JPG to PNG Converter

This free JPG to PNG converter turns JPEG photos into lossless PNG images right in your browser. PNG is ideal when you need a lossless copy or plan to edit the image further without JPEG's generation loss. Drop one JPG or a whole batch, then download each PNG or grab them all in a single ZIP — your files are processed entirely on your device and never uploaded to a server.

Beyond a plain one-to-one conversion, this tool converts many images at once, previews each result on a transparency checkerboard, and reports the exact pixel dimensions plus the size change from source to PNG. Optionally resize while you convert — scale everything by a percentage or fit each image inside a maximum width and height (aspect ratio preserved) — and choose a flat background color to fill any transparent or padded areas. Accepts.jpg, .jpeg,.jfif and progressive JPEGs. Every conversion runs offline through the browser's canvas, so it works without a network connection and nothing leaves your device.