Convert JPG, PNG, WebP, AVIF Instantly

Fast, secure, batch image format conversion with transparency preservation

The Challenge & The Solution

PNG images are often excessively large, JPG lacks transparency support, and next-gen WebP/AVIF formats are essential for SEO but tricky to convert with legacy software.

Metoolzy Image Converter enables effortless multi-format conversion between JPG, PNG, WebP, and AVIF right in your browser with zero latency and full transparency retention.

Key Features of Format Converter

  • Multi-Format Conversions: Seamlessly convert between JPG, PNG, WebP, and AVIF.
  • Alpha Channel Preservation: Maintain perfect transparency when converting between PNG and WebP.
  • Batch Processing: Convert dozens of images at once and download as a ZIP file.
  • 100% Client-Side Privacy: Zero server uploads guaranteed.

Step-by-Step Guide

  1. Select or drop your source images.
  2. Choose your target format (PNG, JPG, WebP, AVIF).
  3. Click Convert and download your converted files.

Feature Comparison

Format Transparency Compression Efficiency Browser Support
WebP Yes High (30% smaller than JPG) 97%+ of all browsers
AVIF Yes Ultra-high (20% smaller than WebP) 92%+ of all browsers
PNG Yes Lossless (Larger file size) 100% universal support
JPG No Good lossy compression 100% universal support

Practical Real-World Use Cases

  • Web developers migrating image libraries to WebP for Google PageSpeed
  • Converting downloaded WebP files to JPG for office presentations
  • Batch asset preparation for e-commerce stores

Frequently Asked Questions (FAQ)

How do I maintain transparency when converting?

Always choose PNG or WebP as the destination format to retain transparency.