Image Format Converter

JPG, PNG and WebP each have a job. JPG is the universal photo format: small, lossy, no transparency. PNG is lossless and supports transparency, at the cost of size. WebP is the modern middle ground — smaller than both, with transparency support — but not yet accepted everywhere.

This converter moves images between all three in any direction. Add a mixed batch, choose one output format, and every image is decoded and re-encoded by your browser. A quality slider controls lossy output, and a checkbox decides whether transparent regions are flattened onto white (required for JPG, optional for the others).

It replaces the guesswork of “which format does this site want” with a single drop zone — and because nothing is uploaded, it works even on images you would rather keep private.

Input: JPG, PNG and WebP images — up to 40 MB each, 30 per batch.

Output: your choice of JPG, PNG or WebP for the whole batch.

• Quality slider applies to JPG and WebP; PNG output is always lossless.
• Optional white fill for transparent areas (always applied for JPG output).
• Pixel dimensions are preserved — conversion changes encoding, not size.

• Format requirements — meet whatever a form, CMS or marketplace demands without hunting for a per-format tool.
• WebP for your website — convert JPG/PNG assets to WebP for faster pages.
• PNG for editing pipelines — move lossy sources into a lossless container before editing.
• JPG for maximum compatibility — when the recipient’s software is unknown, JPG always opens.

• Converting between lossy formats (JPG ⇄ WebP) introduces a small generation loss each time — convert from the best original you have, not from an already-converted copy.
• Transparency survives only in PNG and WebP output; JPG always flattens to a solid background.
• Converting to PNG will grow photographic images substantially — that is the honest cost of lossless storage.
• Animated images convert as a single still frame; animated WebP/GIF conversion is not supported.