JPG to PNG Converter
Convert JPG images to PNG entirely in your browser — no upload, no sign-up. PNG is lossless and supports transparency, which keeps edges crisp — but files are larger.
Drop images here, or click to choose
JPG, PNG, WebP · batch supported · nothing is uploaded
No upload — and you can prove it
Everything runs on your device. Open your browser's Network tab while you work — you'll see no file leave your computer. You can even disconnect from the internet after this page loads and the tool keeps working.
How to convert JPG to PNG
- Drag & drop your JPG file(s) below (or click to choose). You can convert several at once.
- The output format is already set to PNG — no need to change it.
- Quality only affects JPG output, so this step is skipped for PNG.
- Download the converted PNG file, or all of them as a ZIP.
When to convert JPG to PNG
JPG-to-PNG conversion doesn't shrink a file — PNG is lossless, so it almost always produces a *larger* file than the JPG you started with. The real reason to convert is preparing a photo for further lossless editing (each PNG save preserves every pixel, so repeated edits don't compound compression artifacts) or because a tool downstream (a print workflow, a design app, an icon generator) specifically requires PNG input.
Real file-size examples
We ran two real images through this exact conversion and measured the result — a photograph and a flat, UI-style graphic (icons/screenshots behave differently from photos, so we show both):
1920×1080 photo (1920×1080)
406.9 KB → 5.03 MB (+1166% larger)
1600×900 flat/UI graphic (1600×900)
57.1 KB → 81.9 KB (+43% larger)
Frequently asked questions
- Is the JPG to PNG converter free?
- Yes — completely free, unlimited, and no sign-up.
- Do my files get uploaded?
- No. Conversion happens locally in your browser; your files never leave your device.
- Will I lose quality converting JPG to PNG?
- PNG is lossless, so converting won't add new compression artifacts — but the file will usually be larger, not smaller. Detail already lost in a lossy JPG source can't be restored.
- Does PNG support transparency?
- Yes, PNG preserves transparent backgrounds.