Free Online Image Converter - PNG, JPG, WebP
Convert between PNG, JPG, and WebP in your browser - batch supported
使い方
- 1Drop images
Drag one or many source files into the drop zone.
- 2Pick target format
JPG, PNG, or WebP. Adjust quality for the lossy formats.
- 3Download
Grab each converted file, or download all in one go.
Free Online Image Converter - PNG, JPG, WebP について
Free online image format converter. Convert PNG to JPG, JPG to PNG, PNG or JPG to WebP, and back - one image or a batch at once. Adjust quality for lossy targets and preserve transparency where the target format allows. Runs entirely in your browser - no uploads. 712 Tools の Free Online Image Converter - PNG, JPG, WebP はモダンな JavaScript API を使って完全にブラウザ内で動作します - サーバーがあなたのデータを見ることは一切ありません。つまり、即時の結果、完全なプライバシー、アップロード制限なしです。
デバッグ、簡単な確認、あるいは本番のインシデント対応まで - このツールは何度でも無料で使えます。ウォーターマークなし、サインアップなし、ツール内広告なし。
よくある質問
Which conversion preserves transparency?
PNG and WebP preserve alpha. JPG does not - a transparent background becomes solid (white by default; pick a color in the tool).
Is my image uploaded?
Never. Conversion uses the browser Canvas API and stays entirely on your device.
What quality should I use for JPG or WebP?
75–85 is the standard sweet spot. Above 90 the file grows quickly for barely-visible quality gains.
How is this different from the image compressor?
Same underlying engine - this one is focused on format changes and batches; the compressor is focused on shrinking file size with quality tuning.
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