Image Converter — JPG, PNG, WebP, AVIF & More
Convert between JPG, PNG, WebP, AVIF, HEIC, and more instantly. Batch processing, instant download — free, no sign-up.
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Frequently Asked Questions
What image formats can I convert?
LeanImg reads JPG, PNG, WebP, AVIF, HEIC, SVG, TIFF, BMP, GIF, and ICO images, and converts them to JPG, PNG, WebP, AVIF, or PDF — for example, PNG to JPG, HEIC to WebP, or JPG to AVIF. All conversions happen instantly in high quality.
Is it free to convert images?
Yes, completely free. There is no sign-up, no watermark, no per-file fees, and no monthly quota — up to 10 images per batch, 50 MB in total, and as many batches as you need. The tool runs in your browser so there are no server costs to pass on to users.
Is it safe to convert images online?
Yes. LeanImg processes images entirely in your browser. Your files are never uploaded to any server, never stored anywhere, and never accessible to anyone else. It is as private as editing images on your own computer. Close the tab and all data is gone.
Can I convert multiple images at once?
Yes. Drop up to 10 images at a time and they will all be converted automatically. Once done, download them individually or all at once as a ZIP file. Batch conversion runs locally in your browser with no upload required.
What is the best image format for websites?
WebP and AVIF offer the best compression for web use. WebP is broadly supported and 25–35% smaller than JPG. AVIF is even more efficient at about 50% smaller. For maximum compatibility, JPG and PNG remain universal. Choose based on your browser support needs.