Image Resize
🔒ブラウザ内処理
Resize JPG, PNG, and WebP images entirely in your browser. Files are never sent to any server.
ファイルをドラッグ&ドロップ
またはクリックしてファイルを選択
Supported: JPG, PNG, WebP / Up to 20 files / Max 50MB per file
Why this tool
Pixels or percent
Both modes supported.
Keep aspect
Resize while preserving the aspect ratio.
In-browser
Files are never sent to a server.
よくある質問
Are files really not uploaded?
Correct. Open DevTools (F12) → Network tab during processing. No upload occurs.
How many images at once?
Up to 20 images, max 50MB each.
Will quality drop?
High-quality bicubic interpolation is used. Downscaling looks great; large upscaling will be blurry.
Can I make social media sized images?
Yes. X (Twitter) icons (400×400), OG images (1200×630), and any custom size are supported.
Does it preserve aspect ratio?
Yes — enable "Keep aspect ratio" and only set width or height.
What happens to file size?
Downscaled images are smaller. Combine with the Image Compress tool for further reduction.