SellstampJPG to PNG
Convert JPG photos to lossless PNG in your browser, one or many at a time. Nothing is uploaded.
Converted to lossless PNG in this tab. Never uploaded.
Your file stays on your device
Your browser opens and processes the file itself. It is never uploaded, to Sellstamp or anyone else, and nothing is kept after you close the page.
Selling images?
Photos, templates, presets or artwork: Sellstamp gives them a storefront and delivers the files automatically after payment. Open a free store
How to use it
- Choose or drop your JPG images.
- Press Convert.
- Download each PNG, or all of them as a zip.
Your images are not uploaded
Your browser opens the image, does the work in this tab, and saves the result back to your device. Nothing is sent to Sellstamp or anyone else, so there is no upload to wait for and no copy on a server afterwards.
JPG, PNG and WebP in one paragraph
JPG is small for photos but lossy and has no transparency. PNG is lossless and keeps transparency, which suits logos, screenshots and graphics, but photos come out large. WebP does both: lossy or lossless, with transparency, usually smaller than either, and every current browser reads it. Turning a JPG into a PNG does not restore detail the JPG threw away; it only stops more being lost.
Why the PNG is bigger
PNG stores every pixel exactly, while JPG keeps a compressed approximation. The PNG of a photo is therefore usually several times larger than the JPG it came from, without looking any better. Convert to PNG when a program needs PNG, or before editing an image you will save many times, so it does not lose quality on every save.
Questions
Does converting JPG to PNG improve quality?
No. Detail the JPG discarded cannot come back. The PNG keeps the image exactly as it is now, so it loses nothing more.
Can PNG make my JPG transparent?
Not by itself: the PNG keeps the JPG’s background. Use the background remover to cut out the subject.
Why is my PNG so large?
PNG is lossless, and photos have a lot of detail to store. That is normal.
Is the EXIF data kept?
No. The image is redrawn, so camera details and location are not copied.
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