JPG to PNG Converter
Convert JPEG photos to lossless PNG in your browser.
About this tool
JPEG uses lossy compression tuned for photographs. It has no transparency, and every re-save degrades the image slightly, so it is best as a final output format rather than a working one.
PNG is lossless and supports transparency, which makes it the right choice for logos, screenshots and anything with sharp edges or flat colour. Files are larger than JPEG for photographs.
How to use it
- Choose an image, or drag one onto the box.
- Adjust the options if you need to — the preview updates immediately.
- Press Download to save the result.
Nothing is uploaded; the conversion happens on your own machine.
Frequently asked questions
Is my image uploaded anywhere?
No. The image is decoded and re-encoded entirely in your browser using a canvas. It never leaves your device, is never sent to a server, and nothing is stored.
Will the quality drop?
Converting to PNG, BMP or WebP lossless keeps every pixel. Converting to JPEG is lossy by definition, so the quality slider controls the trade-off between file size and fidelity.
Why did my photo come out the right way up?
Photographs from phones store an EXIF orientation tag rather than rotating the pixels. This tool reads that tag and applies the rotation, so the result matches what you saw in your gallery.
Is there a size limit?
Very large images are scaled to stay within the browser canvas limit — around 16.7 million pixels on iOS — because exceeding it silently produces a blank image. The aspect ratio is preserved when that happens.