Image Converter
Convert between JPG, PNG, WebP & AVIF — instant, free, private
Drop images here or click to browse (up to 10)
JPEG, PNG, WebP, AVIF up to 50MB each
How It Works
Drop Your Images
Drop up to 10 images at once, paste from clipboard, or click to browse. Krunkit detects each format automatically.
Choose Output Format
Select your target format from the settings panel. Adjust quality with the slider.
Download Converted Files
Download converted files individually, or grab all results as a single ZIP.
Which Format Should You Use?
JPEG (.jpg)
Best for photos with complex colors and gradients. No transparency support. Widely compatible with all devices and browsers. Typical savings: 60–80% vs. PNG.
PNG (.png)
Best for logos, screenshots, and images requiring transparency (alpha channel). Lossless compression preserves every pixel. Larger file sizes than JPEG for photos.
WebP (.webp)
Google's modern format. ~30% smaller than JPEG at equivalent quality. Supports transparency like PNG. Ideal for web use. Supported by all modern browsers since 2020.
AVIF (.avif)
The newest and most efficient format. Up to 50% smaller than JPEG. Excellent HDR and wide color gamut support. Supported by Chrome 85+, Firefox 93+, Safari 16+.
Frequently Asked Questions
Does converting images reduce quality?
Converting from a lossless format (PNG) to a lossy one (JPEG, WebP, AVIF) will involve some quality tradeoff, which you control with the quality slider. Converting between two lossless formats or keeping the same format with quality 100 is lossless.
What happens when I convert a PNG with transparency to JPEG?
JPEG doesn't support transparency. Krunkit detects transparent images and lets you choose a background color (white, black, or custom) to flatten the alpha channel before converting.
Is WebP better than JPEG?
For web use, yes. WebP produces files 25–35% smaller than JPEG at the same visual quality, and also supports transparency. All modern browsers have supported WebP since 2020. Use JPEG only for maximum compatibility with very old software.
Should I use AVIF or WebP?
AVIF is newer and more efficient (typically 20–30% smaller than WebP), but has slightly less browser support. For maximum performance, use AVIF. For broad compatibility including older browsers, use WebP.
Can I convert multiple images at once?
Yes! Drop up to 10 images at once, or paste from your clipboard. All files are converted with the same output format and quality settings. Download individually or as a single ZIP.