PNGをJPGへ
PNGをJPGに変換 — 無料オンラインPNG to JPEG
大きなPNGファイルはサイトを遅くします。PNGをJPGに変換してファイルサイズを大幅に削減 — 透明度が不要な写真に最適。完全にブラウザ内、アップロード・登録不要。
Why use this png to jpg tool?
Convert PNG to JPG/JPEG with one click
Up to 80% smaller files than PNG for photos
Batch convert multiple PNGs at once
Quality slider for optimal size/quality
100% local processing — fully private
Free, no watermark, no signup
Frequently Asked Questions
How do I convert PNG to JPG?
Drop your PNG onto the converter or click to browse. It is converted to JPG instantly in your browser. Adjust quality if needed, then download.
Does converting PNG to JPG remove transparency?
Yes. JPG does not support transparency, so transparent areas become filled (white by default). Keep PNG if you need transparency.
How much smaller is JPG than PNG?
For photographic content, JPG is often 70–90% smaller than PNG while retaining excellent visual quality.
Is PNG to JPG conversion free?
Yes, completely free with no watermark or signup. All processing happens locally in your browser.