画像をWebPに変換 — 無料オンラインWebPコンバーター
WebPはJPEGやPNGより小さく、同じ画質を保つモダンな画像フォーマットです。ブラウザ内で画像をWebPに変換 — アップロード不要、登録不要、完全プライベート。ファイルをドロップして最適化されたWebPを即ダウンロード。
Why use this image to webp tool?
Frequently Asked Questions
How do I convert an image to WebP?
Drag and drop your image onto the converter above, or click to browse. Your image is converted to WebP instantly in your browser. Adjust the quality slider if needed, then download the WebP file. No upload or signup required.
Is converting to WebP free?
Yes, completely free. There are no watermarks, no signup, no file limits, and no hidden costs. All processing happens locally in your browser.
Does WebP reduce file size?
Yes. WebP typically produces files 25–35% smaller than JPEG and significantly smaller than PNG at equivalent visual quality, which improves page load speed and SEO.
Is it safe to convert images to WebP online?
It is completely safe because your images never leave your device. All conversion happens locally in your browser using the Canvas API — nothing is uploaded to any server.
Which formats can I convert to WebP?
You can convert JPEG, PNG, AVIF, BMP and GIF to WebP. Simply drop your file and the tool outputs a WebP image automatically.