PNG is a practical choice when you want to keep the source assets familiar. PNG is a lossless raster format built for crisp edges, transparency and UI artwork. It is a dependable choice for logos, screenshots and graphics that need exact pixel fidelity, even when the file is a little heavier. JPEG brings a different balance of size, compatibility or flexibility. JPEG is the classic photographic format for the web. It uses lossy compression to keep files small while preserving smooth color transitions, which makes it ideal for camera photos, product shots and other imagery with many gradients.
Use Local Optimizer to convert PNG to JPEG locally, without uploading the file anywhere. The converter below works well for one-off jobs and batch workflows alike.
Unlike classic online tools, Local Optimizer processes your files directly in your browser using the HTML5 Canvas API. Your images are never uploaded to a server: that means total privacy and maximum speed, since processing does not depend on your internet connection. You can even use the tool offline once the page has loaded.