Batch Converter

The converter reads JPG, PNG, WebP, AVIF, GIF, BMP, ICO and SVG files. Each one is decoded by the browser and drawn to a canvas, then re-encoded in the target format. Animated GIFs are converted using their first frame only, since JPG, PNG and canvas-encoded WebP produce still images. SVG files are rasterized at their natural size, which turns scalable vector artwork into a fixed-size pixel image.

Choosing a format comes down to content and destination. JPG is universally compatible and efficient for photographs, but it has no transparency, so the tool asks for a background color to fill transparent areas, white by default for most uses. PNG is lossless and keeps transparency, ideal for logos, screenshots and graphics. WebP supports both lossy and transparent images and is typically 25–35% smaller than JPEG at similar visual quality. AVIF can be smaller still, often around half the size of JPEG, and is offered when your browser supports encoding it.

For lossy outputs, a single quality slider applies to the whole batch. Values around 80 are a sensible default for photos; lower values shrink files further but introduce blockiness and smeared detail, particularly in skies and skin. Because conversion happens in the browser, the only limit on batch size is your device’s memory. A few hundred typical photos is well within reach on a modern laptop, and the results come back as a single ZIP so you don’t have to click through hundreds of downloads.