メール添付向け画像をオンライン圧縮 - Pic Compress

画像圧縮は、許容できる視覚品質を維持しながらファイルサイズを削減します。

JPG/JPEG、PNG、WebP、GIF、SVG、AVIFに対応しています。

圧縮により画質が低下する可能性がありますが、品質レベルを制御できます。

Web用途には通常70-85%の品質が適しています。

ファイルは完全に安全です。すべての圧縮はブラウザ内でローカルに行われます。

はい！すべての最新ブラウザで動作します。

非可逆圧縮は一部の画像データを削除してファイルサイズを削減します。

Yes! You can upload and compress up to 20 images simultaneously. Our tool processes all images in parallel for maximum efficiency.

Our tool works on all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. We recommend using the latest browser version for best performance.

No installation required. Our tool runs entirely in your browser. Simply visit the website and start compressing images immediately.

Yes! Our tool is fully responsive and works on smartphones, tablets, and desktop computers. The interface adapts to your screen size.

If compression fails, try refreshing the page and uploading the image again. Ensure your browser is up to date and the file is not corrupted.

Yes! Our tool allows you to convert images between different formats during compression. For example, you can convert PNG to JPG or WebP.

Choose target size based on your use case: 10-50KB for thumbnails and icons, 50-100KB for email attachments, 100-200KB for web images, 200-500KB for high-quality photos.

There is no daily limit on the number of images you can compress. You can process up to 20 images per batch, and you can run as many batches as needed.

No. All processing happens locally in your browser. We never store, upload, or access your images. Your files remain completely private.

Yes! You can use compressed images for any purpose, including commercial projects. Our tool is free to use without restrictions.

This can happen with very small images or images with simple content. In these cases, the compression overhead may result in minimal size reduction.

For best results: resize images before compression, choose appropriate quality settings (70-85% for web), use target size feature for specific requirements, and consider converting to WebP or AVIF formats.