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Image Format Converter
Batch-convert up to 20 images between JPG, PNG and WebP. Adjust quality and background color for transparent-to-opaque conversions. Uses Canvas locally.
100% Private & Secure
This tool runs in your browser.
Your data is never uploaded or stored.
Drop images here or click to upload
JPG, PNG, WebP, GIF, BMP — up to 20 images, max 20 MB each
How to use
- 1
Upload images (up to 20).
- 2
Choose output format and quality.
- 3
Download converted images.
Frequently Asked Questions
What happens to transparency when converting PNG to JPG?
Transparent areas are filled with white (or your chosen background color).
Is there a file size limit?
No strict limit, but very large images may be slow in the browser.
Related reading
Jul 11, 2026
Choosing an Image Format: WebP vs AVIF vs PNG vs JPG
A practical comparison of PNG, JPG, WebP and AVIF: when to use each, lossless vs lossy trade-offs, alpha transparency, animation, and current browser support.
Jun 23, 2026
Image optimization for the web: a practical guide
Formats, compression, responsive images, and lazy loading — the levers that move Core Web Vitals and cut page weight.