JPGをドロップ。 PNGを取得。

または クリックしてJPGファイルを選択

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アップロードなし。追跡なし。

Why Convert JPG to PNG?

Lossless Quality

PNG uses lossless compression, so every pixel is preserved exactly. Perfect for editing, archiving, or further processing without compounding JPG artifacts.

100% Private

Your files never leave your device. Everything is processed directly in your browser — no server, no cloud storage, nothing transmitted.

Add Transparency Later

PNG supports transparency. Converting JPG to PNG gives you a format you can edit in many tools to remove backgrounds or add alpha channels.

よくある質問

Yes — conversion happens entirely inside your browser. Your images are never uploaded to any server. Nothing is stored or transmitted.

Yes! Drop multiple JPG or JPEG files at once — they'll all be converted in one go. Download them individually or as a single ZIP archive.

Yes — converting from JPG to PNG is lossless. The PNG will look identical to the source JPG. Note: existing JPG compression artifacts won't be removed by conversion.

No — your image will keep its existing background. PNG simply supports transparency as a feature, so you can later edit the converted PNG to remove the background or add alpha.

Usually yes — PNG is lossless and JPG is lossy, so PNG files are typically 2–5× larger for photos. Use PNG when you need quality, JPG when you need smaller files.

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