Step-by-step instructions
- 1
Understand why you're converting (before you start)
Valid reasons to convert JPG to PNG: you need to add transparency (PNG supports alpha channel, JPG doesn't). You'll be editing and re-saving the image many times (PNG prevents generation loss). You're using it in a compositing workflow where lossless quality matters. NOT valid reasons: thinking PNG will be 'higher quality' than JPG (the JPG quality is already baked in — PNG can't recover lost data). Wanting a smaller file (PNG is larger than JPG).
Go to converter - 2
Open FormatDrop's JPG to PNG converter
Navigate to formatdrop.com/jpg-to-png. The converter decodes the JPG (decompressing it to raw pixel data) then re-encodes to lossless PNG. Your file stays in your browser — nothing is uploaded.
- 3
Upload your JPG
Drop your JPG file onto the converter. Single images or batches work. The converter processes each JPG, decompresses it, and produces a PNG that represents exactly what the JPG looked like — including any JPG compression artifacts that were already present.
- 4
Download the PNG
Download your PNG. Note the file size difference: PNG is typically 3–10× larger than the equivalent JPG. A 500 KB JPG photo may become a 3–5 MB PNG. This is expected and correct — PNG is storing the same image data without lossy compression.
Why convert JPG to PNG?
The most common misunderstanding about JPG-to-PNG conversion: people believe PNG is 'better quality' and that converting JPG to PNG improves the image. It doesn't — and can't. JPG's lossy compression permanently discards image data when the JPG is first saved. Converting to PNG captures the JPG's appearance exactly as-is, including any compression artifacts, in a lossless container. The result: same visual quality as the JPG, larger file size. The value of JPG-to-PNG conversion lies in: (1) preventing further quality degradation on future re-saves, and (2) enabling alpha channel transparency to be added. If you're going to apply significant edits and re-save multiple times — convert to PNG first, edit in PNG, then export as JPG only for the final sharing version.
Your files never leave your device
FormatDrop runs the conversion engine entirely inside your browser using WebAssembly. No file upload. No server. Nothing stored. You can verify this by opening DevTools → Network tab and watching: zero upload requests.
Frequently asked questions
Does JPG to PNG improve image quality?
Why is my PNG so much larger than the original JPG?
Can I add a transparent background to a JPG?
No account. No upload. Works in any browser.